Dr. Zhiqiang Gao Profile

Dr. Zhiqiang Gao

Assistant Professor at Yantai Institute of Coastal Zone Research

SPIE Involvement:

Author

Publications (143)

Proceedings Article | 18 September 2018 Paper

Estimating initial biomass of green tide algae in the South Yellow Sea with aid of UAV and S2A data

Zhiqiang Gao, Fuxiang Xu, Weitao Shang, Xiaopeng Jiang, Debin Song, Maosi Chen

Proceedings Volume 10767, 107670Y (2018) https://doi.org/10.1117/12.2318852

KEYWORDS: Unmanned aerial vehicles, Biological research, RGB color model, Vegetation, Satellites, Oceanography, Satellite imaging, Data modeling, Data analysis, Ecology

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Proceedings Article | 18 September 2018 Paper

Spatial-temporal distribution characteristics of chlorophyll-a in offshore waters of Yantai and Weihai based on GOCI data

Debin Song, Zhiqiang Gao, Jicai Ning, Weitao Shang, Xiaopeng Jiang, Maosi Chen

Proceedings Volume 10767, 1076717 (2018) https://doi.org/10.1117/12.2320184

KEYWORDS: Water, Ocean optics, Oceanography, Luminescence, Atmospheric corrections, Carbon monoxide, Remote sensing, Lithium, Meteorological satellites, Spatial resolution

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Proceedings Article | 18 September 2018 Paper

Analysis of land use changes and driving factors in Dongying urban area from 2005 to 2015

Baorong Liu, Qiuxian Wang, Zhiqiang Gao, Wei Gao, Maosi Chen

Proceedings Volume 10767, 107670R (2018) https://doi.org/10.1117/12.2320421

KEYWORDS: Analytical research, Remote sensing

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Proceedings Article | 18 September 2018 Paper

The extraction of wetland vegetation information based on UAV remote sensing images

Weitao Shang, Zhiqiang Gao, Xiaopeng Jiang, Maosi Chen

Proceedings Volume 10767, 1076711 (2018) https://doi.org/10.1117/12.2319152

KEYWORDS: Vegetation, Unmanned aerial vehicles, Remote sensing, Image classification, Image segmentation, Image processing, Software development, Statistical analysis, Visible radiation, Sensors

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Proceedings Article | 18 September 2018 Paper

Analysis on land use changes and their driving forces in Weihai City between 2005 and 2015

Hong Sun, Qiuxian Wang, Zhiqiang Gao, Wei Gao, Maosi Chen

Proceedings Volume 10767, 107670U (2018) https://doi.org/10.1117/12.2320880

KEYWORDS: Classification systems, Remote sensing, Visualization, Earth observing sensors, Landsat, Databases, Analytical research

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Proceedings Article | 18 September 2018 Paper

Study on the extraction method of tidal flat

Yuanyuan Zhang, Zhiqiang Gao, Maosi Chen

Proceedings Volume 10767, 107670M (2018) https://doi.org/10.1117/12.2319559

KEYWORDS: Data modeling, Image segmentation, Composites, Remote sensing, Data centers, Satellite imaging, Satellites, Roads, Spatial resolution

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Proceedings Article | 18 September 2018 Paper

Study on spatial distribution of aerosol optical depth and particulate matter using MODIS data

Jicai Ning, Zhiqiang Gao, Maosi Chen

Proceedings Volume 10767, 107670H (2018) https://doi.org/10.1117/12.2317719

KEYWORDS: Aerosols, MODIS, Atmospheric particles, Remote sensing, Ocean optics, Satellites, Atmospheric sciences, Climatology, Atmospheric optics, Atmospheric monitoring

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Proceedings Article | 18 September 2018 Paper

Monitoring of polluted water in coastal zone using unmanned aerial vehicle remote sensing

Xiaopeng Jiang, Zhiqiang Gao, Weitao Shang, Maosi Chen

Proceedings Volume 10767, 1076713 (2018) https://doi.org/10.1117/12.2319704

KEYWORDS: Unmanned aerial vehicles, Remote sensing, Environmental monitoring, Water contamination, Orthophoto maps

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Proceedings Article | 1 September 2017 Paper

Analysis of relationships between NDVI and land surface temperature in coastal area

Jicai Ning, Zhiqiang Gao, Maosi Chen

Proceedings Volume 10405, 104050K (2017) https://doi.org/10.1117/12.2271589

KEYWORDS: Vegetation, Image analysis, Landsat

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Proceedings Article | 1 September 2017 Paper

Remote sensing of the Yellow Sea green tide in 2014 based on GOCI

Debin Song, Zhiqiang Gao, Fuxiang Xu, Xiangyu Zheng, Jinquan Ai, Maosi Chen

Proceedings Volume 10405, 104050R (2017) https://doi.org/10.1117/12.2272518

KEYWORDS: Ecosystems, Geographic information systems, Oceanography

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Proceedings Article | 1 September 2017 Paper

Comparative study of waterline extraction method in Southern Jiangsu Province

Yuanyuan Zhang, Zhiqiang Gao, Maosi Chen

Proceedings Volume 10405, 104050L (2017) https://doi.org/10.1117/12.2271597

KEYWORDS: Satellite imaging, Earth observing sensors, Satellites, MODIS, Image processing

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Proceedings Article | 1 September 2017 Paper

Multi-resource data-based research on remote sensing monitoring over the green tide in the Yellow Sea

Zhiqiang Gao, Fuxiang Xu, Debin Song, Xiangyu Zheng, Maosi Chen

Proceedings Volume 10405, 104050N (2017) https://doi.org/10.1117/12.2271732

KEYWORDS: Remote sensing, Charge-coupled devices, Earth observing sensors, Geographic information systems, Information technology, Vegetation

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Proceedings Article | 1 September 2017 Paper

The extraction of coastal windbreak forest information based on UAV remote sensing images

Weitao Shang, Zhiqiang Gao, Xiaopeng Jiang, Maosi Chen

Proceedings Volume 10405, 104050Q (2017) https://doi.org/10.1117/12.2272373

KEYWORDS: Unmanned aerial vehicles, Remote sensing, Image segmentation, Sensors, Vegetation

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Proceedings Article | 1 September 2017 Paper

Mapping of green tide using true color aerial photographs taken from a unmanned aerial vehicle

Fuxiang Xu, Zhiqiang Gao, Xiaopeng Jiang, Jicai Ning, Xiangyu Zheng, Debin Song, Jinquan Ai, Maosi Chen

Proceedings Volume 10405, 104050M (2017) https://doi.org/10.1117/12.2271724

KEYWORDS: Vegetation, Environmental sensing, Remote sensing, UAV imaging systems

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Proceedings Article | 1 September 2017 Paper

Estimating reclamation-induced carbon loss in coastal wetlands using time series GF-1 WVF data: a case study in the Yangtze Estuary

Jinquan Ai, Zhiqiang Gao, Chao Zhang, Wei Gao, Runhe Shi, Debin Song, Fuxiang Xu, Maosi Chen

Proceedings Volume 10405, 104050H (2017) https://doi.org/10.1117/12.2270695

KEYWORDS: Carbon, Remote sensing, Climatology, Carbon sequestration, Ecosystems, Climate change, Carbon dioxide, Vegetation

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SPIE Journal Paper | 24 May 2017

Phenology-based Spartina alterniflora mapping in coastal wetland of the Yangtze Estuary using time series of GaoFen satellite no. 1 wide field of view imagery

Jinquan Ai, Wei Gao, Zhiqiang Gao, Runhe Shi, Chao Zhang

JARS, Vol. 11, Issue 02, 026020, (May 2017) https://doi.org/10.1117/12.10.1117/1.JRS.11.026020

KEYWORDS: Satellites, Image classification, Ecosystems, Satellite imaging, Cameras, Vegetation, Reflectivity

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Spartina alterniflora is an aggressive invasive plant species that replaces native species, changes the structure and function of the ecosystem across coastal wetlands in China, and is thus a major conservation concern. Mapping the spread of its invasion is a necessary first step for the implementation of effective ecological management strategies. The performance of a phenology-based approach for S. alterniflora mapping is explored in the coastal wetland of the Yangtze Estuary using a time series of GaoFen satellite no. 1 wide field of view camera (GF-1 WFV) imagery. First, a time series of the normalized difference vegetation index (NDVI) was constructed to evaluate the phenology of S. alterniflora. Two phenological stages (the senescence stage from November to mid-December and the green-up stage from late April to May) were determined as important for S. alterniflora detection in the study area based on NDVI temporal profiles, spectral reflectance curves of S. alterniflora and its coexistent species, and field surveys. Three phenology feature sets representing three major phenology-based detection strategies were then compared to map S. alterniflora: (1) the single-date imagery acquired within the optimal phenological window, (2) the multitemporal imagery, including four images from the two important phenological windows, and (3) the monthly NDVI time series imagery. Support vector machines and maximum likelihood classifiers were applied on each phenology feature set at different training sample sizes. For all phenology feature sets, the overall results were produced consistently with high mapping accuracies under sufficient training samples sizes, although significantly improved classification accuracies (10%) were obtained when the monthly NDVI time series imagery was employed. The optimal single-date imagery had the lowest accuracies of all detection strategies. The multitemporal analysis demonstrated little reduction in the overall accuracy compared with the use of monthly NDVI time series imagery. These results show the importance of considering the phenological stage for image selection for mapping S. alterniflora using GF-1 WFV imagery. Furthermore, in light of the better tradeoff between the number of images and classification accuracy when using multitemporal GF-1 WFV imagery, we suggest using multitemporal imagery acquired at appropriate phenological windows for S. alterniflora mapping at regional scales.

SPIE Journal Paper | 29 March 2017

Validation of MODIS-based monitoring for a green tide in the Yellow Sea with the aid of unmanned aerial vehicle

Fuxiang Xu, Zhiqiang Gao, Weitao Shang, Xiaopeng Jiang, Xiangyu Zheng, Jicai Ning, Debin Song

JARS, Vol. 11, Issue 01, 012007, (March 2017) https://doi.org/10.1117/12.10.1117/1.JRS.11.012007

KEYWORDS: MODIS, Unmanned aerial vehicles, Spatial resolution, Satellites, Satellite imaging, Earth observing sensors, Charge-coupled devices, Multispectral imaging, Temporal resolution, Photography

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SPIE Journal Paper | 12 January 2017

Effects of land cover change on evapotranspiration in the Yellow River Delta analyzed with the SEBAL model

Jicai Ning, Zhiqiang Gao, Fuxiang Xu

JARS, Vol. 11, Issue 01, 016009, (January 2017) https://doi.org/10.1117/12.10.1117/1.JRS.11.016009

KEYWORDS: Earth observing sensors, Vegetation, Landsat, Heat flux, Remote sensing, Ecosystems, Meteorology, Soil science, Algorithm development, Reflectivity

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Proceedings Article | 19 September 2016 Paper

Nonlinear vegetation phenology shifts over northern China during 1982-2006

Youzhi An, Wenbo Liu, Wei Gao, Zhiqiang Gao, Chaoshun Liu, Runhe Shi

Proceedings Volume 9975, 99750N (2016) https://doi.org/10.1117/12.2235858

KEYWORDS: Vegetation, Temperature metrology, Climate change, Carbon, Climatology, Vegetation, Climate change, Nonlinear response, Data modeling, Remote sensing, Spatial resolution, Temporal resolution

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Proceedings Article | 19 September 2016 Paper

Error analysis on Green Tide monitoring using MODIS data in the Yellow Sea based on GF-1 WFV data

Fuxiang Xu, Zhiqiang Gao, Jicai Ning, Xiangyu Zheng, Chaoshun Liu, Wei Gao

Proceedings Volume 9975, 99750P (2016) https://doi.org/10.1117/12.2235908

KEYWORDS: Earth observing sensors, MODIS, Remote sensing, Error analysis, Image resolution, Satellites, Temporal resolution, Spatial resolution, Sensors, Satellite imaging

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Proceedings Article | 19 September 2016 Paper

Green tide disaster monitoring system based on multi-source data

Weitao Shang, Zhiqiang Gao, Xiaopeng Jiang, Chaoshun Liu, Wei Gao

Proceedings Volume 9975, 99750O (2016) https://doi.org/10.1117/12.2235897

KEYWORDS: Unmanned aerial vehicles, Remote sensing, Spatial resolution, Data modeling, Control systems, Satellites, Data processing, Imaging systems, Sun, Atmospheric corrections

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Proceedings Article | 19 September 2016 Paper

Study on the extraction method of tidal flat area in northern Jiangsu Province based on remote sensing waterlines

Yuanyuan Zhang, Zhiqiang Gao, Xiangyang Liu, Ning Xu, Chaoshun Liu, Wei Gao

Proceedings Volume 9975, 99750M (2016) https://doi.org/10.1117/12.2235838

KEYWORDS: Remote sensing, Satellite imaging, Earth observing sensors, Satellites, Image segmentation, Accuracy assessment, Analytical research, Internet, Image classification, Error analysis

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Proceedings Article | 19 September 2016 Paper

Implementation of data management and analysis system for marine ranching

Xiaopeng Jiang, Zhiqiang Gao, Weitao Shang, Chaoshun Liu, ZhiBin Sun

Proceedings Volume 9975, 99750R (2016) https://doi.org/10.1117/12.2236450

KEYWORDS: Remote sensing, Ocean optics, Image processing, Geographic information systems, Analytical research, Oceanography, Water, System integration, Human-machine interfaces, Image classification

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Proceedings Article | 19 September 2016 Paper

Remote sensing monitoring of green tide in the Yellow Sea in 2015 based on GF-1 WFV data

Xiangyu Zheng, Zhiqiang Gao, Jicai Ning, Fuxiang Xu, Chaoshun Liu, Zhibin Sun

Proceedings Volume 9975, 99750L (2016) https://doi.org/10.1117/12.2235833

KEYWORDS: Atmospheric corrections, Remote sensing, Atmospheric corrections, Remote sensing, Satellites, Data modeling, Image resolution, Atmospheric modeling, Spatial resolution, MODIS, Satellite imaging, Geographic information systems

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Proceedings Article | 19 September 2016 Paper

The study method of estimation tidal flat with remote sensing waterlines

Zhiqiang Gao, Xiangyang Liu, Yuanyuan Zhang, Chaoshun Liu, Zhibin Sun

Proceedings Volume 9975, 99750J (2016) https://doi.org/10.1117/12.2235205

KEYWORDS: Remote sensing, Image classification, Agriculture, Image resolution, Image segmentation, Satellite imaging, Satellites, Classification systems, Optical tracking, Edge detection

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SPIE Journal Paper | 25 April 2016 Open Access

Errata: Integrating pan-sharpening and classifier ensemble techniques to map an invasive plant (Spartina alterniflora) in an estuarine wetland using Landsat 8 imagery

Jinquan Ai, Wei Gao, Zhiqiang Gao, Runhe Shi, Chao Zhang, Chaoshun Liu

JARS, Vol. 10, Issue 02, 029901, (April 2016) https://doi.org/10.1117/12.10.1117/1.JRS.10.029901

KEYWORDS: Earth observing sensors, Landsat, Chaos, Information science, Ecology

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SPIE Journal Paper | 7 April 2016

Integrating pan-sharpening and classifier ensemble techniques to map an invasive plant (Spartina alterniflora) in an estuarine wetland using Landsat 8 imagery

Zhiqiang Gao, Jinquan Ai, Wei Gao, Runhe Shi, Chao Zhang, Chaoshun Liu

JARS, Vol. 10, Issue 02, 026001, (April 2016) https://doi.org/10.1117/12.10.1117/1.JRS.10.026001

KEYWORDS: Earth observing sensors, Image fusion, Vegetation, Landsat, Image classification, Data fusion, Image quality, Principal component analysis, Associative arrays, Image analysis

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Proceedings Article | 4 September 2015 Paper

Study on coastline change in Shandong Province based on geo-information TuPu

Xiangyang Liu, Zhiqiang Gao, Jicai Ning, Wei Gao

Proceedings Volume 9610, 96100Z (2015) https://doi.org/10.1117/12.2186486

KEYWORDS: Remote sensing, Data modeling, Analytical research, Scanners, Coastal modeling, Associative arrays, Visualization, Agriculture, Ecology, Data centers

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Proceedings Article | 4 September 2015 Paper

A study on China’s LUCC and carbon-sink response with remote sensing

Zhiqiang Gao, Xiangyu Zheng, Jicai Ning, Chaoshun Liu

Proceedings Volume 9610, 96100G (2015) https://doi.org/10.1117/12.2184663

KEYWORDS: Carbon, Vegetation, Remote sensing, Carbon dioxide, Biological research, Ecosystems, Analytical research, Statistical analysis, Climatology, Associative arrays

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Proceedings Article | 4 September 2015 Paper

Retrieval of water and heat flux based on fusion of LANDSAT TM/ETM+ and MODIS data

Jicai Ning, Zhiqiang Gao, Chaoshun Liu, Wei Gao

Proceedings Volume 9610, 96101D (2015) https://doi.org/10.1117/12.2184667

KEYWORDS: MODIS, Remote sensing, Spatial resolution, Vegetation, Heat flux, Thermography, Data modeling, Infrared radiation, Landsat, Earth observing sensors

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Proceedings Article | 4 September 2015 Paper

Detecting harmful algal blooms using Geostationary Ocean Color Imager (GOCI) data in Bohai Sea, China

Mingzhu Xu, Zhiqiang Gao, Chaoshun Liu

Proceedings Volume 9610, 96100U (2015) https://doi.org/10.1117/12.2184249

KEYWORDS: Magnetic resonance imaging, Remote sensing, Imaging systems, MODIS, Ocean optics, Sensors, Clouds, Reflectivity, Satellites, Temporal resolution

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Proceedings Article | 4 September 2015 Paper

Dynamic analysis on coastline and sea reclamation in the efficient ecological economic zone of the Yellow River Delta based on 30-years satellite data

Xiangyu Zheng, Zhiqiang Gao, Jicai Ning, Qingshui Lu

Proceedings Volume 9610, 96100X (2015) https://doi.org/10.1117/12.2186287

KEYWORDS: Remote sensing, Agriculture, Satellites, Data modeling, Data centers, Geographic information systems, Visualization, Spatial resolution, Analytical research, Coastal modeling

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Proceedings Article | 10 October 2014 Paper

Nuclear power plants in China's coastal zone: risk and safety

Qingshui Lu, Zhiqiang Gao, Jicai Ning, Xiaoli Bi, Wei Gao

Proceedings Volume 9221, 92210V (2014) https://doi.org/10.1117/12.2058425

KEYWORDS: Earthquakes, Safety, Floods, Remote sensing, Lutetium, Carbon dioxide, Bismuth, Coastal modeling, Agriculture, Ecology

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Proceedings Article | 10 October 2014 Paper

Spatial-temporal analysis of coastline changes around Bohai Sea based on remote sensing in recent 20a

Chong You, Zhiqiang Gao, Jicai Ning

Proceedings Volume 9221, 92210W (2014) https://doi.org/10.1117/12.2058944

KEYWORDS: Remote sensing, Geographic information systems, Image processing, Visualization, Information science, Analytical research, Standards development, Landsat, Coastal modeling, Earth observing sensors

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Proceedings Article | 10 October 2014 Paper

Dynamic analysis on coastline and sea reclamation in the region around Bohai based on remote sensing images

Xiangyang Liu, Zhiqiang Gao, Jicai Ning, Qingshui Lu

Proceedings Volume 9221, 92210U (2014) https://doi.org/10.1117/12.2058414

KEYWORDS: Remote sensing, Geographic information systems, Visualization, Data acquisition, Analytical research, Coastal modeling, Data modeling, Agriculture, Standards development, Information technology

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Proceedings Article | 10 October 2014 Paper

Research on construction of web 3D-GIS based on skyline

Tingting Wang, Zhiqiang Gao, Jicai Ning

Proceedings Volume 9221, 92210I (2014) https://doi.org/10.1117/12.2058581

KEYWORDS: 3D modeling, Geographic information systems, Data modeling, 3D image processing, Remote sensing, 3D acquisition, 3D displays, Visualization, Data conversion, 3D visualizations

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Proceedings Article | 8 October 2014 Paper

Spatial-temporal variability of coastline in Bohai Rim based on fractal dimension

Ning Xu, Zhiqiang Gao, Jicai Ning, Xiangyang Liu

Proceedings Volume 9221, 922117 (2014) https://doi.org/10.1117/12.2058942

KEYWORDS: Fractal analysis, Remote sensing, Data acquisition, Geographic information systems, Analytical research, Spatial resolution, Mouth, Spatial analysis, Landsat, Earth observing sensors

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Proceedings Article | 8 October 2014 Paper

The study of the spatio-temporal changes of drought in the Mongolian Plateau in 40 years based on TVDI

Xiaoming Cao, Yiming Feng, Juanle Wang, Zhiqiang Gao, Jicai Ning, Wei Gao

Proceedings Volume 9221, 92210X (2014) https://doi.org/10.1117/12.2059062

KEYWORDS: Soil science, Vegetation, Remote sensing, Data modeling, Ecosystems, MODIS, Forestry, Geographic information systems, Coastal modeling, Systems modeling

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Proceedings Article | 8 October 2014 Paper

The grain production potential assessment with multiple cropping index (MCI) in China

Zhiqiang Gao, Jicai Ning, Wei Gao

Proceedings Volume 9221, 922116 (2014) https://doi.org/10.1117/12.2058304

KEYWORDS: Remote sensing, Data modeling, Agriculture, Data centers, Environmental sensing, Statistical analysis, Meteorology, Atmospheric modeling, Statistical methods, Information security

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Proceedings Article | 8 October 2014 Paper

The responses of vegetation water content (EWT) along a coastal region using remote sensing

Zhiqiang Gao, Tingting Wang, Jicai Ning, Wei Gao

Proceedings Volume 9221, 92210H (2014) https://doi.org/10.1117/12.2058302

KEYWORDS: Vegetation, Remote sensing, Short wave infrared radiation, Heat flux, Infrared radiation, Near infrared, Data modeling, Ecosystems, Reflectivity, Shortwaves

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Proceedings Article | 8 October 2014 Paper

Analysis on the balance between supply and demand of cropland in Yantai City of China in 2020

Qiuxian Wang, Zhiqiang Gao, Jicai Ning, Ye Wang, Wei Gao

Proceedings Volume 9221, 922114 (2014) https://doi.org/10.1117/12.2062823

KEYWORDS: Agriculture, Statistical analysis, Mining, Climatology, Analytical research, Ecology, Carbon monoxide, Geography, Remote sensing, Ecosystems

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Proceedings Article | 8 October 2014 Paper

Geoscience information integration and visualization research of Shandong province, China based on ArcGIS engine

Mingzhu Xu, Zhiqiang Gao, Jicai Ning

Proceedings Volume 9221, 92210P (2014) https://doi.org/10.1117/12.2058426

KEYWORDS: Earth sciences, Data modeling, Geographic information systems, Databases, Raster graphics, Data storage, Vegetation, Information fusion, Visualization, Spatial analysis

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Proceedings Article | 2 October 2014 Paper

Spatial discretization of distributed hydrological response units for SWAT

Jicai Ning, Zhiqiang Gao, Wenjiang Zhang, Runhe Shi, Wei Gao

Proceedings Volume 9221, 922105 (2014) https://doi.org/10.1117/12.2058303

KEYWORDS: Calibration, Process modeling, Agriculture, Soil science, Mathematical modeling, Soil contamination, Databases, Spatial analysis, Surface properties, Climatology

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Proceedings Article | 24 September 2013 Paper

Analysis of non-point and point source pollution in China: case study in Shima Watershed in Guangdong Province

Huaiyang Fang, Qingshui Lu, Zhiqiang Gao, Runhe Shi, Wei Gao

Proceedings Volume 8869, 88691B (2013) https://doi.org/10.1117/12.2021594

KEYWORDS: Pollution, Pollution control, Water contamination, Animal model studies, Environmental sensing, Meteorology, Analytical research, Lutetium, Remote sensing, Coastal modeling

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Proceedings Article | 24 September 2013 Paper

Assessment of desertification in the agro-pastoral transitional zone in Northern China (1982-2006) using GIMMS NDVI data

Youzhi An, Wei Gao, Zhiqiang Gao, Chaoshun Liu, Runhe Shi

Proceedings Volume 8869, 886913 (2013) https://doi.org/10.1117/12.2021857

KEYWORDS: Vegetation, Climate change, Infrared sensors, Sensors, Satellites, Data centers, Clouds, Meteorology, Remote sensing, Ecosystems

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Proceedings Article | 24 September 2013 Paper

Differential analysis on urban heat island based on air temperature and LST

Ke Liu, Xingfa Gu, Wei Gao, Zhiqiang Gao

Proceedings Volume 8869, 88690Q (2013) https://doi.org/10.1117/12.2023240

KEYWORDS: Meteorology, Temperature metrology, Climatology, Environmental sensing, Remote sensing, MODIS, Information science, Geography, Analytical research, Wind energy

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Proceedings Article | 24 September 2013 Paper

The relation between the urban heat island effect and the underlying surface LUCC of meteorological stations

Ke Liu, Wei Gao, Xingfa Gu, Zhiqiang Gao

Proceedings Volume 8869, 88690R (2013) https://doi.org/10.1117/12.2023229

KEYWORDS: Vegetation, Thermal effects, Temperature metrology, Meteorology, Data modeling, Environmental sensing, Landsat, Remote sensing, Knowledge management, Earth observing sensors

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Proceedings Article | 24 September 2013 Paper

Monitoring drought in the Monglian Plateau based on NDVI_Ts general space, 2000-2010

Xiaoming Cao, Juanle Wang, Zhiqiang Gao, Jicai Ning, Runhe Shi, Wei Gao

Proceedings Volume 8869, 88690Y (2013) https://doi.org/10.1117/12.2022503

KEYWORDS: Remote sensing, Data modeling, Ecosystems, MODIS, Vegetation, Coastal modeling, Agriculture, Ecology, Carbon monoxide, Natural disasters

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Proceedings Article | 24 September 2013 Paper

Study on spatio-temporal vegetation cover changes based on MODIS NDVI data in the Mongolian Plateau, 2000-2012

Xiaoming Cao, Juanle Wang, Zhiqiang Gao, Jicai Ning, Runhe Shi, Wei Gao

Proceedings Volume 8869, 88690Z (2013) https://doi.org/10.1117/12.2022502

KEYWORDS: Vegetation, MODIS, Remote sensing, Ecosystems, Data modeling, Data centers, Coastal modeling, Agriculture, Ecology, Carbon

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Proceedings Article | 24 September 2013 Paper

The research on the fairness of carbon emissions for China's energy based on GIS

Qiuxian Wang, Zhiqiang Gao, Jicai Ning, Qingshui Lu, Runhe Shi, Wei Gao

Proceedings Volume 8869, 886910 (2013) https://doi.org/10.1117/12.2022413

KEYWORDS: Carbon, Carbon dioxide, Geographic information systems, Ecology, Energy efficiency, Statistical analysis, Pollution control, Lutetium, Analytical research, Climate change

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Proceedings Article | 24 September 2013 Paper

The study on the changing characteristics and their countermeasures for China's carbon emissions in 2000-2010

Qiuxian Wang, Zhiqiang Gao, Jicai Ning, Qing-shui Lu, Runhe Shi, Wei Gao

Proceedings Volume 8869, 886911 (2013) https://doi.org/10.1117/12.2022339

KEYWORDS: Carbon dioxide, Carbon, Cements, Solar energy, Climate change, Consciousness, Statistical analysis, Combustion, Photovoltaics, Data conversion

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Proceedings Article | 24 September 2013 Paper

Evapotranspiration analysis based on topography algorithm in the Yellow River Delta

Jicai Ning, Zhiqiang Gao, Runhe Shi, Wei Gao

Proceedings Volume 8869, 88690G (2013) https://doi.org/10.1117/12.2021561

KEYWORDS: Remote sensing, Satellites, Vegetation, Atmospheric modeling, Data modeling, Heat flux, Agriculture, Climatology, Radon, Earth observing sensors

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Proceedings Article | 24 September 2013 Paper

Soil erosion, policy and management in China coastal zone

Qingshui Lu, Zhiqiang Gao, Qiao Chen, Jicai Ning, Runhe Shi, Wei Gao

Proceedings Volume 8869, 886919 (2013) https://doi.org/10.1117/12.2021638

KEYWORDS: Soil science, Vegetation, Climatology, Remote sensing, Coastal modeling, Spatial analysis, Cesium, Virtual colonoscopy, Data modeling, Environmental sensing

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Proceedings Article | 24 September 2013 Paper

Analysis trends of ultraviolet B fluxes in the continental US with USDA and TOMS data

Zhiqiang Gao, Jicai Ning, Runhe Shi, Wei Gao

Proceedings Volume 8869, 88690I (2013) https://doi.org/10.1117/12.2021250

KEYWORDS: Clouds, Ozone, Ultraviolet radiation, Aerosols, Data modeling, Atmospheric modeling, Climate change, Rayleigh scattering, Atmospheric particles, Remote sensing

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Proceedings Article | 24 September 2013 Paper

Concomitant flow and space variations of evapotranspiration due to changes in LUCC under seawater intrusion in a coastal region

Zhiqiang Gao, Jicai Ning, Xiaoming Cao, Runhe Shi, Wei Gao

Proceedings Volume 8869, 88690J (2013) https://doi.org/10.1117/12.2021249

KEYWORDS: Remote sensing, Landsat, Double patterning technology, Satellites, Composites, Infrared imaging, Thermography, Infrared radiation, Vegetation, Earth observing sensors

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Proceedings Article | 24 October 2012 Paper

A multi-channel calibration method for multi-filter rotating shadow-band radiometer

Maosi Chen, John Davis, Hongzhao Tang, Zhiqiang Gao, Wei Gao

Proceedings Volume 8513, 851305 (2012) https://doi.org/10.1117/12.929454

KEYWORDS: Calibration, Aerosols, Channel projecting optics, Radiometry, Solar radiation, Solar radiation models, Geometrical optics, Clouds, Atmospheric modeling, Radio optics

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Proceedings Article | 24 October 2012 Paper

Dynamic modelling of future land-use change: a comparison between CLUE-S and Dinamica EGO models

Wei Yi, Zhiqiang Gao, Maosi Chen

Proceedings Volume 8513, 85130H (2012) https://doi.org/10.1117/12.927781

KEYWORDS: Modeling, Agriculture, Data modeling, Climate change, Roads, Data centers, Geographic information systems, Ecology, Optical spheres, Ecosystems

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Proceedings Article | 24 October 2012 Paper

The simulation of land surface process with MODIS data in Haihe basin, China

Zhiqiang Gao, Wei Gao, Xiaoming Cao, Maosi Chen

Proceedings Volume 8513, 85130Q (2012) https://doi.org/10.1117/12.928295

KEYWORDS: Data modeling, Vegetation, Solar radiation models, Remote sensing, Solar radiation, MODIS, Atmospheric modeling, Agriculture, Heat flux, Absorption

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Proceedings Article | 24 October 2012 Paper

The analysis of net primary productivity in China based on GEOLUE model

Zhiqiang Gao, Wei Gao, Xiaoming Cao, Maosi Chen

Proceedings Volume 8513, 85130R (2012) https://doi.org/10.1117/12.928296

KEYWORDS: Data modeling, Vegetation, Computer simulations, Atmospheric modeling, Solar radiation models, Climatology, Ecosystems, Carbon, Remote sensing, Climate change

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Proceedings Article | 24 October 2012 Paper

The differences in the transpiration of non-irrigated Haloxylon ammodendron in hinterland of Gurbantunggut desert based on diameter

Xiao-ming Cao, Juan-le Wang, Mao-si Chen, Zhiqiang Gao

Proceedings Volume 8513, 85130O (2012) https://doi.org/10.1117/12.928277

KEYWORDS: Meteorology, Solar radiation, Humidity, Vegetation, Sun, Solar radiation models, Soil science, Ecology, Wind energy, Resistance

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Proceedings Article | 24 October 2012 Paper

Land-use and land-cover sceneries in China: an application of Dinamica EGO model

Wei Yi, Zhiqiang Gao, Zhihua Li, Maosi Chen

Proceedings Volume 8513, 85130I (2012) https://doi.org/10.1117/12.927782

KEYWORDS: Remote sensing, Modeling, Computing systems, Information science, Climate change, Systems modeling, Information security, Natural disasters, Ecosystems, Artificial neural networks

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Proceedings Article | 24 October 2012 Paper

The transpiration and the spectral response of non-irrigated Haloxylon ammodendron at canopy scale

Xiao-ming Cao, Juan-le Wang, Zhiqiang Gao, Mao-si Chen

Proceedings Volume 8513, 85130M (2012) https://doi.org/10.1117/12.928275

KEYWORDS: Reflectivity, Remote sensing, Neodymium, Vegetation, Error analysis, Data modeling, Ecology, Hyperspectral simulation, Ecosystems, Current controlled current source

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Proceedings Article | 16 September 2011 Paper

Integrating satellite for drought impact assessment in a developed coastal region

Zhiqiang Gao, Wei Gao

Proceedings Volume 8156, 81560H (2011) https://doi.org/10.1117/12.890389

KEYWORDS: Vegetation, Remote sensing, Satellites, Landsat, Soil science, Climatology, MODIS, Ecology, Atmospheric sensing, Earth observing sensors

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Proceedings Article | 16 September 2011 Paper

The extraction of multiple cropping index of China based on NDVI time-series

Haitao Huang, Zhiqiang Gao

Proceedings Volume 8156, 81560Z (2011) https://doi.org/10.1117/12.891895

KEYWORDS: Remote sensing, Vegetation, Clouds, Agriculture, Contamination, Composites, Reflectivity, Statistical analysis, Environmental sensing, Sensors

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Proceedings Article | 16 September 2011 Paper

Ten-day response of vegetation to temperature and prcipitation in Xinjiang during the period of 1998-2009, China

Xiao-ming Cao, Zhi-qiang Gao, Xi Chen

Proceedings Volume 8156, 81560L (2011) https://doi.org/10.1117/12.892891

KEYWORDS: Vegetation, Temperature metrology, Meteorology, Environmental sensing, Analytical research, Climate change, Climatology, Spatial resolution, Ecology, Ecosystems

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SPIE Journal Paper | 1 October 2010

Comparative analyses of the ultraviolet-B flux over the continental United State based on the NASA total ozone mapping spectrometer data and USDA ground-based measurements

Zhiqiang Gao, Wei Gao, Ni-Bin Chang

JARS, Vol. 4, Issue 01, 043547, (October 2010) https://doi.org/10.1117/12.10.1117/1.3507249

KEYWORDS: Ozone, Aerosols, Ultraviolet radiation, Clouds, Spectroscopy, Agriculture, Associative arrays, Satellites, Statistical analysis, Sensors

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Proceedings Article | 12 August 2010 Paper

A study on assessment of urbanization and ecosystem changes based on MODIS time series in Shanghai municipality from 2000 to 2009

Zhi-hua Li, Wei Gao, Zhi-qiang Gao, Run-he Shi, Chao-shun Liu

Proceedings Volume 7809, 78090R (2010) https://doi.org/10.1117/12.858605

KEYWORDS: Vegetation, Ecosystems, Accuracy assessment, MODIS, Volume rendering, Data modeling, Remote sensing, Environmental management, Classification systems, Data processing

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Proceedings Article | 12 August 2010 Paper

Urban expansion and landscape diversity change of Shanghai City, China

Jun Wang, Wei Gao, Zhiqiang Gao, Jie Yin, Shiyuan Xu

Proceedings Volume 7809, 78091A (2010) https://doi.org/10.1117/12.864255

KEYWORDS: Ecosystems, Agriculture, Ecology, Infrared imaging, Infrared radiation, Transparency, Geographic information systems, Classification systems, Lithium, Remote sensing

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Proceedings Article | 12 August 2010 Paper

Comparative analysis of UVB exposure between Nimbus 7/TOMS satellite estimates and ground-based measurements

Zhiqiang Gao, Wei Gao

Proceedings Volume 7809, 78090Q (2010) https://doi.org/10.1117/12.858452

KEYWORDS: Ultraviolet radiation, Satellites, Data modeling, Ozone, Sensors, Skin, Clouds, Statistical analysis, Data centers, Aerosols

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Proceedings Article | 12 August 2010 Paper

Application of MODIS time series data for drought assessment in East China

Chaoshun Liu, Runhe Shi, Wei Gao, Zhiqiang Gao

Proceedings Volume 7809, 78090P (2010) https://doi.org/10.1117/12.858184

KEYWORDS: Vegetation, MODIS, Soil science, Remote sensing, Reflectivity, Absorption, Near infrared, Meteorology, Short wave infrared radiation, Climatology

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SPIE Journal Paper | 1 December 2009

Modeling the land surface heat exchange process with the aid of moderate resolution imaging spectroradiomer images

Zhiqiang Gao, Wenjiang Zhang, Wei Gao, Ni-Bin Chang

JARS, Vol. 3, Issue 01, 033573, (December 2009) https://doi.org/10.1117/12.10.1117/1.3290811

KEYWORDS: Data modeling, Heat flux, Vegetation, MODIS, Remote sensing, Solar radiation models, Satellites, Aerodynamics, Resistance, In situ remote sensing

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Proceedings Article | 21 August 2009 Paper

Land cover classification based on the MODIS-EVI time-series using decision tree method

Ran Meng, Zhiqiang Gao

Proceedings Volume 7454, 745410 (2009) https://doi.org/10.1117/12.824096

KEYWORDS: MODIS, Vegetation, Spatial resolution, Remote sensing, Ecosystems, Data modeling, Denoising, Temporal resolution, Climate change, Climatology

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Proceedings Article | 21 August 2009 Paper

Crop classification using MODIS EVI series in North China

Maosi Chen, Zhiqiang Gao, Wei Gao

Proceedings Volume 7454, 74541D (2009) https://doi.org/10.1117/12.825795

KEYWORDS: Vegetation, Wavelets, Binary data, MODIS, Data modeling, Computer programming, Spatial resolution, Statistical analysis, Discrete wavelet transforms, Wavelet transforms

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Proceedings Article | 21 August 2009 Paper

The temperature change of regional difference in Anhui Province, China

Ke Liu, Zhiqiang Gao, Wei Gao

Proceedings Volume 7454, 745417 (2009) https://doi.org/10.1117/12.824865

KEYWORDS: Climatology, Temperature metrology, Climate change, Remote sensing, Ecology, Carbon monoxide, Environmental sensing, Analytical research, Ecosystems, Current controlled current source

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Proceedings Article | 21 August 2009 Paper

Application of MODIS data for assessment of evapotranspiration and drought in Northern China

Chaoshun Liu, Wei Gao, Zhiqiang Gao, Runhe Shi

Proceedings Volume 7454, 74541P (2009) https://doi.org/10.1117/12.825190

KEYWORDS: MODIS, Soil science, Remote sensing, Meteorology, Wind energy, Vegetation, Error analysis, Geographic information systems, Climatology, Associative arrays

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Proceedings Article | 21 August 2009 Paper

100a climate change and its impact on vegetation ecological zoning in China

Zhiqiang Gao, Meng Ran, Wei Gao

Proceedings Volume 7454, 745411 (2009) https://doi.org/10.1117/12.824115

KEYWORDS: Climate change, Vegetation, Climatology, Temperature metrology, Data modeling, Remote sensing, Environmental sensing, Data acquisition, Ecology, Data centers

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Proceedings Article | 21 August 2009 Paper

Estimating photosynthetic light-use efficiency of Changbai Mountain by using MODIS-derived photochemical reflectance index

Xiaoping Xie, Zhiqiang Gao, Wei Gao

Proceedings Volume 7454, 745415 (2009) https://doi.org/10.1117/12.824644

KEYWORDS: MODIS, Reflectivity, Ecosystems, Remote sensing, Solar radiation models, Spatial resolution, Clouds, Backscatter, Environmental sensing, Luminescence

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Proceedings Article | 21 August 2009 Paper

Atmospheric correction model of Landsat images

Chaoshun Liu, Wei Gao, Zhiqiang Gao, Runhe Shi

Proceedings Volume 7454, 745412 (2009) https://doi.org/10.1117/12.824230

KEYWORDS: Atmospheric corrections, Reflectivity, Atmospheric modeling, Landsat, Atmospheric particles, Remote sensing, Aerosols, Satellites, Atmospheric sensing, Earth observing sensors

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Proceedings Article | 3 November 2008 Paper

Impacts of land use and climate change on the net primary productivity in XinJiang based on remote sensing

Weiguo Liu, Wei Gao, Zhiqiang Gao, Guanghui Lv

Proceedings Volume 7145, 71452C (2008) https://doi.org/10.1117/12.813068

KEYWORDS: Ecosystems, Climatology, Remote sensing, Climate change, Data modeling, Vegetation, Environmental sensing, Satellites, Carbon, Ecology

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Arid and semi-arid ecosystems exhibit a spatially complex biogeophysical structure. According to arid western special climate-vegetation characters, using the remote sensing spectral mixture analysis. The study developed a modified production efficiency model Net Primary Productivity-Geography Processing Ecology Model (NPP-GPEM) appropriate for the arid area at regional scale based on the concept of radiation use efficiency. Combined with recent historical period climate data and two periods of land use data sets from remote sensing data, we test the net primary productivity (NPP) data sets over last 20 years in XinJiang of the North China modelled by the NPP-GPEM with the satellite data-driven for detecting the wide spread spatial temporal characteristics of the impacts of climate and land use change impact with the regional NPP. Our results shows that over past 20 years, the average annual temperature in the research region has remarkably increased by more than 0.056°C, but over the same period, there has been a 0.635mm increase in annual precipitation and increase in NPP by an annual rate of 0.142TgC. Taking use of 16 land covers of Xinjiang which was carried on the calculation of the matrix transfer, the study got the matrix of the NPP changes over past 20 years. The result found that the quicker trend increasing is the others woodlands (the 5.51gC/m2/yr) and the oasis farmland (4.32 gC/m2/yr). The pasture area is the biggest to about 29.3% of total area, the pasture growth is smaller than others, but its increase to the contribution rate of the annual NPP in the whole land ecosystem system biggest is pasture and agricultures to land use covers, that had the total annual NPP increase with 52.2% and 19.9% of the quantity respectively, the plant cover is only the shrub pant which has a absolute decrease ecosystem system in the type (- 14.39gC/m2); In fine, the paper mainly reveals the dissimilarities and conversion among the pasture, farmland, woodland and different covered pasture and other types. The correlation analysis between annual NPP and annual precipitation was highly consistent with plant cover spatially (R2=0.64, P<0.01) in the overall XinJiang, and the northern of XingJiang is better than the southern of it, and the correlation coefficient changes with the changes of vegetation types and different regions. The analysis revealed that the climate changes dominate the impacts on the NPP in the whole study region. However, land use plays a dominative role in the areas with land cover changes. Over past 20 years, the NPP in the whole study region remarkably increased due to obvious precipitation decrease and temperature rise. Between two periods of land use (about 10 years), the changes in climate are predicted to cause increases in NPP, and combined impacts of climate changes and land use to cause to increase in NPP.

Proceedings Article | 10 September 2008 Paper

Estimating winter wheat biomass based on LANDSAT TM and MODIS data

Yansong Bao, Wei Gao, Zhiqiang Gao

Proceedings Volume 7083, 70831L (2008) https://doi.org/10.1117/12.806210

KEYWORDS: Biological research, MODIS, Reflectivity, Landsat, Vegetation, Data modeling, Infrared radiation, Near infrared, Short wave infrared radiation, Earth observing sensors

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Proceedings Article | 10 September 2008 Paper

The comparing study of net primary production in China

Zhiqiang Gao, Xiaoming Cao, Maosi Chen, Wei Gao

Proceedings Volume 7083, 70830M (2008) https://doi.org/10.1117/12.791581

KEYWORDS: Process modeling, Atmospheric modeling, Carbon, Solar radiation models, Data modeling, Vegetation, Photosynthesis, Climatology, Climate change, Spatial resolution

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Proceedings Article | 10 September 2008 Paper

Estimation of land photosynthetically active radiation in clear sky using MODIS atmosphere and land products

Xiaoping Xie, Wei Gao, Zhiqiang Gao

Proceedings Volume 7083, 70830O (2008) https://doi.org/10.1117/12.791693

KEYWORDS: MODIS, Atmospheric modeling, Solar radiation models, Atmospheric particles, Absorption, Aerosols, Rayleigh scattering, Ozone, Scattering, Spatial resolution

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Proceedings Article | 10 September 2008 Paper

Improvements of regional evapotranspiration model by considering topography correction

Chaoshun Liu, Wei Gao, Zhiqiang Gao, Shiyuan Xu

Proceedings Volume 7083, 70830L (2008) https://doi.org/10.1117/12.791580

KEYWORDS: Satellites, Remote sensing, Atmospheric modeling, Data modeling, Climatology, Earth observing sensors, Heat flux, Meteorology, Temperature metrology, Landsat

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Proceedings Article | 10 September 2008 Paper

Research response of land surface water and heat flux to land use land cover changes in Laizhou Bay

Xiaoyan Zhou, Xiaoming Cao, Maosi Chen, Zhiqiang Gao

Proceedings Volume 7083, 70830J (2008) https://doi.org/10.1117/12.791575

KEYWORDS: Heat flux, Data modeling, Remote sensing, Landsat, Wind energy, Atmospheric modeling, Environmental sensing, Solar radiation models, Image processing, Earth observing sensors

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Proceedings Article | 10 September 2008 Paper

Assessing the impact of future climate change on wheat production in Huang-Huai-Hai Plain in China based on GIS and crop model

Zhan Tian, Jun Shi, Zhiqiang Gao, Francesco Tubiello

Proceedings Volume 7083, 70830H (2008) https://doi.org/10.1117/12.795625

KEYWORDS: Climate change, Atmospheric modeling, Climatology, Calibration, Data modeling, Carbon dioxide, Solar radiation models, Agriculture, Process modeling, Temperature metrology

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Proceedings Article | 10 September 2008 Paper

A method for estimating the incident PAR on inclined surfaces

Xiaoping Xie, Wei Gao, Zhiqiang Gao

Proceedings Volume 7083, 70830P (2008) https://doi.org/10.1117/12.791695

KEYWORDS: Atmospheric modeling, Solar radiation models, MODIS, Rayleigh scattering, Absorption, Aerosols, Atmospheric particles, Scattering, Ozone, Solar radiation

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Proceedings Article | 22 October 2007 Paper

Urban heat island in Shanghai, China

Linli Cui, Jun Shi, Zhiqiang Gao

Proceedings Volume 6679, 667911 (2007) https://doi.org/10.1117/12.731068

KEYWORDS: Thermal effects, Roads, Temperature metrology, Meteorology, Climatology, Statistical analysis, Environmental sensing, Remote sensing, Ecosystems, MODIS

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Proceedings Article | 22 October 2007 Paper

The study of urban sprawl and simulation based on remote sensing and CLUS model

Zhiqiang Gao, Wei Gao, Zhang Jie

Proceedings Volume 6679, 66791A (2007) https://doi.org/10.1117/12.726943

KEYWORDS: Remote sensing, Data modeling, Solar radiation models, Ecology, Roads, Ecosystems, Earth observing sensors, Landsat, Satellite imaging, Satellites

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Proceedings Article | 22 October 2007 Paper

Construction of land data assimilation system based on EnKF technology and community land model

Qifeng Lu, Wei Gao, Zhiqiang Gao, Wanli Wu, Chaohua Dong, Zhongdong Yang, Peng Zhang, Bingyu Du, James Slusser

Proceedings Volume 6679, 667912 (2007) https://doi.org/10.1117/12.727868

KEYWORDS: Data modeling, Soil science, Atmospheric modeling, Climatology, Systems modeling, Meteorological satellites, Satellites, Solar radiation models, Error analysis, Radiative transfer

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Proceedings Article | 22 October 2007 Paper

A study of retrieval land surface temperature and evapotranspiration in response to LUCC based on remote sensing data

Chaoshun Liu, Wei Gao, Zhiqiang Gao

Proceedings Volume 6679, 66791F (2007) https://doi.org/10.1117/12.726039

KEYWORDS: Remote sensing, Landsat, Data modeling, Wind energy, Analytical research, Algorithm development, Radon, Heat flux, Atmospheric modeling, Earth observing sensors

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Proceedings Article | 22 October 2007 Paper

Assessing the impact of climate change on the crop potential productivity in Huang-Huai-Hai Plain in China based on crop model and GIS technique

Zhan Tian, Xiaotu Lei, Zhiqiang Gao

Proceedings Volume 6679, 66790Z (2007) https://doi.org/10.1117/12.730982

KEYWORDS: Climate change, Atmospheric modeling, Data modeling, Climatology, Gases, Solar radiation models, Geographic information systems, Agriculture, Process modeling, Carbon monoxide

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Proceedings Article | 22 October 2007 Paper

Temperature change and its effect factors in the Yangtze Delta, China

Jun Shi, Xu Tang, Linli Cui, Zhiqiang Gao

Proceedings Volume 6679, 667910 (2007) https://doi.org/10.1117/12.731065

KEYWORDS: Temperature metrology, Climate change, Climatology, Environmental sensing, Statistical analysis, Meteorology, Earth's atmosphere, Remote sensing, Data centers, Ecosystems

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Proceedings Article | 9 October 2007 Paper

Correlations of snow depth retrieved from SSM/I with precipitation and temperature over China

Wei Gao, Qifeng Lu, Zhiqiang Gao, Wanli Wu, Bingyu Du, James Slusser

Proceedings Volume 6679, 667913 (2007) https://doi.org/10.1117/12.727856

KEYWORDS: Snow cover, Climate change, Climatology, Temperature metrology, Meteorology, Environmental sensing, Satellites, Data centers, Data modeling, Lithium

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Proceedings Article | 27 September 2006 Paper

Numerical simulation of surface heat and water fluxes in the Tibet Plateau

Qifeng Lu, Wei Gao, Zhiqiang Gao, Wanli Wu, Zhigang Zhang, Bingyu Du, James Slusser

Proceedings Volume 6298, 62981H (2006) https://doi.org/10.1117/12.676199

KEYWORDS: Soil science, Atmospheric modeling, Heat flux, Temperature metrology, Solar radiation models, Device simulation, Pulmonary function tests, Climatology, Performance modeling, Numerical simulations

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Proceedings Article | 27 September 2006 Paper

Analysis of temporal variations of surface albedo from MODIS

Wei Gao, Qifeng Lu, Zhiqiang Gao, Wanli Wu, Bingyu Du, James Slusser

Proceedings Volume 6298, 62981G (2006) https://doi.org/10.1117/12.676197

KEYWORDS: MODIS, Climatology, Atmospheric modeling, Data modeling, Bidirectional reflectance transmission function, Remote sensing, Reflectivity, Vegetation, Environmental sensing, Atmospheric sciences

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Proceedings Article | 27 September 2006 Paper

Correlation analysis between the biomass of oasis ecosystem and the vegetation index at Fukang

Weiguo Liu, Wei Gao, Zhiqiang Gao, Xinli Wang

Proceedings Volume 6298, 62982M (2006) https://doi.org/10.1117/12.678178

KEYWORDS: Vegetation, Ecosystems, Data modeling, Satellites, Remote sensing, Biological research, MODIS, Statistical analysis, Ecology, Radiation effects

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Proceedings Article | 27 September 2006 Paper

Scaling characteristics of remotely sensed surface net radiance over densely vegetated grassland in Northern China

Wenjiang Zhang, Zhiqiang Gao

Proceedings Volume 6298, 62981O (2006) https://doi.org/10.1117/12.675930

KEYWORDS: Vegetation, Landsat, Reflectivity, Solar radiation, Statistical analysis, Radon, Data analysis, Signal attenuation, Spatial resolution, Earth observing sensors

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Proceedings Article | 27 September 2006 Paper

Spectral distribution of UV-B irradiance derived by synthetic model compared with simulation results of TUV and ground measurements

Xinli Wang, Wei Gao, James Slusser, John Davis, Zhiqiang Gao, Gwen Scott, Becky Olson, Nickolay Krotkov, Min Xu, Xin-Zhong Liang

Proceedings Volume 6298, 62980L (2006) https://doi.org/10.1117/12.681464

KEYWORDS: Ultraviolet radiation, Data modeling, Radiometry, Ozone, Atmospheric modeling, Radiation effects, Agriculture, Ecosystems, Clouds, Calibration

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Multifilter rotating shadowband radiometers are deployed in the United States, Canada, and New Zealand by the USDA (United States Department of Agriculture) UV-B (ultraviolet-B) Monitoring and Research Program to measure UV-B irradiances at seven discrete wavelengths. A synthetic model is used to construct the continuous spectral distribution, from which irradiance integrals can be performed for various purposes. The derived spectral data are posted for public use through a web accessible database. Although the synthetic model has been validated with a certain data set, few works have been seen to compare the results of the synthetic model with simulations of other widely accepted models such as TUV. Through this comparison the validation of the synthetic model can be further confirmed and alternative techniques for constructing spectral irradiances from discrete narrowband measurements can also be explored. In this study the data from the USDA UV-B Monitoring and Research Program are used to evaluate the synthetic model and to explore the capability of the TUV model for constructing continuous spectra from discrete measurements. Simulations of the TUV model are compared with discrete measurements, erythema-weighted broadband measurements, and the results of the synthetic model. Good agreements between derived results by using TUV model and the synthetic model with measurements in general further confirm the validation of the synthetic model. Generally, the spectral irradiances constructed by using synthetic model are lower than those by using the TUV model at very shorter wavelengths (<301 nm) and at the wavelengths of 315-342 nm, but are higher at other wavelengths. The ratio of erythemal doses derived by using the TUV simulation to broadband measurements varies between 0.87-1.02. Constructed erythemal doses by using the TUV simulation are closer to broadband measurements than those obtained by using the synthetic model. These results suggest that the TUV model may be a good alternative to accurately estimate continuous spectral distributions from discrete measurements.

Proceedings Article | 27 September 2006 Paper

Net primary production and its change in Chinese plantation

Shi Jun, Zhiqiang Gao, Cui Linli

Proceedings Volume 6298, 62981K (2006) https://doi.org/10.1117/12.677345

KEYWORDS: Data modeling, Carbon, Environmental sensing, Remote sensing, Atmospheric modeling, Neodymium, Vegetation, Climate change, Climatology, Databases

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Proceedings Article | 27 September 2006 Paper

Estimation of the ecological degeneration from changes in land use and land covers in the upper reaches of the Tarim River

Aniwaer Amut, Lu Gong, Zhenyan Yuan, Theodore Crovello, Zhiqiang Gao

Proceedings Volume 6298, 62982H (2006) https://doi.org/10.1117/12.696342

KEYWORDS: Ecosystems, Ecology, Climatology, Data centers, Analytical research, Statistical analysis, Classification systems, Remote sensing, Raw materials, Lutetium

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Proceedings Article | 27 September 2006 Paper

The LUCC responses to climatic changes in China in the last 20 years

Zhiqiang Gao, Wei Gao, James Slusser

Proceedings Volume 6298, 629818 (2006) https://doi.org/10.1117/12.676236

KEYWORDS: Climatology, Climate change, Data modeling, Vegetation, Ecosystems, Environmental sensing, Remote sensing, Databases, Agriculture, Ecology

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Proceedings Article | 27 September 2006 Paper

Assessment of aeolian desertification in Korqin Sand, China

Cui Linli, Fan Wenyi, Shi Jun, Zhiqiang Gao

Proceedings Volume 6298, 62981L (2006) https://doi.org/10.1117/12.677346

KEYWORDS: Vegetation, Image retrieval, Data acquisition, Soil science, Hyperspectral imaging, Spectroscopy, Remote sensing, Reflectivity, Visualization, Environmental sensing

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Proceedings Article | 7 September 2006 Paper

Research on the role of several feature extraction methods in the landcover/landuse classification

Linli Cui, Jun Shi, Zhiqiang Gao

Proceedings Volume 6307, 63070N (2006) https://doi.org/10.1117/12.677847

KEYWORDS: Image classification, Classification systems, Visualization, Feature extraction, Remote sensing, Visual analytics, Environmental sensing, Algorithms, Spatial resolution, Error analysis

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Proceedings Article | 13 September 2005 Paper

Spatial pattern of forest cover changes in the northeast China since 1980s

Ying Li, Zhiqiang Gao, Yuping Jing, Shuwen Zhang

Proceedings Volume 5884, 588416 (2005) https://doi.org/10.1117/12.614287

KEYWORDS: Ecosystems, Remote sensing, Carbon, Data modeling, Geographic information systems, Agriculture, Statistical analysis, Statistical modeling, Analytical research, Ecology

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Proceedings Article | 1 September 2005 Paper

Assessing the applicability of assimilating MODIS data products into crop growth models: a case study in Yucheng, ShanDong Province, China

Zhan Tian, Junbang Wang, Zhiqiang Gao

Proceedings Volume 5884, 58840X (2005) https://doi.org/10.1117/12.613070

KEYWORDS: MODIS, Data modeling, Solar radiation models, Remote sensing, Atmospheric modeling, Process modeling, Spatial resolution, Computer simulations, Vegetation, Agriculture

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Proceedings Article | 1 September 2005 Paper

Study on water consumption by vegetation evapotranspiration in the Mid-Yellow River region based on remote sensing data

Dejuan Jiang, Lijuan Li, Xiyong Hou, Huixiao Wang, Zhiqiang Gao, Junwei Yang, Jiuyi Li

Proceedings Volume 5884, 588411 (2005) https://doi.org/10.1117/12.613627

KEYWORDS: Vegetation, Remote sensing, Soil science, Meteorology, Lithium, Geographic information systems, Floods, Landsat, Calibration, Earth observing sensors

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Proceedings Article | 1 September 2005 Paper

Construction of surface boundary conditions for regional climate modeling in China by using the remote sensing data

Wei Gao, Zhiqiang Gao, Hyun Choi, Min Xu, James Slusser

Proceedings Volume 5884, 588413 (2005) https://doi.org/10.1117/12.620149

KEYWORDS: Climatology, Data modeling, Remote sensing, Climate change, Environmental sensing, Vegetation, Ecosystems, Agriculture, Satellites, Geographic information systems

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The continuing rise in atmospheric CO2 is considered as a main cause of the future changes in global climate. Predicted climate changes include an increase in mean annual air temperature and alterations in precipitation pattern and cloud cover. Elevated atmospheric CO₂ and climate changes are expected to influence the ecosystems. The regional climate models (RCMs) will likely remain primary tools for climate prediction in the foreseeable future. The importance of RCMs is increasing in addressing scientific problems associated with climate variability, changes, and impacts at regional scales. The RCMs have been also used in climate impact studies on ecosystems, especially in agricultural crops by generating climate scenarios for input to crop models. With a large volume of satellite remote sensing data of the earth terrestrial surface becoming available, precisely monitoring the dynamics of the land surface state variables for agricultural and land use management becomes possible6. With the effort to study the climate crop interactions we plan to use a CWRF model (a climate extension of the Weather Research and Forecasting model-WRF) developed by the Illinois State Water Survey to form the climate scenarios. The WRF model is based upon the most advanced supercomputing technologies and promises greater efficiency in computation and flexibility in new module incorporation. This extension inclusively incorporates all WRF functionalities for numerical weather predictions while enhancing the capability for climate applications. To represent the surface-atmosphere interactions the CWRF requires specification of surface boundary conditions (SBCs) over both land and oceans. A comprehensive set of SBCs based on best observational data is desired for CWRF general applications for all effective, dynamically coupled or uncoupled, combinations of the surface modules, as well as for any specific region of the world. This report followed the approach of Liang et al. presents a preliminary work to construct vegetative SBCs for the CWRF modeling effort in China domain by using remote sensing data from TM, AVHRR, MODIS which are freely available. The full list of the CWRF SBCs was defined by Liang.

Proceedings Article | 1 September 2005 Paper

An analysis of seasonal and interannual variability of LAI during 1982 to 2004

Qifeng Lu, Wei Gao, Zhiqiang Gao, Wanli Wu, Xiaoling Pan, Bingyu Du, James Slusser

Proceedings Volume 5884, 58840U (2005) https://doi.org/10.1117/12.612983

KEYWORDS: MODIS, Vegetation, Climatology, Reflectivity, Soil science, Data modeling, Environmental sensing, Error analysis, Atmospheric monitoring, Atmospheric sciences

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Proceedings Article | 1 September 2005 Paper

Numerical simulation of Summer 2003 climate in China region using RegCM3

Shuyan Liu, Wei Gao, Zhiqiang Gao, Hua Zhang, Bingyu Du

Proceedings Volume 5884, 58840V (2005) https://doi.org/10.1117/12.612988

KEYWORDS: Climatology, Clouds, Data modeling, Climate change, Atmospheric modeling, Humidity, Systems modeling, Environmental sensing, Convection, Performance modeling

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Proceedings Article | 1 September 2005 Paper

Seasonal dynamics of terrestrial net primary production in China

Jun Shi, Zhiqiang Gao, Linli Cui

Proceedings Volume 5884, 588418 (2005) https://doi.org/10.1117/12.614658

KEYWORDS: Climate change, Data modeling, Climatology, Atmospheric modeling, Carbon, Vegetation, Ecosystems, Temperature metrology, Carbon monoxide, Remote sensing

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Proceedings Article | 1 September 2005 Paper

The response of leaf area index to climate change during 1981-2000 in China

Zhiqiang Gao, Wei Gao, James Slusser

Proceedings Volume 5884, 58840S (2005) https://doi.org/10.1117/12.612929

KEYWORDS: Climate change, Climatology, Temperature metrology, Vegetation, Databases, Spatial resolution, Radiometry, Lead, Meteorology, Ecology

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Proceedings Article | 1 September 2005 Paper

Monitoring spatiotemporal changes of urban vegetation abundance by normalized spectral mixture analysis (NSMA): the case study of Nanjing, China

Su Li, Dafang Zhuang, Zhiqiang Gao, Shunyan Hou

Proceedings Volume 5884, 588419 (2005) https://doi.org/10.1117/12.614717

KEYWORDS: Vegetation, Shape memory alloys, Reflectivity, Earth observing sensors, High resolution satellite images, Principal component analysis, Landsat, Spatial resolution, Environmental monitoring, Image classification

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Proceedings Article | 1 September 2005 Paper

Net primary productivity and its spatiotemporal patterns in Loess Plateau during 1981–2000

Huading Shi, Zhiqiang Gao, Jun Shi

Proceedings Volume 5884, 58840W (2005) https://doi.org/10.1117/12.612992

KEYWORDS: Vegetation, Data modeling, Carbon, Remote sensing, Meteorology, Statistical modeling, Atmospheric modeling, Climate change, Climatology, Environmental sensing

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Proceedings Article | 1 September 2005 Paper

The response of vegetation cover to precipitation and temperature in central/east Tibetan Plateau

Wenjiang Zhang, Zhiqiang Gao, Jun Shi

Proceedings Volume 5884, 588414 (2005) https://doi.org/10.1117/12.613407

KEYWORDS: Vegetation, Climatology, Satellites, Biological research, Environmental sensing, Computer simulations, Meteorology, Climate change, Temperature metrology, Ecosystems

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Proceedings Article | 1 September 2005 Paper

Grade agricultural soil loss amount by integrating GIS technology and USLE in upstream of Yangtze River, China

Shi-bo Fang, Wu-nian Yang, Zhiqiang Gao

Proceedings Volume 5884, 58840O (2005) https://doi.org/10.1117/12.614878

KEYWORDS: Soil science, Agriculture, Geographic information systems, Analytical research, Climatology, Remote sensing, Floods, Roads, Ecosystems, Lutetium

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Proceedings Article | 1 September 2005 Paper

Simulations of a rainfall process in Southeastern China with WRF and MM5

Qifeng Lu, Wei Gao, Zhiqiang Gao, Wanli Wu, Xiaoling Pan, Dajun Wang, Bingyu Du, James Slusser

Proceedings Volume 5884, 58840T (2005) https://doi.org/10.1117/12.612982

KEYWORDS: Data modeling, Atmospheric modeling, Climatology, Computer simulations, Error analysis, Coastal modeling, Device simulation, Physics, Atmospheric monitoring, Atmospheric sciences

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Proceedings Article | 1 September 2005 Paper

GIS grid calculation method application in urban eco-environment assessment: a case study of Longxi County in Gansu Province, China

Xiaojun Zhang, Suocheng Dong, Weihong Yin, Shuang Li, Zhiqiang Gao

Proceedings Volume 5884, 588410 (2005) https://doi.org/10.1117/12.613290

KEYWORDS: Geographic information systems, Soil science, Analytical research, Environmental sensing, Remote sensing, Dynamical systems, Ecology, Agriculture, Spatial analysis, Mining

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Proceedings Article | 1 September 2005 Paper

Assessment of gully erosion in a semi-arid catchment of the Loess Plateau, China using photogrammetric techniques

Wensheng Hu, Jiyuan Liu, Qiangguo Cai, Zhiqiang Gao

Proceedings Volume 5884, 58841Q (2005) https://doi.org/10.1117/12.628711

KEYWORDS: Soil science, Digital photography, Photography, Head, Geographic information systems, Data modeling, Remote sensing, Surface plasmons, Knowledge management, Climatology

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Proceedings Article | 1 September 2005 Paper

Modeling the dynamics of urban sprawl and spatial landscape pattern in Beijing metropolitan area

Jie Zhang, Xiaoling Pan, Zhiqiang Gao, Qingdong Shi, Guanghui Lv, Wei Gao

Proceedings Volume 5884, 58840Y (2005) https://doi.org/10.1117/12.613219

KEYWORDS: Agriculture, Ecosystems, Roads, Ecology, Statistical modeling, Climatology, Landsat, Imaging systems, Data modeling, Earth observing sensors

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Proceedings Article | 1 September 2005 Paper

Impact of urban sprawl on carbon uptake in Beijing metropolitan area

Jie Zhang, Xiaoling Pan, Zhiqiang Gao, Qingdong Shi, Guanghui Lv, Wei Gao

Proceedings Volume 5884, 58840Z (2005) https://doi.org/10.1117/12.613220

KEYWORDS: Data modeling, Carbon, Ecosystems, Agriculture, Satellites, Magnesium, Vegetation, Photovoltaics, Roads, Soil science

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Proceedings Article | 1 September 2005 Paper

Grade agricultural soil loss amount by integrating GIS and USLE in upstream of Yangtze River, China

Shi-bo Fang, Shi-liang Liu, Zhiqiang Gao

Proceedings Volume 5884, 58841B (2005) https://doi.org/10.1117/12.614936

KEYWORDS: Geographic information systems, Agriculture, Soil science, Analytical research, Climatology, Data modeling, Neodymium, Vegetation, Botany, Roads

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Proceedings Article | 29 August 2005 Paper

Assessment of land degradation and its spatial and temporal variation in Beijing surrounding area

Shuang Li, Suocheng Dong, Xiaojun Zhang, Gao Zhiqiang

Proceedings Volume 5890, 58900K (2005) https://doi.org/10.1117/12.618799

KEYWORDS: Remote sensing, Vegetation, Forestry, Landsat, Environmental sensing, Data processing, Environmental monitoring, Lithium, Analytical research, Earth observing sensors

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Proceedings Article | 9 November 2004 Paper

Recent land-use change and its impact on farmland productivity in China

Jiyuan Liu, Xinliang Xu, Zhiqiang Gao, Dafang Zhuang

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.563312

KEYWORDS: Climatology, Climate change, Environmental sensing, Databases, Dynamical systems, Atmospheric modeling, Agriculture, Data modeling, Quantum efficiency, Thermal modeling

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Proceedings Article | 9 November 2004 Paper

Impacts of seasonal climate on net primary productivity (NPP) in Xinjiang, 1981-2000

Wei Gao, Zhiqiang Gao, Xiaoling Pan, James Slusser, Jiaguo Qi, Xiwu Zhan, Yingjun Ma

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.563611

KEYWORDS: Climatology, Temperature metrology, Climate change, Vegetation, Data modeling, Satellites, Environmental sensing, Ecosystems, Atmospheric modeling, Photosynthesis

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Proceedings Article | 9 November 2004 Paper

Dynamic monitoring of land-use change in Loess Plateau using multi-temporal Landsat TM data

Xiyong Hou, Jiyuan Liu, Zhiqiang Gao, Dafang Zhuang, Xinfang Yu

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.558876

KEYWORDS: Remote sensing, Landsat, Geographic information systems, Vegetation, Agriculture, Acquisition tracking and pointing, Inspection, Forestry, Climate change, Earth observing sensors

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Proceedings Article | 9 November 2004 Paper

Temporal-spatial patterns of wetlands changes in China and driving force analysis

Shuwen Zhang, Yangzhen Zhang, Jing Chen, Yanhong Zhang, Zhiqiang Gao

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.559264

KEYWORDS: Ecosystems, Climatology, Photoacoustic tomography, Geographic information systems, Vegetation, Analytical research, Remote sensing, Data modeling, Floods, Biology

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Proceedings Article | 9 November 2004 Paper

The spatial-temporal patterns and the driving forces of land-use/cover change in the Dongting Lake area of the middle Yangtze River basin

Rendong Li, Jiyuan Liu, Dafang Zhuang, Zhiqiang Gao

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.563383

KEYWORDS: Agriculture, Databases, Landsat, Visualization, Remote sensing, Environmental management, Floods, Satellite imaging, Satellites, Earth observing sensors

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Proceedings Article | 9 November 2004 Paper

Analysis on impact of climate changes over the past twenty years on NPP in China

Zhiqiang Gao, Jiyuan Liu, Mingkui Cao, Qi Wang, Wei Gao, James Slusser, Xiaoling Pan

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.563614

KEYWORDS: Climatology, Climate change, Data modeling, Vegetation, Temperature metrology, Carbon, Ecosystems, Environmental sensing, Remote sensing, Process modeling

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Proceedings Article | 9 November 2004 Paper

Remotely sensed changes in agricultural productivity in China from the 1980s to the 1990s

Huimin Yan, Jiyuan Liu, Mingkui Cao, Zhiqiang Gao, Dafang Zhuang, Jiankun Guo, Xinliang Xu

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.559157

KEYWORDS: Agriculture, Satellites, Vegetation, Data modeling, Solar radiation models, Climatology, Remote sensing, Ecosystems, Climate change, Soil science

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Proceedings Article | 9 November 2004 Paper

Net primary productivity and its spatiotemporal patterns in Northeast China during 1981—2000

Jun Shi, Jiyuan Liu, Zhiqiang Gao, Linli Cui, Qi Wang

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.556666

KEYWORDS: Data modeling, Vegetation, Carbon, Remote sensing, Climate change, Atmospheric modeling, Climatology, Meteorology, Environmental sensing, Process modeling

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Proceedings Article | 9 November 2004 Paper

A case study on the relationship between soil geochemical components and salinization in the western Jilin Province of China

Yingbo Zhu, Quansheng Ge, Jiyuan Liu, Yunxuan Zhou, Zhiqiang Gao, Siqing Chen

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.559269

KEYWORDS: Soil science, Germanium, Beryllium, Sodium, Barium, Antimony, Thallium, Strontium, Lead, Selenium

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Proceedings Article | 9 November 2004 Paper

Digital Northeast China for about 100 years: RS dynamic observations and GIS frame design and example analysis regarding resources and the environment in Northeast China

Shuwen Zhang, Xinliang Xu, Ying Li, Liping Chang, Yangzhen Zhang, Zhiqiang Gao

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.559160

KEYWORDS: Remote sensing, Geographic information systems, Environmental sensing, Databases, Agriculture, Analytical research, Landsat, Roads, Information technology, Earth observing sensors

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Proceedings Article | 9 November 2004 Paper

Preliminary numerical study on climate response to vegetation change in sensitive climatic area in arid region of China

Qifeng Lu, Wei Gao, Xiaoling Pan, Zhiqiang Gao, Jifeng Liu

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.604619

KEYWORDS: Climatology, Vegetation, Climate change, Environmental sensing, Soil science, Physics, Ecosystems, Integrated modeling, Data modeling, Ecology

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Proceedings Article | 9 November 2004 Paper

Temporal-spatial analysis of dynamic change for grassland in the western part of Songnen Plain of China

Liping Chang, Yangzhen Zhang, Shuwen Zhang, Ying Li, Zhiqiang Gao

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.561578

KEYWORDS: Vegetation, Remote sensing, Data modeling, Agriculture, Data acquisition, Lithium, Roads, Forestry, Associative arrays, Environmental sensing

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Proceedings Article | 9 November 2004 Paper

Cropland change detection with SPOT-4 VEGETATION imagery in Inner Mongolia, China

Jiankun Guo, Jiyuan Liu, Guoman Huang, Dafang Zhuang, Zhiqiang Gao, Huimin Yan

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.559420

KEYWORDS: Vegetation, Composites, Clouds, Fourier transforms, Agriculture, Temporal resolution, Remote sensing, Sensors, Spatial resolution, Roads

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Proceedings Article | 14 October 2004 Paper

Some key preprocessing techniques on airborne imaging spectrometer data for quantitative analysis

Linli Cui, Wenyi Fan, Jun Shi, Ping Tang, Zhongming Zhao, Zhiqiang Gao

Proceedings Volume 5548, (2004) https://doi.org/10.1117/12.556669

KEYWORDS: Reflectivity, Spectroscopy, Hyperspectral imaging, Remote sensing, Vegetation, Atmospheric sensing, Sensors, Quantitative analysis, Data acquisition, Airborne remote sensing

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Proceedings Article | 22 December 2003 Paper

Landscape heterogeneity and net primary productivity (NPP) of mountain-oasis-desert ecosystems in western China

Jie Zhang, Xiaoling Pan, Zhiqiang Gao, Wei Gao, Suling Zhao, Qingdong Shi, Guanghui Lu

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.524183

KEYWORDS: Ecosystems, Vegetation, Carbon, Process modeling, Data modeling, Ecology, Geographic information systems, Satellites, Climatology, Near infrared

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Proceedings Article | 22 December 2003 Paper

Remote sensing and modeling the dynamics of soil moisture and vegetative cover of arid and semiarid areas

Xiwu Zhan, Wei Gao, Jiaguo Qi, Paul Houser, James Slusser, Xiaoling Pan, Zhiqiang Gao, Yingjun Ma

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.505670

KEYWORDS: Data modeling, Satellites, Remote sensing, Vegetation, Soil science, MODIS, Systems modeling, Agriculture, Satellite imaging, Earth observing sensors

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Proceedings Article | 22 December 2003 Paper

Responses of net primary productivity (NPP) in Xinjiang to climate changes from 1981-2000

Wei Gao, Zhiqiang Gao, Xiaoling Pan, James Slusser, Mingkui Cao, Jiaguo Qi, Jie Zhang, Xiwu Zhan, Yingjun Ma

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.511576

KEYWORDS: Climatology, Vegetation, Climate change, Satellites, Temperature metrology, Soil science, Environmental sensing, Photosynthesis, Earth observing sensors, Mathematical modeling

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Proceedings Article | 22 December 2003 Paper

Sensitivity analysis of response of land cover change to climate change from 1992 to 2000 across Xinjiang

Shunli Chang, Qingdong Shi, Xiaoling Pan, Guanghui Lu, Suling Zhao, Zhiqiang Gao, Wei Gao

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.524180

KEYWORDS: Vegetation, Humidity, Climate change, Temperature metrology, Climatology, Ecosystems, Remote sensing, Agriculture, Geographic information systems, Meteorology

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Proceedings Article | 14 July 2003 Paper

Land cover analysis along semi-arid transects in Asia

Dennis Ojima, Zhiqiang Gao, Jiyuan Liu, Mary Kneeland, Togtohyn Chuluun

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.465913

KEYWORDS: Climatology, Ecosystems, Agriculture, Biological research, Remote sensing, Soil science, Climate change, Carbon, Environmental sensing, Natural disasters

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Current estimates of land cover and land use are important aspects in understanding the flux of material and energy from terrestrial ecosystems into hydrological and atmospheric components of the earth system. These land use characteristics define the various dimensions of human impacts on ecosystem processes and resource use. The recent availability of global remote sensing data and agricultural census data from various regions of the world, including portions of Asia such as China and Mongolia, now makes it feasible to evaluate differences in the physical environment and land use patterns affecting land cover and land use changes. In addition, recent research involving transects studies along gradients of climate, soil, and land use intensity has been carried out during the past decade to allow more careful regional comparisons. Using the analysis of the Mongolian-North East China Transect (NECT), we can estimate the effect of land cover differences on ecosystem dynamics. The 30 m-Thematic Mapper data provides a way to identify fine scale features of the regional landscape patterns which are not captured by the 1-km AVHRR data. The focus of this paper is to evaluate the scale of land use and cover changes in the Asian region and the biogeochemical implications of these changes. The estimates of land cover and land use can vary depending on the spatial scale of the features represented across the land surface. Both physical and social factors influence the spatial extent these features represent. Therefore, the scale of land use intensification can affect the accuracy of land use area estimations. In particular, those regions of the world where land use practices are implemented via small individual holdings may be underestimated when using coarse scale remote sensing data such as AVHRR, where as the Thematic Mapper satellite data at 30 to 50 m resolution can provide a better estimate of land cover and land use area. The accuracy of the extrapolated fluxes of ecosystem dynamics and biogeochemical cycles are directly proportional to the accuracy associated with the land estimates. We will evaluate the land cover estimates in this region of Asia using these data sources. This region encompasses a broad set of precipitation and temperature regimes and includes characteristics of regional land cover and land use related to grazing systems and grain cultivation.

Proceedings Article | 14 July 2003 Paper

The sensitivity of NPP to climate controls in northern China estimated by CLM model coupled with RS and GIS technology

Zhiqiang Gao, Wei Gao, James Slusser, Xiaoling Pan, Yingjun Ma

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.465503

KEYWORDS: Climatology, Control systems, Climate change, Vegetation, Remote sensing, Temperature metrology, Data modeling, Environmental sensing, Atmospheric modeling, Geographic information systems

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