Dynamic change and quantitative analysis of Zhelin Bay based on multi-source spatial data

Dandan Zhang; Xiaomei Yang; Xiaoyu Sun; Jianming Gong; Yong Liu

doi:10.1117/12.812742

5 November 2008 Dynamic change and quantitative analysis of Zhelin Bay based on multi-source spatial data

Dandan Zhang, Xiaomei Yang, Xiaoyu Sun, Jianming Gong, Yong Liu

Proceedings Volume 7144, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: The Built Environment and Its Dynamics; 71441B (2008) https://doi.org/10.1117/12.812742
Event: Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 2008, Guangzhou, China

Abstract

As one of the most important aquatic products raising bases of Guangdong province in China, Zhelin Bay has experienced high intensity of exploitation and utilization during the recent decades. This paper aims at the dynamic change of Zhelin Bay, multi-source data of digital land use map, topographical map, and geomorphological map of the National Coastal Survey of china in 1980s, Landsat TM satellite imagery obtained in 2000, land use data in 2000, as well as SPOT imagery and land use data from the newly National 908 Remote Sensing Survey were used. The data were preprocessed in a uniform mathematical foundation at first. Water area rate, open degree, and morphology coefficient which can depict the change of bays in different respect were taken as quantitative indicators to analyze the morphological changes of Zhelin Bay. The classification based on these indicators was then made in each period of time. Finally, the comprehensive spatio-temporal change of the bay was evaluated in a Changing Index model. Analysis results show that, during the latest 20 years, the water area rate has changed evidently from 0.8503 to 0.7410, leading to the category of Zhelin Bay changed from entire-water bay to much-water bay. Besides, the Changing Index of Zhelin Bay during the latest 20 years is 0.44%. Reasons for the change were discussed and some suggestions were given in the end of the paper.

Citation Download Citation

Dandan Zhang, Xiaomei Yang, Xiaoyu Sun, Jianming Gong, and Yong Liu "Dynamic change and quantitative analysis of Zhelin Bay based on multi-source spatial data", Proc. SPIE 7144, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: The Built Environment and Its Dynamics, 71441B (5 November 2008); https://doi.org/10.1117/12.812742

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