Remote sensing of landcover changes in Turfan Basin of northwest China using Landsat and ASTER data

Hong-lie Qiu; Junping Zhong

doi:10.1117/12.441400

25 September 2001 Remote sensing of landcover changes in Turfan Basin of northwest China using Landsat and ASTER data

Hong-lie Qiu, Junping Zhong

Proceedings Volume 4548, Multispectral and Hyperspectral Image Acquisition and Processing; (2001) https://doi.org/10.1117/12.441400
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China

Abstract

Remote Sensing data acquired by various sensors during the last 40 years for the Turfan Basin in northwest China were compiled and processed to map and monitor changes of surface features related to hydrological conditions within the basin. Various image processing techniques were used to map surface features directly or indirectly related to former lake levels and groundwater tables for inferring conditions of the past climate. Special attention has been paid to the distribution of open water body, playa salt crust, waterlogged and salinized soils, and desert vegetation. With improved spatial resolution and more spectral bands, data acquired by ASTER sensor were explored to get additional information for discriminating these surface features. The compiled data indicate that Aiding Lake was a seasonal lake as early as in 1961. For the last 40 years, Aiding Lake has existed as a lake with open water only during the spring and early summer months. The size of the lake water body and timing and duration of the lake phase have varied year to year, suggesting that Aiding Lake is highly sensitive to climatic fluctuations and it is an ideal location for detecting possible impacts of global climatic changes.

Citation Download Citation

Hong-lie Qiu and Junping Zhong "Remote sensing of landcover changes in Turfan Basin of northwest China using Landsat and ASTER data", Proc. SPIE 4548, Multispectral and Hyperspectral Image Acquisition and Processing, (25 September 2001); https://doi.org/10.1117/12.441400

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KEYWORDS

Earth observing sensors

Climatology

Photography

Landsat

Satellites

Short wave infrared radiation

Climate change

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