| Features and trends of the environmental change in the arid areas in Central Asia |
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| 作者单位： | ZHOU KeFa（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China） ;ZHANG Qing（Institute of Remote Sensing and Geographical Information System, Peking University, Beijing 100871, China） ;CHEN Xi（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China） ;SUN Li（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China） ; |
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| 基金项目： | 中国科学院知识创新工程项目;国家自然科学基金 |
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| 摘 要： | RS-monitoring index systems of ecological environment changes at a large scale, based on empirical data and trends in environmental change in Central Asia, are developed using NOAA and MODIS data. Moreover, with the help of mathematical statistics and GIS spatial analysis, the degrees, hazards and distribution extent of various possible ecological problems are discussed, environmental changes in Central Asia in 1990 and 2005 are separately evaluated, and dynamic changes in the environment in Central Asia over a 15-year period are analyzed. The results reveal that during the 15-year period from 1990 to 2005, areas of degenerated vegetation in Kazakhstan, Uzbekistan, Turkmenistan, Kirghizstan and Tadzhikistan were enlarged by 0.069×105 km2, 0.081×105 km2, 0.296×105 km2, 0.022×105 km2 and 0.112×105 km2, respectively. The ecological environment in Central Asia was in the state of significant degeneration and even deterioration. This study proves that NOAA and MODIS data can be used to successfully monitor the environment and provide useful results.
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Features and trends of the environmental change in the arid areas in Central Asia |
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| ZHOU KeFa,ZHANG Qing,CHEN Xi,SUN Li. Features and trends of the environmental change in the arid areas in Central Asia[J]. Science in China(Earth Sciences), 2007, 50(Z1): 142-148 |
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| Authors: | ZHOU KeFa ZHANG Qing CHEN Xi SUN Li |
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| Abstract: | |
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| Keywords: | Central Asia ecological environment vegetation coverage GIS RS |
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