| 近30a来长江源区沙漠化时空演变过程及成因分析 |
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| 引用本文： | 胡光印,董治宝,逯军峰,颜长珍,魏振海.近30a来长江源区沙漠化时空演变过程及成因分析[J].干旱区地理,2011,34(2):300-308. |
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| 作者姓名： | 胡光印 董治宝 逯军峰 颜长珍 魏振海 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所沙漠与沙漠化重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家自然基金重点项目(40638038) |
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| 摘 要： | 通过遥感与地理信息系统技术对1975-2005年长江源区沙漠化发展状况进行了监测,监测结果显示:长江源区有大面积的沙漠化土地分布,在这30 a问,沙漠化土地面积明显增加,尤其是极重度沙漠化土地的增加最为明显.长江源区不同程度的沙漠化土地总面积从1975年的31 118.3 km2增加到2005年的33 923.25 k...
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| 关 键 词： | 长江源 沙漠化 遥感监测 青藏高原 |
Land desertification monitoring in the Source Region of Yangtze River from 1975 to 2005 and the analysis of its causes |
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| HU Guang-yin,DONG Zhi-bao,LU Jun-feng,YAN Chang-zhen,WEI Zhen-hai.Land desertification monitoring in the Source Region of Yangtze River from 1975 to 2005 and the analysis of its causes[J].Arid Land Geography,2011,34(2):300-308. |
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| Authors: | HU Guang-yin DONG Zhi-bao LU Jun-feng YAN Chang-zhen WEI Zhen-hai |
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| Institution: | HU Guang-yin,DONG Zhi-bao,LU Jun-feng,YAN Chang-zhen,WEI Zhen-hai(Key Laboratory of Desert and Desertification,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Science,Lanzhou 730000,Gansu,China) |
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| Abstract: | To obtain the spatial-temporal information of land desertification in the source region of the Yangtze River,Landsat MSS images in 1975 and Landsat TM images in 2005 were used to monitor the desertification land with the assistance of RS and GIS techniques.To accurately classify the desertification land,we investigated the study area at the beginning of this research by taking a series of photographs of each type of desertification land and recording its geographic coordinates using a global positioning sys... |
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| Keywords: | source region of Yangtze River desertification remote sensing monitoring Qinghai-Tibet Plateau |
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