| 安昌河流域植被覆盖的遥感动态研究 |
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| 引用本文： | 唐美英,李力,杨娟.安昌河流域植被覆盖的遥感动态研究[J].安徽农业科学,2010,38(23):12770-12772. |
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| 作者姓名： | 唐美英 李力 杨娟 |
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| 作者单位： | 四川农业大学,四川雅安,625014 |
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| 摘 要： | 以安县1988、2000、2008年3个时相的TM遥感影像为基础源,采用归一化植被指数像元二分法估算了安县的植被覆盖度。在此基础上求得研究区不同植被覆盖等级的变化转移矩阵,并分析了安昌河流域20年来植被覆盖的时空变化特征及原因。
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| 关 键 词： | 植被覆盖度 遥感影像 归一化植被指数（NDVI） 安县 |
Remote Sensing and Dynamic Research on Vegetation Coverage of Anchang River Watershed |
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| Institution: | TANG Mei-ying et al (Sichuan Agricultural University,Yaan,Sichuan 625014) |
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| Abstract: | With TM remote sensing images of 3 time-phases of 1988,2000 and 2008 of Anxian county as basic sources,the vegetation coverage of Anxian county was estimated by using normalized difference vegetation index-pixel dichotomy. On this base,the variation and transferring matrix of different vegetation coverage grades in research area was obtained and the time-space variation characters of vegetation coverage of Anchang river watershed in recent 20 years and their reasons were analyzed. |
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| Keywords: | Vegetation coverage Remote sensing image Normalized difference vegetation index (NDVI) Anxian county |
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