4～10月藏北地区地表植被参数的卫星遥感研究

Vegetation Index Estimated fsom Satellite Remote Sensing over the Northern Tibetan Plateau from April to October

利用MODIS可见光和近红外1～3波段的卫星资料推算得到“全球能量水循环之亚洲季风青藏高原实验”（GAME／Tibet）实验区4～10月季风前后的地表植被参数的变化情况，并将其与NOAA-14 AVHRR卫星资料分析得到的实验区的植被参数进行了比较。同时分析了不同算法在青藏高原的适用性。

Using the MODIS data from band 1～3, the vegetation index （NDVI, MSAVI, vegetation coverage Pv and LAI） over GAME/Tibet （GEWEX （Global Energy and Water cycle Experiment）Asian Monsoon Experiment on the Tibetan Plateau） experimental area was retrieved. Seven scenes of MODIS datum used in our study were from April to October. We use the result which derived from the MODIS to compare with the one which determined by the AVHRR. In this paper we also used different methods to retrieve the vegetation index and to see which one is best applicable for the Tibetan Plateau.