中文摘要：

对雅鲁藏布江流域归一化差值植被指数（nonnalized difference vegetation index，NDVI）时空变化特征分析的同时，把流域站点降水量点数据插值成与流域NDVI相一致的空间Grid数据，并对流域NDVI与降水量的关系进行了分析．考虑到降水量插值误差的存在，分析了流域站点NDVI与降水量的关系．结果表明，流域与流域站点NDVI与降水量均具有较强的季节性与时间上的一致性．其线性相关系数与对数相关系数都在0．7以上．

英文摘要：

As an index of denoting basin＇s vegetation cover, NDVI （normalized difference vegetation index） is influenced by many climatic factors such as precipitation. In this paper, the spatial-temporal change of NDVI is analyzed in Yarlung Tsangpo River basin. Meanwhile, the point data of basin＇s precipitation are interpolated to spatial grid data in consistence with NDVI data. Then, the relation between NDVI and precipitation is analyzed in the basin. Also, the relation between NDVI and precipitation of the basin＇s stations is analyzed because interpolation errors are considered. The conclusion is that NDVI and precipitation in the basin and of the basin＇s stations are more intensive with season and are in consistency with time. Their linear and logarithmic correlation coefficients are above 0. 7.