利用气候变量实现对NDVI所表示的植被绿度信息的预测，以表达生物圈过去和未来状态，对全球变化研究是非常重要的。分析了1983～1992年降水的年际动态、季节动态与中国北方几种典型植被类型NDVI的关系，以及降水的空间分异对植被的影响。结果表明，降水的年际变化对植被生长的影响存在着明显的区域差异；在不同植被类型分布区，10年间降水的季节分配动态不同，降水季节分配的变化对不同类型植被生长有重要的影响；地表植被NDVI对降水的时空变化敏感。

It is very important to research on global change to predict vegetation green--up information showed by NDVI using climate variations, because the relationship between NDVI and climate variations can be used to predict past and future status on earth. In this research, the relationship between NDVI and seasonal and inter -- annual precipitation change from 1983 to 1992, and impact of spatial distribution of precipitation on vegetation were studied for several typically vegetation types in northern China. The results showed impact of precipitation inter--annual change on vegetation growth were very different for regions of several vegetation types. Seasonal precipitation distribution was different for different vegetation types in 10 years, vegetation growth were influenced strongly by seasonal precipitation distribution. NDVI was sensitive to temporal -- spatial change of precipitation.