Using TM image in 1988 and ETM+ image in 2003 and based on NDVI,this article analyzes dynamic changes about vegetation cover of Miyi county from 1988 to 2003 with the help of GIS.

• 利用1988年TM图像和2003年ETM+图像,基于植被指数(NDVI),反演二滩库区米易县植被覆盖度,并借助GIS技术,对米易县1988-2003年植被覆盖动态变化进行分析。