【摘要】 利用具有较高空间分辨率的ＬａｎｄｓａｔＴＭ卫星资料估算了黑河实验区夏季和近冬季地表标准化差值植被指数ＮＤＶＩ，分析了ＮＤＶＩ的区域分布特征和季节变化。结果表明，由于该实验区下垫面的复杂性，ＮＤＶＩ表现出明显的空间和季节变化，ＮＤＶＩ的图像能够很好地反映出地表植被的分布状况。更多还原

【Abstract】 Normalized difference vegetation index(NDVI) over HEIFE area in summer and near winter are derived from Landsat TM data. The spatial distribut i on and seasonal change of NDVI are obvious due to the complicity of underlying surface in this area. It is shown that the situation of vegetation of surface c an be reflected well by NDVI.更多还原