以河西走廊疏勒河流域中下游区域为研究区，分析该地区土地覆盖动态变化及其与地下水的相关性。利用2000—2008年每年8月份的MOD13Q1数据及2000年的ETM+遥感影像数据，采用监督分类技术，对研究区不同时期的土地覆盖进行了划分，对比分析了2个不同时期(2000—2004年和2004—2008年)的土地覆盖变化。结合研究区昌马灌区地下水监测资料，建立植被指数与地下水埋深的Pearson相关模型，计算了植被指数和地下水埋深相关系数。分析结果表明，对于不同地下水的埋深区间和不同的土地覆盖类型，相关系数具有一定差异；天然植被与地下水埋深有较大的相关性。%The Shule River Basin,a typical inland river basin in arid region of northwest China,was se⁃lected as the study area in this paper. Based on the data of MOD13Q1 images, the land cover databases at three times (2000,2004 and 2008) were established,and the temporal and spatial patterns of land cov⁃er were analyzed based on the geographical information system. The results show that the changes of land cover in the Shule River Basin were related with the spatial distribution of water resources. What’s the rela⁃tionship between the land cover and water resources? Based on the groundwater data from monitoring wells in Changma region, Pearson relational models were established between enhanced vegetation index (EVI) and groundwater level,and the correlation coefficients were calculated. The results show that correlation re⁃lationships between EVI and groundwater are different in different land cover types as well as in different range of groundwater level,and the natural vegetation is significantly correlated to groundwater level.
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