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准确、快速地获取植被覆盖信息是矿区生态恢复和建设的关键与重点。通过利用榆林市神府矿区1986、1993、2000、2006年四景同期TM影像数据,使用ERDAS软件首先提取植被指数(NDVI),根据像元二分法利用ERDAS的建模工具Spatial Modeler计算出矿区的植被覆盖度,利用非监督分类方法对矿区的植被覆盖度进行分类、赋色,最后得出矿区1986~2006年的植被覆盖度分类图,定量的说明了矿区20 a年间的植被覆盖变化情况:植被覆盖度整体提高,在局部矿区则有所降低。 更多还原

【Abstract】 It is very important to obtain vegetation fraction information for ecology recovery and construction in coalmine area.Data from TM images from the years 1986,1993,2000 and 2006 around Shenfu coalmine area were used to exbract normalized difference vegetation index(NDVI) by the software ERDAS firstly,then using spatial modeler of ERDAS compute vegetation fraction and classify through unsupervised classification.Finally,we get vegetation fraction mapping of coalmine within 1986~2006.It clearly ind... 更多还原