Based on three sets of TM data(1997,2002 and 2005),the land use information was extracted by the method of unsupervised classification.Using the tools of geographical information system(GIS) combined with statistics,this paper analyzed the quantitative change and the spatial change of the land use types,and also the dynamic change of land use on different slopes.The results are as follows: cultivated land,forest and grassland accounted for more than 97%,which were the main land use types of the study area.C...
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