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Research on spatial-temporal features of land use based on 3S——Exapmple for northern new city of Chongqing

XUE Li-xia~(1,2),WANG Zuo-cheng~(1,2),LI Yong-shu~(2),WNAG Lin-lin~(1)(1.Chongqing University of Posts and Telecommunications,Chongqing 400065,P.R.China;2.School of Civil Eng,Southwest Jiaotong University,Chengdu 610031,P.R.China)  
Based on the 3s(GIS、RS、GPS) technique,with the support of mathematics models,this paper researches into the spatial_temporal features of land use,takes land use in northern new city of Chongqing for example, dynamicaliy analyzes the land use type,land use degree,city expanding,etc.and get the good results,provide a new guideline and method for land use/land cover spatial_temporal changes research.
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