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《Beijing Surveying and Mapping》 2008-01
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Slope-Extraction Analysis Of Northwest Droughty Area Based On DEM

LIJuan ZHAOJun (College Of Geography And Environment Science Of NWNU,GanSu Lanzhou 730000)  
This paper introduces DEM and the method of acquiring it and the method of calculating slope briefly.Through selecting the representative upland and flat of northwest droughty area as test region and building Digital Slope Model,this paper studies the variational rules of slope-extraction based on DEM with different resolution.We also analyze the error of slope-extraction.Which will be useful for northwest droughty area to construct its entironment that is related to slope.
【CateGory Index】: P208
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