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SLOPE LENGTH AND ITS DERIVATION FROM DEMS

LI Dan;Environment Protection Insititue,Xi,an Research Insititue of China Cocal Technology &Engineering Croup Corp;  
Recently, the definitions of slope length in existence differ from each other because of the different fields and aspects in research. In this paper, a definition of slope length has been put forward according to water and soil conservation and regional terrain description.And the information differences have been analyzed among different geomorphologic areas and among different scale DEMs after the slope length is extracted relatively reasonably aided by Arc GIS.
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