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《Journal of Beijing Forestry University》 2001-05
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Simulating flow direction over raster-based hill-slopes and computing topographic parameters(LS) on GIS.

Wu Dongliang; Liu Pengju; Tang Xiaoming; Zhu Qingke; Zhu Jinzhao.College of Resources and Environment, Beijing For.Univ.,100083,P.R.China.  
This paper is for developing system of analyzing and simulating runoff pathway in hill\|slopes land and spatial distribution of soil erosion in small watershed in the Loess Plateau based on GIS processed in raster. By using View GIS, after the layers are processed in raster and the raster\|based database is setup, the research simulates flow direction over raster\|based hill\|slopes on DEM in a scale of watershed through the module of soil erosion developed for this research and computes the topographic parameters ( LS ) of USLE within the system. As a result, the output data and the spatial data of raster are stored in the database (DBF) for further use. The simulation maps of runoff pathway and distribution of soil erosion in watershed can be printed. This research is a base of developing system that programs and designs protection forestry systems in watershed in the Loess Plateau.
【Fund】: “九五”国家科技攻关项目“黄河中游防护林体系综合配置及功能持续提高技术研究与示范”( 96 0 0 7 0 1 0 1)的部分内容
【CateGory Index】: S715.3
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