基于DEM的小流域坡长计算方法研究

Study on Calculation of Slope Length Based on DEM in the small Watershed

基于坡地水文学、GIS空间分析原理、流域侵蚀地貌学等理论方法,对小流域坡长提取及不同坡长计算方法进行对比研究。并基于格网DEM分析目前国内外坡长的不同算法,来揭示坡长在小流域的空间分布规律。

The paper study the extraction of slope length in small watershed and compare the different methods of calculation of slope length based on Slope hydrology,the GIS spatial analysis principle and watershed geomorphology.And analyzing the current domestic and foreign different slope length algorithms in DEM,the paper reveals the spatial distribution of the slope length in the small watershed.