Distributed soil erosion model for single storms based on GIS:A case study in the Wangjiagou Catchment in Western Shanxi Province
LIU Jian-Jin-；Ca-Jiang-Guo-；Fang-Hai-Yan
1.Linyi Normal University,276005,Linyi,Shandong;2.Institute of Geographical Sciencesand Natural Resources Research,Chinese Academy of Science,100101,Beijing: China
Abstract：According to field observations and simulated rainfall data in Yangdaogou Catchment,the relationship between the runoff and sediment yield on the hill slope and gully was analyzed,and then the Yangdaogou soil erosion model was established.With GIS,40 hill slopes,40 gullies,and 40 sub-geomorphic units were obtained though dividing Wangjiagou Catchment.After comparison the six main factors that influencing soil erosion,including rainfall,relief,vegetation coverage,tillage measures,control measures,and soil in the context of spatial scale,in Yangdaogou Catchment and other sub catchments of Wangjiagou,the calibrating indexes was obtained.Combined with the sediment delivery ratio of the main gully of Wangjiagou,a distributed soil erosion model for single storms based on GIS was established.The model was validated by the 22 natural rainfall data from 1963 to 1968 in the Wangjiagou Catchment,the prediction precision of the model is reached 55%.
刘前进1；蔡强国2；方海燕2. 基于GIS的次降雨分布式土壤侵蚀模型构建——以晋西王家沟流域为例[J]. 中国水土保持科学, 2008, 6(5): 21-26.
LIU Jian-Jin-；Ca-Jiang-Guo-；Fang-Hai-Yan. Distributed soil erosion model for single storms based on GIS:A case study in the Wangjiagou Catchment in Western Shanxi Province. SSWCC, 2008, 6(5): 21-26.
2008, Vol. 6 
