水土保持学报2002，Vol.16Issue(3)：1-4,4.
黄土区小流域土壤侵蚀系统模拟的研究
Study on Soil Erosion Systems Simulation of Small Watershed in Loess Area
摘要
Abstract
The loess plateau in China is one of the most serious soil erosion areas. And the soil erosion volume of watershed is an important index, which is useful to evaluate correctly the comprehensive management, and weigh the benefit of the comprehensive management. It is also the premise and foundation of arranging the measures of soil and water conservation and conducting watershed management and planning. Based on this, we deemed that simulating the soil erosion systems of small watershed in loess area based on computer is essential. The computer-based model of soil erosion of watershed in loess area was built. It is loosely coupled with geographical information system. It makes use of DEMs function of providing the topographical feature, and then conducts the hydrological analysis of runoff in watershed. On the basis of this analysis, the USLE sediment model and the routing model were applied to the hydrological analysis of runoff. And then the distributed watershed soil erosion simulation model was built. Using this model, the soil erosion volume with different temporal and spatial characteristic can be computed. At last the research achievement applied to Huangjiaercha small watershed of Xiji county in Ningxia Hui Autonomous region. Additionally, the model system was verified to have a definite reliability. This will further heighten the level of small watershed comprehensive management of loess plateau in China.关键词
黄土区/小流域/土壤侵蚀/地理信息系统/单元格Key words
loess area/small watershed/soil erosion/geographical information system/cell分类
农业科技引用本文复制引用
李清河,孙保平,孙立达..黄土区小流域土壤侵蚀系统模拟的研究[J].水土保持学报,2002,16(3):1-4,4.基金项目
国家"九五"科技攻关项目"宁南缓坡丘陵区农牧综合发展研究"(96-004-05-10) （96-004-05-10）
