文献类型：期刊文献

英文题名：Assessing soil erosion risk in the Hilly-gullied area: A case study of Luoyugou watershed in Tianshui, Loess Plateau, North China

作者：Shen, Qi[1]

机构：[1] Institute of Economic Development, East China University of Science and Technology, Shanghai, China

年份：2011

外文期刊名：Proceedings - 2011 19th International Conference on Geoinformatics, Geoinformatics 2011

收录：EI(收录号：20113614308107)

语种：英文

外文关键词：Landforms - Water conservation - Risk assessment - Uncertainty analysis - Sediments - Soil conservation - Watersheds - Soils

摘要：Nowadays using uncertainty inference to predict the risk of soil erosion is a new development tendency. This paper attempted to simulate the distribution of soil erosion risk in a small watershed named Luoyugou (Tianshui, North China) by an uncertainty inference model based on Subjective Bayes and GIS. The results indicated that: (1) Land cover and slope are the fundamental factors to control spatial pattern of soil erosion risk in Luoyugou watershed, and other factors, such as soil species, have less impact; (2) The areas which have the highest risky of soil erosion are those covered without plants, sloped closer to 30°-35° and distributed ith Heilu soil which distributed in the slope region of upper and middle reaches. But the lowest-risky areas are always covered with more plants, slope of hillside less than 10° and with brown-soil in the right-shore watershed. (3) Practice proves that soil and water conservation measures and returnig farmland to forest policy have positive significance to reduce soil erosion risk in study area. ? 2011 IEEE.