基于GIS和USLE的土壤侵蚀定量分析研究——以四川省洪雅县为例  

Quantitative Analysis of Soil Erosion Based on GIS and USLE——Taking Hongya County of Sichuan Province as a Case Study

作　　者：周湘山[1] 孙保平[1] 李锦荣[1] 赵岩[1] 钟晓娟[1] 王引乾[1] 冯磊[1] 邱一丹[1] 

机构地区：[1]北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京100083

出　　处：《水土保持研究》2011年第4期5-10,15,共7页Research of Soil and Water Conservation

基　　金：国家林业局林业公益性行业科研专项经费项目"南方退耕还林工程建设效益监测评价研究"(201004018)

摘　　要：以四川省洪雅县为研究对象,运用GIS方法和USLE土壤侵蚀模型,分析与评价该区域的土壤侵蚀状况。结果表明:洪雅县土地利用单元的侵蚀强度存在显著差异,不同的土地利用类型与土壤侵蚀强度强弱有较为密切的联系。根据洪雅县的土地利用和自然经济状况,洪雅县可分为北部轻度侵蚀区、中部微度侵蚀区和西南部无明显侵蚀区3类土壤侵蚀强度类型区,并针对各区不同的情况模拟制定了相应的水土保持治理措施,为当地政府开展水土保持规划工作提供科学依据。Taking the Hongya County of Sichuan Province as a case,based on the technology of geographical information system and the model of soil erosion degree,the status of soil erosion was analyzed and evaluated.Results showed that：there were significant differences of the land use units in Hongya County and the intensity of soil erosion was close connection with the different land use types.According to the land use status and the natural and economic conditions,the status can be divided into three intensity zones of soil erosion,which are slight erosion of northern area,micro-degree erosion of central area and no significant erosion of southwest area;corresponding water conservation measures were made for various different situations which can provide scientific basis for soil and water conservation planning for the local government.

关 键 词：土壤侵蚀 土壤流失方程 GIS 

分 类 号：S157.1[农业科学—土壤学] TP79[农业科学—农业基础科学]