基于RS和GIS的土壤侵蚀量估算方法研究——以陕西省杏子沟流域为例  

Study on the Method of Soil Erosion Load Evaluation with RS and GIS: A Case in Xingzigou Basin, Shanxi Province

作　　者：朱连奇[1,2] 史学建[3] 彭红[3] 

机构地区：[1]河南大学环境与规划学院,河南开封475004 [2]河南大学黄河文明与可持续发展研究中心,郑州450003 [3]黄河水利科学研究院

出　　处：《河南大学学报（自然科学版）》2007年第6期601-606,共6页Journal of Henan University:Natural Science

基　　金：河南省自然科学基金项目(0311051700)

摘　　要：土壤侵蚀量的估算是土壤侵蚀研究的核心问题之一.本文以陕西省杏子沟流域为例,通过对影响土壤侵蚀地形、植被因子的研究,探讨了利用遥感技术和地理信息系统手段对土壤侵蚀量进行估算的方法和技术路线.在地形信息的获取方面,利用数字高程模型,派生出地形坡度、坡向、相对高度等要素;在植被覆盖度的提取中,采用遥感技术与非遥感手段,分析了植被类型对土壤覆被变化的指示作用.利用修正后的通用土壤侵蚀模式,模拟了小流域土壤侵蚀模数的空间差异,计算了土壤侵蚀总量,具有重要的理论意义和实践意义.Soil erosion load estimation is one of the key issues in soil erosion research. This paper studies the method and technique of soil erosion load estimation with RS and GIS, after analyzing the effects of landform and vegetation factors on soil erosion, on the basis of the study in Xingzigou basin, Shanxi Province. In order to get property data of landform, DEM was used, which generates gradient, slope aspect, relative elevation, etc.. In terms of collecting data of vegetation coverage, we have analyzed indicating function of vegetation type, which affects change in land cover with techniques of RS and others. With RUSLE, spatial variation of soil erosion modulus has been simulated, and calculated total load of soil erosion in small basin, which is of significance both in theory and practice.

关 键 词：数字高程模型 植被指数 土壤侵蚀 

分 类 号：S159[农业科学—土壤学]