摘要
针对岩溶石山区土壤侵蚀危险性评价问题,以广西平果县果化示范区为例,从分析土壤侵蚀的影响因子入手,建立了示范区的土壤侵蚀危险性评价模型。选取的评价因子为地形坡度、植被覆盖度和土层厚度等3个关键因子,并利用层次分析法确定了评价因子的相对权重,同时以ArcGIS 8 Desktop为平台,利用系统的空间分析工具,通过模型的空间关系识别和叠加分析,实现了示范区土壤侵蚀危险性评价。
In the light of the particularity of soil erosion in Karst mountainous region, by way of analyses of the factors affecting soil erosion, assessment model of dangerous soil erosion for Guohua ecological region, Pingguo County, has been established. The danger of soil erosion was mainly subject to the three factors of slope, degree of plant-cover and thickness of soil. Weighing set of factors was evaluated by means of analytical hierarchy process. By way of spatial analysis based on ArcGIS and identification of spatial relationship between the datasets , evaluation of the danger of soil erosion has been made and the results are analyzed.
出处
《安全与环境工程》
CAS
2005年第4期69-72,共4页
Safety and Environmental Engineering
基金
国家科技攻关项目(编号2004BA606A08和2002A901A03)资助
