【摘要】 以河北太行山区为例,选择加权降雨量、坡度、坡长、沟谷密度、土壤质地、植被覆盖度、土地利用类型7个影响因子,应用层次分析法求出各因子权重,建立土壤侵蚀评价指标体系;利用RS和GIS技术,将影响因子分级并进行地图代数加权叠加,划分土壤侵蚀强度等级,揭示该区2000年土壤侵蚀强度分布情况。更多还原

【Abstract】 Taihang mountain area in Hebei province being taken as research area,in this paper the rainfall,slope,slope length,gully density,soil texture,vegetation fraction and land-using patterns were selected as seven influential factors,soil erosion evaluation index system was established with AHP method.With support of RS and GIS,the influential factors were graded and the weight of map algebra was used to devide the soil erosion intension grade and based on this,the distribution of soil erosion intension in 2000 was revealed.更多还原