摘要
以重庆市南岸区小流域为研究区域,采用美国通用土壤流失方程(USLE模型)为评价模型,以地理信息系统软件Arcview3.2为分析平台,并在Arcgis支持下,进行小流域土壤侵蚀评价。通过建立数字高程模型、TIN模型,数字化土地利用类型、植被类型、土壤类型等矢量图层,空间数据与属性数据连接,矢量、栅格数据转换,地图代数运算等操作步骤,获取基于栅格数据的小流域土壤侵蚀量和侵蚀强度,并提出了相应的治理措施。
Based on the platform of Arcview 3.2, Arcgis, soil erosion in the watershed of Nantm district in Chongqing is evaluated by using universal soil loss equation（USLE）. The factors related to soil erosion are inputted to Arcview in vector,which includes topography; landuse, vegetation type, soil type, and conversion of grid data. Then cell based soil loss and erasion intensity is calculated by using USLE based on map algebra. The measures how to gather soil erasion are given.
出处
《重庆师范大学学报（自然科学版）》
CAS
2005年第4期62-65,共4页
Journal of Chongqing Normal University:Natural Science
基金
重庆市南岸区水土保持规划课题
关键词
重庆市南岸区
水土流失
GIS
叠加分析
water and soil runoff
Nan＇an district
overlaying analysis
GIS
