Assessment and selection of the best management practices for the Jinghe River Basin considering the comprehensive benefits of environmental costs
The Soil and Water Assessment Tool(SWAT)was used to evaluate the effectiveness of nine individual BMPs,as well as their various combinations-03 different scenarios in total-for reducing non-point source pollution(NPSP).A multi-attribute decision analysis method based on information entropy was also employed to assess the tradeoffs between the cost of implementing watershed BMPs and their effectiveness in controlling NPSP.The results reveals that the SWAT model was well-suited for simulating NPSP in the Jinghe River Basin,and the load reduction of NPSP varied greatly with different BMPs.Combined BMPs performed better than single BMPs in reducing the load of NPSP.The combination of reducing fertilizer application by 50％during agricultural cultivation,returning farmland with a slope greater than 25° to grassland,and planting grass in river channels was the preferred combined BMPs for the Jinghe River Basin with the highest comprehensive benefits value of environment and cost.
non-point sourcebest management practicescomprehensive benefits of environmental costsJinghe River Basin
万方数据
维普
