A Novel Method for Watershed Best Management Practices Spatial Optimal Layout under Uncertainty

Watershed Best management Practices (BMPs) spatial optimal layout would be affected by uncertainty, and there are still three problems which worthy of studying in the present studies watershed BMPs under uncertainty: (1) how to integrate multiple uncertainties optimization model effectively; (2) avoid subjective weight multi-objective uncertainty model; (3) develop more elastic schemes for impact. To solve mentioned problems, this study takes Zhegao river watershed, China as an example, interval stochastic fuzzy fractional programming (ISFFP) integrated with SWAT hydrology is applied reduce non-point source (NPS) pollution. The result shows that ISFFP method could effectively, adapted different types also has seldom been used layout, worth popularization.