SWAT Literature Database for Peer-Reviewed Journal Articles

Title:A topography analysis incorporated optimization method for the selection and placement of best management practices 
Authors:Shen, Z., L. Chen and L. Xu 
Journal:PLOS ONE 
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URL (non-DOI journals): 
Broad Application Category:hydrologic & pollutant 
Primary Application Category:BMP assessment (genetic algorithm or similar optimization approach) 
Secondary Application Category:pollutant cycling/loss and transport 
Watershed Description:47.24 km^2 sub watershed of the Yulin River, a tributary of the Yangtze River in central China 
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Abstract:Best Management Practices (BMPs) are one of the most effective methods to control nonpoint source (NPS) pollution at a watershed scale. In this paper, the use of a topography analysis incorporated optimization method (TAIOM) was proposed, which integrates topography analysis with cost-effective optimization. The surface status, slope and the type of land usewere evaluated as inputs for the optimization engine. A genetic algorithm program was coded to obtain the final optimization. The TAIOM was validated in conjunction with the Soil and Water Assessment Tool (SWAT) in the Yulin watershed in Southwestern China. The results showed that the TAIOM was more cost-effective than traditional optimization methods. The distribution of selected BMPs throughout landscapes comprising relatively flat plains and gentle slopes, suggests the need for a more operationally effective scheme, such as the TAIOM, to determine the practicability of BMPs before widespread adoption. The TAIOM developed in this study can easily be extended to other watersheds to help decision makers control NPS pollution.