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| Identifying similar basins in ungauged catchments based on attribute and parameter sensitivity |
| Received:June 06, 2017 |
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| KeyWord:non-point source pollution;Soil and Water Assessment Tool(SWAT);parameter transfer method;similarity evaluation;Three Gorges reservoir |
| Author Name | Affiliation | E-mail | | CHEN Lei | School of Environment, Beijing Normal University, Beijing 100875, China | | | LI Shuang | School of Environment, Beijing Normal University, Beijing 100875, China | | | WANG Guo-bo | School of Environment, Beijing Normal University, Beijing 100875, China | | | SHEN Zhen-yao | School of Environment, Beijing Normal University, Beijing 100875, China | z.y.shen@163.com |
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| Abstract: |
| Identifying similar basins in ungauged catchments is a foundation of agricultural non-point source pollution simulation.Using Daning watershed as a case study,two methods were proposed to identify similar basins based on attribute and parameter sensitivity.The results indicated that the method to identify similar basins based on parameter sensitivity performed well.The precise degree of evaluation criteria levels has an impact on the result of attribute method.When the evaluation criterion levels are particularly precise,the identified results of the two methods tend to be consistent.Thus both the two methods could identify similar basins.However,the two methods have different applicability.In practical applications,combining the two methods would obtain more accurate results.The methods proposed in this paper will be of great importance in improving agricultural non-point source pollution simulation techniques and quantifying the impact of non-point source pollution. |
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