Application of SWAT Model for Runoff Calculation in Small Watershed of Zhejiang Province
To verify the applicability of the SWAT model in runoff calculation in small watershed of Zhejiang province,this paper collects daily records for the past 20 years from Wenling meteorological station,topographic map,land use and soil data,and establishes the SWAT model of the Human reservoir by usin...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
| Subjects: | |
| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.12.005 |
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| Summary: | To verify the applicability of the SWAT model in runoff calculation in small watershed of Zhejiang province,this paper collects daily records for the past 20 years from Wenling meteorological station,topographic map,land use and soil data,and establishes the SWAT model of the Human reservoir by using the SWAT2012 module loaded with Arcgis 10.2 software.In calibration period (1999—2008),R<sup>2</sup> (correlation coefficient) is 0.89 and E<sub>NS</sub> (Nash-Sutcliffe efficiency) is 0.88;in validation period (2009—2018),R<sup>2</sup> is 0.93 and E<sub>NS</sub> is 0.91.With an error of 1.3%,the simulated annual average flow is 0.8 m<sup>3</sup>/s and the observed flow is 0.79 m<sup>3</sup>/s,which indicating a high accuracy of the model.The sensitivity test of input parameters shows that the SOL_AWC.sol (available water capacity of soil) and CN2.mgt (runoff coefficient of different land use) are significant to simulated results.The model can be further used for forecasting the flood process and peak flow of Human reservoir,as well as optimizing the reservoir operation scheme and formulating the protection program of water source. |
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| ISSN: | 1001-9235 |