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[1]ZHU Li,QIN Fu-cang,YAO Yun-feng,et al.Research of Sensitivity Analysis Module of SWAT Model in Middle-scale Watershed—A Case Study of Hongmenchuan Watershed in Miyun County[J].Research of Soil and Water Conservation,2011,18(01):161-165.

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Research of Sensitivity Analysis Module of SWAT Model in Middle-scale Watershed—A Case Study of Hongmenchuan Watershed in Miyun County

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 01 Page number: 161-165 Column: Public date: 2011-02-20

Title:: Research of Sensitivity Analysis Module of SWAT Model in Middle-scale Watershed—A Case Study of Hongmenchuan Watershed in Miyun County

Author(s):: ZHU Li^1,2, QIN Fu-cang², YAO Yun-feng², ZHANG Li-juan^2,3, YU Xin-xiao⁴; 1. Department of Resource and Environment, Baotou Normal College, Baotou, Inner Mongolia 014030 China;
2. College of Ecological and Environmental, Inner Mongolia Agricultural University, Hohhot 010019, China;
3. Soil and Water Conservation Station in Xilinguole League, Xilinhaote, Inner Mongolia 026000, China

Keywords:: SWAT model; the sensitivity analysis; parameters; Yunzhou reservoir basin; middle-scale watershed

CLC:: P333.9

DOI:: -

Abstract:: The soil and water assessment tool (SWAT) is a physically-based continuous event hydrologic model. This paper mainly introduces the sensitivity analysis model of the module AVSWAT 2005 principle, application and verified in Hongmenchuan watershed. Based on the sensitivity analysis, the main parameters affecting the simulated values in this watershed were determined, the CN₂、the SOL_AWC and the SOL_K were the significant and sensitive parameters. Adjusting the parameters based on the analyzed results, using 1991 to 2006 continuous simulations on monthly runoff, satisfied simulation results were obtained with the relative error was under 15%, Nash-suttcliffes coefficient (Ens) more than 0.7, and correlation coefficients R² exceeding 0.8, SWAT model of Yunzhou reservoir basin simulation result is good. Therefore, the application of sensitivity analysis module of SWAT model in soil-gravel area in middle-scale watershed of smaller area has improved the accuracy of simulation dramatically.

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