广东水利水电Issue(6)：37-41,49,6.
SWAT分布式模型参数不确定性分析在张家口洋河流域中的应用研究
Application of SWAT Distributed Model Parameter Uncertainty Analysis in Zhangjiakou Yanghe River Watershed
米骁伟1
作者信息
- 1. 河北省张家口水文勘测研究中心,河北 张家口 075000
- 折叠
摘要
Abstract
In order to evaluate the hydrological resources of a large watershed and analyze the impact of the independent and interactive effects of hydrological model parameters on simulation results,a distributed hydrological model based on ArcSWAT was established for the Yanghe River Basin in Zhangjiakou.The GLUE algorithm was used to analyze the uncertainty of hydrological model parameters,and the goodness of fit,coefficient of certainty were selected to quantitatively evaluate the impact of parameters on simulated flow.The results show that parameter uncertainty has a significant impact on the modeling result,and the SCS runoff curve coefficient has the most significant and sensitive impact on the hydrological process of the Yanghe River Basin in Zhangjiakou;The sensitive parameters with t-Stat greater than 10 are SCS runoff curve coefficient,soil evaporation compensation coefficient,average slope length,and base flow regression coefficient.The t-Stat of the other 8 parameters is less than 10,and the P-value is greater than 0.10;The trend of simulated values is consistent with the measured values,with the goodness of fit is 0.89 and coefficient of certainty is 0.75;The the goodness of fit during the validation period is 0.83,and the coefficient of certainty is 0.69.The SWAT distributed hydrological model has shown good performance in both the periodic and validation periods.关键词
不确定分析/SWAT模型参数/洋河流域/张家口/GLUE算法Key words
uncertainty analysis/SWAT model parameters/Yanghe River Basin/Zhangjiakou/GLUE algorithm分类
地球科学引用本文复制引用
米骁伟..SWAT分布式模型参数不确定性分析在张家口洋河流域中的应用研究[J].广东水利水电,2025,(6):37-41,49,6.
