摘要
基于大尺度陆面水文模型VIC模型,以确定性系数、相对误差为评判标准,以1961-1990年为研究期,对西江流域12个水文站的径流过程进行模拟分析。结果表明:在研究区参数率定期与验证期内,多年径流模拟效果良好,确定性系数较高,相对误差较小;以1975年为例,VIC模型能够基本再现天峨、武宣水文站年内日径流过程。可见VIC模型在西江流域基准年时期具有较好的适用性,可为流域径流预报以及区域未来气候变化对径流变化影响的研究奠定一定基础。
Based on a macro-scale land hydrological model,the runoff processes of twelve hydrological stations in Xijiang River basin are simulated by VIC model in the period of 1961-1990（baseline）.The model performance evaluation is based on Nash-Sutcliffe coefficient and relative error.The results show that the VIC model is able to simulate the runoff processes well in parameter calibration and validation periods,with highly Nash-Sutcliffe coefficient and lower relative errors.Meanwhile,VIC model can generally reproduce daily runoff process of Tian＇e and Wuxuan hydrological stations in 1975.Therefore,the VIC model applies to Xijiang River basin in baseline and it can be used to simulate the hydrological process and lay agood foundation for the research on the effect of climate change on runoff.
出处
《中国农村水利水电》
北大核心
2016年第4期43-45,49,共4页
China Rural Water and Hydropower
关键词
VIC模型
西江流域
径流模拟
确定性系数
相对误差
VIC model
Xijiang River basin
runoff simulation
Nash-Sutcliffe coefficient
relative error
