摘要
SWAT是基于物理机制的分布式水文模型,能够准确地模拟及预测不同下垫面的径流量。应用SWAT模型对黄土丘陵区燕沟流域2002—2008年逐月径流量进行了模拟。结果表明,模拟率定期和验证期的Nash—Sutticliffe效率系数分别为0.76和0.81,相关系数r2分别为0.79和0.80。模型模拟精度高于评价标准(模拟效率Ens>0.5,r2>0.6),说明SWAT模型适用于黄土丘陵区小流域,模拟效果很好,可以用来监测预报黄土丘陵区的汛情,具有很强的实用性。
SWAT（soil and water assessment tool）,which is based on physical mechanisms,is a distributed hydrological model developed to simulate and predict runoff in different underlying surfaces accurately.The purpose of this study is to simulate the monthly runoff from Yangou Watershed in the loess hilly area from 2002 to 2008 by using SWAT model.Results indicated that the correlation coefficients in the period of calibration and validation were 0.96 and 0.98 with the Nash—Sutcliffe′s coefficient being 0.89 and 0.76,respectively.The precision of SWAT simulation is higher than the evaluating criterion（Ens〉0.5,r2〉0.6）,which demonstrates that SWAT is applicable to simulate the runoff from Yangou Watershed and practical in flood monitoring and forecasting in the loess hilly area.
出处
《水土保持通报》
CSCD
北大核心
2012年第3期141-144,4,共4页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目"黄土丘陵区小流域大气降水-土壤水-地下水转化行为机理研究"(41171421)
