SWAT模型在黄土丘陵区燕沟流域的应用研究  

Application of SWAT Model to Yangou Watershed in the Loess Hilly Area

作　　者：李星[1] 徐学选[2] 宇苗子[1] 李波[3] 赵娇娜[2] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨凌712100 [2]西北农林科技大学水土保持研究所,陕西杨凌712100 [3]海南省环境科学研究所,海南海口570206

出　　处：《水土保持通报》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)

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.

关 键 词：SWAT 黄土丘陵区 径流模拟 

分 类 号：S157.1[农业科学—土壤学]