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投稿时间：2008-02-29 修订日期：2009-04-23
投稿时间：2008-02-29 修订日期：2009-04-23
中文摘要: 应用SWAT（Soil and Water Assessment Tool）分布式水文模型对汉江流域1971—2000年30
年逐月径流进行了模拟。结果表明：模型模拟精度高于评价标准（模拟效率Ens>0.5，
相关系数r2>0.6），SWAT模型适用于汉江流域的径流模拟；水量平衡各要素中，30年
月、年平均蒸散发量、地表径流量、土壤对地下水补给量、土壤含水变化量、地下水侧流量
分别占降水量的55.97％、25.88％、17.64％、0.26％、0.25％，蒸散发是该流域水量的主
要输出项；各月30年平均降水量变化趋势与地表径流量变化趋势较一致，而与基流量变化趋
势一致性较差；30年流域降水量年变化趋势与地表径流量、基流量的变化趋势较一致；30年
月、年地表径流量对降水的响应程度高于基流。
Abstract:Monthly runoff in the Hanjiang River Basin from 1971 to 2000 was simulated by us
ing the SWAT model. The results show that SWAT simulation precision is high
er than the criterion(Ens>0.5，r2>0.6), and the SWAT model is appropriate
to simulate the runoff in the Hanjiang River Basin. Among the essentials of wate
r balance, the percentages of 30a monthly/annual mean evapotranspiration, surfa
ce runoff, percolation, soil water, lateral flow to the amount of rainfall are 5
5.97%, 25.88%, 17.64%, 0.26%, and 0.25% respectively, and evapotranspiration is
the main output item of rainfall. The trend of monthly mean rainfall from 1971 t
o 2000 is in accordance with the trend of surface runoff in Hanjiang RiverBasin
, but is not in accordance with base flow; the trend of annual mean rainfall from 1971 to 2000 is in accordance
with the trend of surface runoff and base flow; the 30a monthly/yearly surface
runoff’s response to rainfall is higher than base flow.
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基金项目:中国气象局气候变化专项“未来50年南水北调中线水源区水资源变化分析”（C
CSF2007 22）
引用文本：
夏智宏,周月华,许红梅,2009.基于SWAT模型的汉江流域径流模拟[J].气象,35(9):59-67.
Xia Zhihong,Zhou Yuehua,Xu Hongmei,2009.Runoff Simulation in Hanjiang River Basin Based on SWAT Model[J].Meteor Mon,35(9):59-67.
夏智宏,周月华,许红梅,2009.基于SWAT模型的汉江流域径流模拟[J].气象,35(9):59-67.
Xia Zhihong,Zhou Yuehua,Xu Hongmei,2009.Runoff Simulation in Hanjiang River Basin Based on SWAT Model[J].Meteor Mon,35(9):59-67.