摘要
分布式流域水文模型SWAT(Soil and Water Assessment Tool)在土地利用/覆盖变化的水文响应研究领域得到了广泛运用,利用紫坪铺站与沙坝站实测流量数据对模型进行校准与验证。紫坪铺站校准期与验证期的ENS值分别为0.74、0.66,沙坝水文站校准期与验证期的ENS值分别为0.66、0.61。在黑水河下游流域建立三种干旱河谷扩大的情景模式,利用率定好的参数,模拟1978-1987年气象条件下的水文响应特征,结果显示干旱河谷区面积扩大导致径流输出值减小,同时引起蒸散发的增加,径流与蒸散发存在显著的负相关性。
The distributed hydrological model-SWAT（Soil and Water Assessment Tool） has got extensive application in the field of hydrological responses to land use changes.We used the observation runoff data of Zipingpu and Shaba stations to calibrate and validate the model.The values of ENS of Zipingpu station in calibration and validation phases were respectively 0.74、0.61,and 0.66、0.61 for Shaba station.We also established three kinds of scenario for the lower reaches of Heishui River watershed for arid valley expanded,based on calibrated parameters hydrological responses characters under 1978-1987 weather condition were researched.The results showed that the runoff will increase and evapotranspiration decrease with arid valley expanded,the runoff and evapotranspiration exist strong negative correlation.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2010年第8期79-84,共6页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金项目(40671132)
科技部973项目(2005CB422208)
科技部数据共享平台建设项目(2006DKA32300-08)资助
