【摘要】 以青海省湟水流域民和水文站以上流域为研究区,在GIS技术支持下,运用分布式水文模型SWAT(Soiland Water Assessment Tool)进行湟水流域天然径流的产流模拟,通过选用湟水流域1980-1997年相应的水文气象资料作为SWAT模型的输入数据,选用1980-1987年湟水流域出口民和站的年、月平均天然流量进行模型的参数率定,1989-1997年民和站的年、月平均天然流量进行模型的验证,采用相对误差(RE)、相关系数(R2)以及Nash-Suttclife模拟系数(Ens)作为模型适用性的评价系数,结果表明:SWAT模型对湟水流域长期天然径流变化过程模拟结果良好,较好地反映湟水流域水资源的变化过程,为研究湟水流域的水资源提供了模型支持。更多还原

【Abstract】 Supported by GIS technology,a distributed hydrological model-SWAT(Soil and Water Assessment Tool) is appliedto simulate the natural runoff of Huangshui River basin.For parameter calibration of the model,it is used the 1980～1987 data series of annual and monthly average natural runoffs from Minhe gauging station,located at the exit of Huangshui river basin,as well as meterological records in the basin.And the model is also tested by 1989～1997annual and monthly average natural runoffs data from Minhe station.According to the coefficient for judging the adaptability of the model,such as Relative Error(RE),Relative Coefficient(R2) and Nash-Suttclife simulating coefficient(Ens),the outcome of the SWAT model on simulating the dynamic process of natural runoff in long term is fairly good to reflect the water resources change of Huangshui River basin,thus a scientific basis is provided for further study on water resources of Huangshui River basin.更多还原