基于SWAT模型的阿克蘇河流域徑流模擬
[Abstract]:Aksu River Basin is located in the arid region of northwest China, which is affected by alpine climate, and its glacier and snow melt recharge have a great influence on the runoff change, the rational optimization of regional water resources and the protection of ecological environment. Combined with the unique features of snowmelt runoff and confluence in Aksu River Basin, the SWAT distributed hydrological model was used to simulate the monthly average runoff. Daily observation data from 7 meteorological stations in Aksu River Basin from 1980 to 2013 and monthly runoff data from 2000 to 2013 were collected at Arar Hydrological Station. Based on DEM data, land use data and soil data, A snowmelt runoff model suitable for Aksu River basin was established and the monthly average runoff was simulated. The results show that the ratio SWAT model has good applicability in Aksu River basin. The relative error RE of calibration period and verification period is less than 8%, and the decisive coefficient R2 and Nash-Sutcliffe efficiency coefficient NS are both higher than 0.82, which reach the evaluation standard of the model. It provides a reference for the establishment of distributed hydrological model in high altitude arid area.
【作者單位】: 西南林業(yè)大學(xué);
【基金】:國家自然科學(xué)基金項目(31460195,31660236)
【分類號】:P333.1
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