基于SWAT模型的阿克苏河流域径流模拟
发布时间：2018-08-21 13:58
【摘要】：阿克苏河流域地处中国西北干旱区域,受高寒气候影响,其冰川和积雪融化补给对流域径流量变化、区域水资源合理优化及生态环境的保护影响重大。结合阿克苏河流域融雪径流的产流、汇流的独特之处,应用SWAT分布式水文模型对其月均径流进行了模拟研究。收集阿克苏河流域7个气象站点1980—2013年的逐日观测数据和阿拉尔水文站2000—2013年月均实测径流数据,基于DEM数据、土地利用数据、土壤数据,建立适合阿克苏河流域的融雪径流模型并进行月均径流的模拟。结果表明:SWAT模型在阿克苏河流域具有良好的适用性,校准期和验证期相对误差RE均在8%以内,决定性系数R2和Nash-Sutcliffe效率系数NS均高于0.82,达到了模型的评价标准,为高海拔干旱区建立分布式水文模型提供了参考。
[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.
【作者单位】： 西南林业大学;
【基金】：国家自然科学基金项目(31460195,31660236)
【分类号】：P333.1
本文编号：2195955
[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.
【作者单位】： 西南林业大学;
【基金】：国家自然科学基金项目(31460195,31660236)
【分类号】：P333.1
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