基于SWAT模型的阿克蘇河流域徑流模擬
發(fā)布時間:2018-08-21 13:58
【摘要】:阿克蘇河流域地處中國西北干旱區(qū)域,受高寒氣候影響,其冰川和積雪融化補給對流域徑流量變化、區(qū)域水資源合理優(yōu)化及生態(tài)環(huán)境的保護影響重大。結合阿克蘇河流域融雪徑流的產流、匯流的獨特之處,應用SWAT分布式水文模型對其月均徑流進行了模擬研究。收集阿克蘇河流域7個氣象站點1980—2013年的逐日觀測數(shù)據(jù)和阿拉爾水文站2000—2013年月均實測徑流數(shù)據(jù),基于DEM數(shù)據(jù)、土地利用數(shù)據(jù)、土壤數(shù)據(jù),建立適合阿克蘇河流域的融雪徑流模型并進行月均徑流的模擬。結果表明:SWAT模型在阿克蘇河流域具有良好的適用性,校準期和驗證期相對誤差RE均在8%以內,決定性系數(shù)R2和Nash-Sutcliffe效率系數(shù)NS均高于0.82,達到了模型的評價標準,為高海拔干旱區(qū)建立分布式水文模型提供了參考。
[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.
【作者單位】: 西南林業(yè)大學;
【基金】:國家自然科學基金項目(31460195,31660236)
【分類號】:P333.1
本文編號: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.
【作者單位】: 西南林業(yè)大學;
【基金】:國家自然科學基金項目(31460195,31660236)
【分類號】:P333.1
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