【摘要】：黃河源區(qū)(唐乃亥水文站以上)多年平均徑流量約200×108m3,占黃河天然徑流量的34%,是黃河流域的主要產(chǎn)流區(qū)和重要的水源涵養(yǎng)區(qū).黃河源區(qū)歷史汛期徑流的變化一直是學界關(guān)注熱點.本文以數(shù)字流域模型研究對象,旨在提高黃河源區(qū)歷史汛期徑流模擬結(jié)果精度.首先對比評價了黃河源區(qū)多源降水數(shù)據(jù),相比于地面雨量站數(shù)據(jù)和CMORPH降水數(shù)據(jù),CMORPH地面融合降水數(shù)據(jù)在黃河源區(qū)分辨率較高,精度可靠.其次集成了適用于黃河源區(qū)的大尺度、高分辨率的數(shù)字流域模型,利用融合降水數(shù)據(jù),完成了黃河源區(qū)汛期徑流的模擬.將2008~2012年汛期劃分為率定年和驗證年,徑流模擬結(jié)果顯示,率定和驗證期逐日徑流過程的Nash-Sutcliffe效率系數(shù)較高,汛期徑流量符合良好,證明了數(shù)字流域模型在黃河源區(qū)的適用性,有利于黃河源區(qū)水資源分布進一步的評估和管理.
[Abstract]:The annual average runoff in the source area of the Yellow River (above Tangnahe Hydrological Station) is about 200 脳 108 m3, accounting for 34% of the natural runoff of the Yellow River. It is the main runoff producing area and the important water conservation area in the Yellow River Basin. The change of historical flood season runoff in the source area of the Yellow River has been a hot spot in academic circles. The purpose of this paper is to improve the accuracy of runoff simulation in the historical flood season of the source area of the Yellow River. Firstly, the multi-source precipitation data in the source region of the Yellow River are compared. Compared with the surface rainfall station data and the CMORPH precipitation data, the CMORPH precipitation data have high resolution and reliable accuracy in the source region of the Yellow River. Secondly, a large scale and high resolution digital watershed model suitable for the source region of the Yellow River is integrated, and the runoff simulation of flood season in the source area of the Yellow River is completed by using the combined precipitation data. The flood season from 2008 to 2012 is divided into two years: rate dating and verification. The results of runoff simulation show that the Nash-Sutcliffe efficiency coefficient of daily runoff is higher and the runoff in flood season is in good agreement with each other, which proves the applicability of the digital watershed model in the source area of the Yellow River. It is beneficial to the further evaluation and management of the distribution of water resources in the source area of the Yellow River.
【作者單位】： 清華大學水沙科學與水利水電工程國家重點實驗室;青海大學水利電力學院;三江源協(xié)同創(chuàng)新中心;
【基金】：國家自然科學基金(51459003) 水利部公益性行業(yè)科研專項經(jīng)費項目(201501028) 國家電網(wǎng)公司項目(52283014000T)
【分類號】：P333

【參考文獻】

相關(guān)期刊論文 前9條

1 沈艷;潘e，

本文編號：2136534