Revisiting functional no-flow events in the Lower Yellow River

作     者：Rong Huang Tianhong Li Lianjun Zhao 

作者机构：School of Environment and EnergyPeking University Shenzhen Graduate School Department of Environmental EngineeringPeking University The Key Laboratory of Water and Sediment SciencesMinistry of Education Yellow River Institute of Hydraulic Research 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2016年第31卷第4期

页      面：351-359页

核心收录：

学科分类：081504[工学-水利水电工程] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 081501[工学-水文学及水资源] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0816[工学-测绘科学与技术] 

基　　金：supported by the National Natural Science Foundation of China[Grant number 50979003] Support from the Collaborative Innovation Center for Regional Environmental Quality is also acknowledged 

主　　题：Lower Yellow River Incoming water Critical discharge Functional no-flow events Severity level Linear regression 

摘      要：Functional no-flow is a topic of considerable interest in the research and management of the Yellow River.The operation of the Xiaolangdi Reservoir has been a source of concern regarding hydraulic characteristics and hydro-environmental responses.However,the impacts of the reservoir on functional no-flow events have not been reported to date.Using a complete set of daily hydrological data from four key hydrological stations for the past six decades and at three different temporal scales(year,wet season and dry season),the differences in incoming water and functional no-flow events have been compared before and after the Xiaolangdi Reservoir began operation,using two sets of critical runoff values that were summarized from previous studies.The results indicate that the frequency of functional no-flow events has decreased since the Xiaolangdi Reservoir began to operate,based on critical runoff or discharge values defined by long term hydrological records,and the frequency decreased more when the critical values defining the new situation were used.However,functional no-flow events still occurred in the Lower Yellow River,especially in the lower reach during the wet season.The degree of severity of the functional no-flow events and the magnitude and variation of daily discharge are strongly linearly related before and after the reservoir began operation,regardless of which set of critical values were used to identify the functional no-flow events.