摘要
为探究黄河源区不同时期、不同区间水沙变化特征,以黄河沿、吉迈、玛曲、唐乃亥4个水文站的长系列实测水沙资料为基础,将黄河源区划分为黄河沿以上、黄河沿—吉迈、吉迈—玛曲、玛曲—唐乃亥4个区间,相邻两个水文站实测水沙资料之差即为区间产流产沙量。使用Mann-Kendall检验法、累积距平法、t检验和小波分析法确定黄河源区水沙变化趋势、突变年份和变化周期,对各区间不同时期的水沙贡献率和变化程度进行分析,并使用R/S法确定各区间水沙未来一段时间内的趋势持续性。结果表明:除黄河沿—吉迈区间产流量呈上升趋势外,其余区间产流量均呈下降趋势,4个区间的产沙量均呈下降趋势。除玛曲—唐乃亥年均产沙量外,4个区间的年均产流产沙量均经历了1959—1989年到1990—2007年时期的下降和1990—2007年到2008—2017年时期的回升。各区间水沙变化均表现出在未来一段时间的反持续性。
In order to explore the characteristics of runoff and sediment changes in different periods and intervals in the source area of the Yellow River,based on the long series of measured runoff and sediment data from the four hydrological stations of Hangheyan,Jimai,Maqu and Tangnaihai,the source area of the Yellow River was divided into four sections of the upstream of Huagheyan,Huangheyan-Jimai,Jimai-Maqu and Maqu-Tangnaihai and the difference between the measured runoff and sediment data of two adjacent hydrological stations was the runoff and sediment yields of the interval.Mann-Kendall test,cumulative distance method,t-test and wavelet analysis were used to determine the trend,abrupt year and periodic change of runoff and sediment in the source area of the Yellow River.The contribution rate and change degree of water and sediment in different periods of each interval was analyzed.The R/S method was used to determine the trend persistence of runoff and sediment in each interval in the future.The results show that except for the runoff yield of Huangheyan-Jimai interval showing an upward trend,the runoff yield of the other intervals all shows a downward trend.The sediment yield of the four sections shows a downward trend.Except for the average annual sediment yield of Maqu-Tangnaihai interval,the average annual yields of runoff and sediment of the other intervals have experienced a decline from 1959-1989 to 1990-2007 and a rebound from 1990-2007 to 2008-2017.Changes in runoff and sediment in each section will show anti-sustainability in the future.
作者
董晓宁
田世民
张丽
DONG Xiaoning;TIAN Shimin;ZHANG Li(North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Henan Engineering Technology Research Center of Aquatic Eco-Environment,Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China;Key Laboratory of Yellow River Basin Ecological Environment Protection and Restoration in Henan Province,Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China)
出处
《人民黄河》
CAS
北大核心
2021年第6期21-27,共7页
Yellow River
基金
国家自然科学基金资助项目(51979120,51979012)
黄科院基本科研业务费资助项目(HKY-JBYW-2020-33,HKY-JBYW-2020-22)。
关键词
水沙变化
区间变化
突变年份
贡献率
黄河源区
runoff and sediment change
interval change
mutation year
contribution rate
source area of the Yellow River
