黄河源唐乃亥水文站水沙序列重建与变化规律研究  

Reconstruction of Runoff-sediment Sequences and Its Change Law at Tangnaihai Hydrometry Station in Yellow River Source Area

作　　者：刘晶[1] 吉立[1] 李志威[1,2] 余国安 田世民[4] LIU Jing;JI Li;LI Zhiwei;YU Guoan;TIAN Shimin(School of Hydraulic Engineering,Changsha University of Science ＆ Technology,Changsha 410114,China;Key Laboratory of Water-Sediment Sciences and Water Disaster prevention of Hunan Province,Changsha 410114,China;Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100104,China;Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China)

机构地区：[1]长沙理工大学水利工程学院,湖南长沙410114 [2]水沙科学与水灾害防治湖南省重点实验室,湖南长沙410114 [3]中国科学院地理科学与资源研究所,北京101004 [4]黄河水利科学研究院,河南郑州450003

出　　处：《水文》2018年第5期34-41,共8页Journal of China Hydrology

基　　金：国家自然科学基金项目(91547112;91647118);湖南省教育厅优秀青年项目(16B010);水利部黄河泥沙重点实验室开放课题基金项目(2017005);黄河水利科学研究院院所长基金项目(HKY-JBYW-2016-03)

摘　　要：选用泽库气象站(1959~2011年)的降水量、唐乃亥水文站(1956~2011年)的年径流量、年输沙量分别与相邻位置的δ18O测定序列构造相关关系,建立以10a为滑动期的降水量变化曲线、以5a和10a为滑动期的年径流量/年输沙量变化曲线(公元192~2003年),研究千年尺度的降水量和水沙变化规律。结果表明:除了以5a为滑动期的唐乃亥年输沙量率定方程外,其它拟合方程的R2均大于0.6,相关性较高。黄河源的年径流量总体呈减小的趋势,但年输沙量变化趋势大致相同,其变化主要与降水量有关。以唐乃亥水文站为代表,1800a尺度上黄河源的年径流量/年输沙量的趋势变化可分为9个阶段,且5次呈增大趋势,4次呈减少趋势,表明水沙序列的长期变化呈多阶段性特征。The precipitation data from the Zeku Meteorology Station during 1959-2011, annual runoff and sediment discharge data from the Tangnaihai Hydrometry Station during 1956-2011 were taken to established correlation with δ18O determination sequences of the adjacent position （Wanxiang Cave in Gansu Province）. This paper studied the changes of precipitation and runoff-sediment sequence in the millennium scale which based on the establishment of the variation curves of precipitation with 10-year moving average, and the annual runoff and sediment discharge with 5-year moving average and 10-year moving average. The results show that R2 values of the fitting equations are all greater than 0.6 except the calibration equation of annual sediment discharge at the Tangnaihai Hydrometry Station with 5-year moving average, and the correlation is relatively high. The annual runoff of the Yellow River source is decreasing while the trend of annual sediment discharge is approximately the same, and its changes are mainly related to precipitation. At the Tangnaihai Hydrometry Station, the changes of annual runoff and sediment discharge in the 1800a scale can be divided into 9 stages, of which 5 stages show an increasing trend and the other 4 stages show a decreasing trend.

关 键 词：黄河源 径流量 输沙量 水沙重建 气候变化 相关分析 

分 类 号：TV141[水利工程—水力学及河流动力学]