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黄河流域径流情势区域变化特征分析
引用本文:王 未,张永勇.黄河流域径流情势区域变化特征分析[J].水资源与水工程学报,2020,31(3):59-65.
作者姓名:王 未  张永勇
作者单位:(1.中国科学院 地理科学与资源研究所 陆地水循环及地表过程重点实验室,北京 100101; 2.中国科学院大学,北京 100049)
基金项目:国家自然科学基金项目(41730645、41671024)
摘    要:针对黄河流域径流情势的区域差异性,采用Mann-Kendall法检测1960-2015年黄河源头和上、中、下游重点控制站点的径流情势指标的变化趋势,并采用变化范围法(RVA)评估其综合变化程度。结果表明:除源区黄河沿站外,源区唐乃亥站和上、中、下游各站点的大部分径流情势指标的变化为下降趋势,尤其是汛期大部分月份的径流量、高流量及其历时显著减少,另外上、中、下游各站点的年最大径流量也都显著减少;部分径流指标存在一定的区域差异性,如源区黄河沿站6、9月径流量和最大径流量显著增加、上游年最小径流量出现时间有所推迟、中游高流量频率显著减少,最大径流量的出现时间显著移前、下游几乎所有月份的径流量均显著减少,最大径流量的时序显著前移等;从综合变化程度来看,流域各站点的径流情势发生了全面改变,整体改变度在中度及以上,其中频率和历时的改变度最大。利津站的改变度最大,龙门站次之。

关 键 词:径流情势  M-K趋势检验  区域变化特征  改变度  黄河流域

Analysis on regional variation characteristics of flow regimes in the Yellow River Basin
WANG Wei,ZHANG Yongyong.Analysis on regional variation characteristics of flow regimes in the Yellow River Basin[J].Journal of water resources and water engineering,2020,31(3):59-65.
Authors:WANG Wei  ZHANG Yongyong
Abstract:To analyze regional differences of flow regimes in the Yellow River Basin, the Mann-Kendall test method was adopted to explore the temporal variation trend and Range of Variability Approach (RVA) was applied to assess hydrological alteration of metrics at all stations from 1960 to 2015. The results show that: Except for the Huangheyan station, most flow regime metrics of the Tangnaihai station and other stations in the upper, middle and lower reaches show a decreasing trend, especially monthly flow in the flood season, high flow and its duration. And the annual maximum flow in the upper, middle and lower reaches also decreases significantly; Some metrics also have regional differences. For example, the monthly runoff of June and September and maximum runoff of the Huangheyan station increase significantly; the occur time of minimum flow is delayed; the frequency of high flow in the middle reaches decreases significantly, and the occur time of maximum time is significantly advanced; the monthly runoff in downstream is significantly reduced, and the occur time of maximum time is significantly advanced; The flow regimes of hydrological stations in the Yellow River Basin have been completely changed. The overall degree of change is moderate and above, and the frequency and duration of changing degree are the greatest. Among them, Lijin Station has the largest changing degree; followed by Longmen Station.
Keywords:flow regimes  Mann-Kendall test  regional variation characteristics  changing degree  the Yellow River Basin
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