延河流域水文要素变化特征分析  

Analysis of Hydrological Element Variation Characteristics in the Yanhe River Basin

作　　者：吴凡 徐尧 夏帆 WU Fan;XU Yao;XIA Fan(Management Office of Simashan Yangtze Diversion Project in Anhui Province,Hexian 238251,China;North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]安徽省驷马山引江工程管理处,安徽和县238251 [2]华北水利水电大学,河南郑州450046 [3]黄河勘测规划设计研究院有限公司,河南郑州450003

出　　处：《水资源开发与管理》2025年第2期13-19,共7页Water Resources Development and Management

摘　　要：为了解延河流域水资源变化情况,本文基于Mann-Kendall趋势检验法、小波分析法,以汛期6—9月和非汛期10月至次年5月两个时期,以及春、夏、秋、冬四季,分析延河流域1956—2022年的降水、径流变化特征。结果表明,延河流域降水量、径流量年内分配极不均匀,峰值均出现在7—8月,分别占全年的43.54%和46.05%;季节上降水量和径流量都表现为:夏季>秋季>春季>冬季;年际变化上,降水量和径流量均呈减少趋势;季节变化中,春、夏两季的降水量为不显著减少趋势,秋、冬两季降水量为不显著增加趋势,春、秋两季的径流量呈不显著减少趋势,夏季径流量呈显著减少趋势,冬季径流量呈显著增加趋势;延河流域降水量在1969年发生突变,径流量减少趋势突变点为1998年。研究结果可为进一步了解延河流域水文变化情况提供参考。To understand the changes in water resources in the Yanhe River Basin,this paper analyzes precipitation and runoff variation characteristics in the basin from 1956 to 2022 using the Mann-Kendall trend test and wavelet analysis.The study divides the year into two periods:the flood season(June to September)and the non-flood season(October to May of the following year),as well as four seasons:spring,summer,autumn,and winter.The results show that both precipitation and runoff in the Yanhe River Basin are unevenly distributed throughout the year,with peak values occurring in July and August,accounting for 43.54%and 46.05%of the annual totals,respectively.In terms of seasons,the distribution of precipitation and runoff is as follows:summer>autumn>spring>winter.Annually,both precipitation and runoff exhibit a decreasing trend.Seasonally,precipitation in spring and summer runoff showing a not significantly decreasing trend,while precipitation in autumn and winter runoff showing a not significantly an increasing trend.Runoff in spring and autumn is not significantly decreasing,with summer runoff showing a significant decrease and winter runoff showing a significant increase.A sudden change in precipitation occurred in 1969,and the turning point for the decreasing trend of runoff was in 1998.The findings provide valuable insights into the hydrological changes in the Yanhe River Basin and can serve as a reference for further studies on the basin’s hydrological variations.

关 键 词：降雨径流 MANN-KENDALL检验 小波分析 时空变化 延河流域 

分 类 号：P333[天文地球—水文科学]