天津师范大学学报（自然科学版）2025，Vol.45Issue(1)：44-51,8.DOI:10.19638/j.issn1671-1114.20250107
1957-2007年汾河上游径流变异特征及其影响因素
Characteristics of runoff variations and their influencing factors in the upper reaches of Fenhe River from 1957 to 2007
摘要
Abstract
The variation points of the runoff controlled by the Jingle Station in the upper reaches of the Fenhe River were diag-nosed at the annual and seasonal scales by diagnostic system for hydrological variation.Multivariate analysis was used to calcu-late the contribution of precipitation,potential evapotranspiration,and human activities to the runoff variation.The relation-ship between runoff,precipitation,potential evapotranspiration,and the El Nino-Southern Oscillation(ENSO)phenomenon was studied by wavelet analysis based on the analysis of the basin variation characteristics.The results showed that:① The variation point of runoff in the upper reaches of the Fenhe River occurred in 1970,and there is a significant downward trend in runoff during the studied period;② The contribution rates of precipitation and potential evapotranspiration to runoff variation were 38.46％and-24.73％,respectively;③ The sensitivity of runoff to influencing factors varies in different seasons,and po-tential evapotranspiration had the greatest impact on runoff in spring,while runoff is mainly influenced by human activities in summer;④ The relationship between precipitation,potential evapotranspiration,and ENSO phenomena underwent significant changes before and after the variation point.关键词
汾河上游/径流变异/趋势变异诊断/厄尔尼诺-南方涛动/相关分析Key words
upper reaches of Fenhe River/runoff variation/trend variability diagnosis/El Nino-Southern Oscillation(ENSO)/correlation analysis分类
地球科学引用本文复制引用
陈之鸿,郝慧清,张琴琴,王凯妍,赵娟,郝永红..1957-2007年汾河上游径流变异特征及其影响因素[J].天津师范大学学报（自然科学版）,2025,45(1):44-51,8.基金项目
国家自然科学基金资助项目(42072277,41272245,40972165). （42072277,41272245,40972165）
