1970—2021年赤水河径流特性分析  

Runoff Characteristics of Chishui River From 1970 to 2021

作　　者：李长江[1] 方小宇[1] 安美运 彭芸 LI Changjiang;FANG Xiaoyu;AN Meiyun;PENG Yun(Guizhou Procincial Water Conservancy Research Institute,Guiyang 550002,China)

机构地区：[1]贵州省水利科学研究院,贵州贵阳550002

出　　处：《海河水利》2025年第4期26-31,共6页Haihe Water Resources

基　　金：贵州省科技厅科技支撑项目(黔科合支撑[2022]一般167);贵州省水利厅科技项目(kt202319)。

摘　　要：基于赤水河水文站1970—2021年径流系列资料,采用Spearman秩次相关检验、Mann-Kendall检验、有序聚类分析等方法对赤水河径流特性及趋势进行分析研究,以期为赤水河流域水资源的科学管理、开发利用、生态环境保护等提供参考。研究结果显示,赤水河年、汛期和枯水期径流均呈现不同程度的不显著减少趋势。根据MannKendall检验及有序聚类分析,2000年为赤水河流域年径流减少的突变点,2002年为汛期径流减少的突变点,1992年为枯水期径流减少的突变点。从小波分析结果看,赤水河年径流主要有56、42、31 a 3种时间尺度震荡周期;汛期径流主要有56、41、31 a 3种时间尺度震荡周期;枯水期径流主要存在55、44、10~12 a 3种时间尺度震荡周期。The runoff characteristics and trends of the Chishui River was analyzed using Spearman rank correlation test,Mann Kendall test,and ordered cluster analysis based on the runoff series data from the Chishui River hydrological station from 1970 to 2021.To aim at for providing reference for the scientific management,development,and utilization of water resources,as well as the protection of the ecological environment in the Chishui River Basin.The research results show that the annual,flood season,and dry season runoff of the Chishui River all show varying degrees of insignificant decreasing trends.The year 2000 was the sudden change point of annual runoff reduction in the Chishui River Basin,2002 was the sudden change point of flood season runoff reduction,and 1992 was the sudden change point of dry season runoff reduction.The annual runoff in the Chishui River Basin mainly has three time scale oscillation periods of 56,42,and 31 years;There are three main time scale oscillation periods for flood season runoff:56,41,and 31 years;During the dry season,there are three main time scale oscillation periods for runoff:55,44,and 10~12 years.

关 键 词：赤水河 径流特性 演变趋势 

分 类 号：TV121[水利工程—水文学及水资源]