海河水利Issue(4)：26-31,6.DOI:10.3969/j.issn.1004-7328.2025.04.006
1970-2021年赤水河径流特性分析
Runoff Characteristics of Chishui River From 1970 to 2021
摘要
Abstract
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Key words
Chishui River/runoff characteristics/evolution trend分类
水利科学引用本文复制引用
李长江,方小宇,安美运,彭芸..1970-2021年赤水河径流特性分析[J].海河水利,2025,(4):26-31,6.基金项目
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) （黔科合支撑[2022]一般167）
