近50年乌江流域降雨演变趋势研究  

Study on rainfall evolution trend in Wujiang River Basin in recent 50 years

作　　者：李长江[1] 吴海宽 付杰[1] LI Changjiang;WU Haikuan;FU Jie(Guizhou Provincial 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：《水利建设与管理》2022年第11期73-78,共6页Water Conservancy Construction and Management

基　　金：贵州省水利厅科技支撑项目(KT201816)。

摘　　要：本文选用了乌江流域32个气象站1961—2015年共55年降雨系列资料,采用滑动平均法、Mann-Kendall检验法、Morlet小波分析法等对乌江流域降雨特性进行全面分析,揭示乌江流域的降雨特性和演变趋势,为当地经济社会发展、水资源的开发利用等提供决策依据。分析结果表明,近50年来乌江流域降雨量有减少趋势,下降幅度为14.8mm/10年,下降趋势不明显,同时降雨分别存在5年、7年、18年、28年的振荡周期,其中28年周期振荡最为强烈。In this paper,a series of rainfall data from 32 meteorological stations in the Wujiang River Basin for 55 years from 1961 to 2015 are selected,and the moving average method,Mann-Kendall test method,Morlet wavelet analysis method are used to comprehensively analyze the rainfall characteristics in the Wujiang River Basin,so as to reveal the characteristics and evolution trend of rainfall in the Wujiang River Basin and provide decision-making basis for local economic and social development as well as the development and utilization of water resources.The results show that the rainfall in the Wujiang River Basin has a decreasing trend in the past 50 years,with a decreasing range of 14.8mm/10years,and the decreasing trend is not obvious.At the same time,the rainfall has an oscillating period of 5,7,18 and 28years,and the oscillating period of 28 years is the strongest.

关 键 词：乌江流域 降雨特性 时空分布 演变趋势 

分 类 号：TV125[水利工程—水文学及水资源]