西江流域径流演变规律研究  

Rules of Runoff Variation of Xijiang River Basin

作　　者：汪丽娜[1] 陈晓宏[1,2] 李粤安[3] 林凯荣[1] 彭涛[1] 

机构地区：[1]中山大学水资源与环境研究中心,广东广州510275 [2]广东省近岸海洋工程重点实验室,广东广州510275 [3]广东省水利厅,广东广州510635

出　　处：《水文》2009年第4期22-25,共4页Journal of China Hydrology

基　　金：国家自然科学基金重点项目(50839005);国家自然科学基金资助项目(50809078);国家科技支撑计划课题(2006BAB14B07)

摘　　要：西江是珠江流域的主要水系。本文以西江流域高要站1957～2007年径流量的年序列资料为基础,通过Mann-Kendall方法表明,西江流域的径流量在统计意义上无变化趋势。进一步采用小波变换的方法,识别西江流域的径流演变特性,小波分析表明西江流域的多年径流量存在三类尺度周期性变化规律,即西江流域多年径流量的主周期为10a、38a和48a。The Xijiang River is one of the important rivers in the Pear River Basin. According to the annual runoff time series at the Gaoya Station of the Xijiang River Basin from 1957 to 2007, there was no runoff change tendency in statistical significance based on the Mann-Kendall method. This paper used the wavelet transformation method to distinguish the runoff evolution characteristics of the Xijiang River Basin. Wavelet analysis shows that the annual runoff varies mainly in three time scale, namely 10, 38 and 48 years. Therefore, the principal periods of annual runoff of the Xijiang River Basin are 10, 38 and 48 years.

关 键 词：Mann—Kendall方法 小波变换 周期 

分 类 号：TV121.9[水利工程—水文学及水资源]