长江科学院院报2017，Vol.34Issue(10)：1-5,5.DOI:10.11988/ckyyb.20161118
三江源区径流演变规律分析
Variation Characteristics of Runoff Time Series in the Source Region of Three Rivers
摘要
Abstract
The runoff time series during 1956-2012 in the source region of Three Rivers (the Yangtze River,the Yellow River,and the Lancang River) are analyzed by using linear regression,moving average,Mann-Kendall test,accumulative anomaly,moving t test and Morlet wavelet analysis method.Results indicate that:1) during the past 57 years,the annual runoff at Zhimenda station,Jimai station and Xiangda station presented upward trend,among which the runoff trend at Zhimenda station was significant,whereas at Tangnaihai station the annual runoff presented a downward trend;2) abrupt change occurred in 2004 at Zhimenda station and Jimai station rather than the other stations;3) annual runoff in the source region of Three Rivers had main oscillation cycles in common of 6-8 years and 23 years,of which the interval of 23 years experienced the most significant fluctuation.There were three more-than-normal periods and two less-than-normal periods.The research results provide reference for the protection and management of water resources in the middle and lower reaches.关键词
三江源区/径流演变/Mann-Kendall检验/Morlet小波分析/累积距平/滑动t检验Key words
Source Region of Three Rivers/runoff variation/Mann-Kendall test/Morlet wavelet analysis/accumulative anomaly/moving t test分类
建筑与水利引用本文复制引用
蔡宜晴,李其江,刘希胜,唐洪波,李燕..三江源区径流演变规律分析[J].长江科学院院报,2017,34(10):1-5,5.基金项目
国家自然科学基金项目(41375116) （41375116）
