人民长江2017，Vol.48Issue(8)：28-31,48,5.DOI:10.16232/j.cnki.1001-4179.2017.08.007
浏阳河流域降水时空演变规律分析
Analysis on spatial-temporal evolution characteristics of precipitation in Liuyang River basin
摘要
Abstract
By using linear regression, moving average, Mann-Kendall test ,accumulative anomaly combined moving t test, Morlet wavelet analysis method, et al., the annual, flood seasonal and non-flood seasonal evolution characteristics of precipitation during 1969~2013 in Liuyang River basin were analyzed.The results indicated that: ①The annual and flood seasonal precipitation presented a nonsignificant decreasing trend and the non-flood seasonal precipitation presented a nonsignificant increasing trend during the past 45 years;②There was an irregular spatial distribution of mean annual precipitation, which showed a decreasing trend from northeast to southwest;③An abrupt change of the annual and flood seasonal precipitation occurred in 1992, and the abrupt change of non-flood seasonal precipitation was not significant;④Annual precipitation had the main oscillation cycles of 27 years in common,and the phase change of precipitation in flood season and non-flood season were essentially consistent with those in annual on the time scale.The research results can provide reference for climate analysis and future weather forecasting in Liuyang River basin.关键词
Mann-Kendall检验/Morlet小波分析/累积距平联合滑动t检验/降水/浏阳河流域Key words
Mann-Kendall test/Morlet wavelet analysis/accumulative anomaly combined moving t test/precipitation/Liuyang River basin引用本文复制引用
于泽兴,胡国华,陈肖,顾庆福..浏阳河流域降水时空演变规律分析[J].人民长江,2017,48(8):28-31,48,5.基金项目
湖南省重大水利科技项目(2013-243-2) （2013-243-2）
湖南省研究生科研创新项目(CX2015B359) （CX2015B359）
