安徽农业科学2012，Vol.40Issue(4)：2257-2259,2263,4.
第二松花江流域近75年降水量变化特征分析
Characteristics Analysis of 7S-years Precipitation Change in the Second Songhua River Basin
摘要
Abstract
With the linear regression method, 11-year moving average method, Mann-Kendall test, Moriet wavelet analysis and Hurst index, this paper analyzed the characteristics and trends of precipitation of the Second Songhua River Basin from 1936 to 2010. The results showed that the precipitation of the Second Songhua River Basin in the past 75 years appeared downward trend, especially in autumns, and the precipitation decreased by 6.22 mm every 10 years; the annual precipitation decreased significantly in 1951 while increased significantly in 1965; annual precipitation showed 4a, 10a, 29a cycles while the 29a cycle was the most obvious, followed by the 10a cycle; Hurst value indicated that the precipitation will appear downward trend in future time on the whole and it has a general persistence; for each season, winter has a slightly anti-persistence and other seasons all has general persistence.关键词
第二松花江流域/降水量/Mann-Kendall检验/Morlet小波分析/Hurst指数法Key words
The Second Songhua River Basin/ Precipitation/ Mann-Kendall test/ Moriet wavelet/ Hurst index method分类
天文与地球科学引用本文复制引用
吴亚楠,李鸿雁,王玉新..第二松花江流域近75年降水量变化特征分析[J].安徽农业科学,2012,40(4):2257-2259,2263,4.基金项目
南京水利科学研究院水文水资源与水利工程科学国家重点实验室开放基金项目(2009491311) （2009491311）
国家自然科学基金资助(50879028) （50879028）
水沙科学与水利水电工程国家重点实验室开放研究基金项目(sklhse-2010-A-02) （sklhse-2010-A-02）
吉林省科技厅应用基础项目(2011-05013) （2011-05013）
