中国水利水电科学研究院学报2018，Vol.16Issue(2)：149-155,7.DOI:10.13244/j.cnki.jiwhr.2018.02.009
基于标准化降水指数的1959-2014年中国季节干旱时空特征分析
Spatial-temporal characteristics of seasonal drought in China from 1959 to 2014 based on standardized precipitation index
摘要
Abstract
In this study,series of precipitation data of 597 meteorological stations from 1959 to 2014 were used to compute 3-months (seasonal) scale Standardized Precipitation Index.Then the Rotated Empirical Orthogonal Function and the wavelet transform method were employed to analyze the characteristics of spatial distribution and time series of seasonal drought in China,respectively,zoning the drought divisions with respect to each season and identifying the major drought periods of China.The results show that:1) The spring drought is mainly distributed in the Huaihe basin,the Yangtze River and the Heilongjiang River Basin,etc.;the summer drought is mainly distributed in the northern part of North China,the Pearl River Basin,the Yangtze River and the northeast,etc.;the autumn drought is mainly distributed in the Yellow River River,southeast coastal area,Liaohe basin,etc.;the winter drought is mainly distributed in the southeast coast,northeast region,Taihu River Basin and middle and lower reaches of the Yellow River,etc.2) The main drought cycles in China are around 10～15 years.关键词
标准化降水指数/旋转经验正交函数/小波分析/中国/干旱分区Key words
standardized precipitation index/rotated empirical orthogonal function/wavelet analysis/China/drought zones分类
天文与地球科学引用本文复制引用
豆晓军,吕娟,孙洪泉,苏志诚,王亚许..基于标准化降水指数的1959-2014年中国季节干旱时空特征分析[J].中国水利水电科学研究院学报,2018,16(2):149-155,7.基金项目
国家自然科学基金项目(51209220) （51209220）
中国水利水电科学研究院科研专项(JZ0145B592016,JZ0145B582017) （JZ0145B592016,JZ0145B582017）
