信阳师范学院学报（自然科学版）2017，Vol.30Issue(1)：77-81,5.DOI:10.3969/j.issn.1003-0972.2017.01.017
1951-2014年淮河流域降水量时空变化特征
Characteristics of Temporal and Spatial Variations of Rainfall in Huaihe River Basin During 1 9 5 1-2 0 1 4
摘要
Abstract
Monthly rainfall data of 29 meteorological stations in Huaihe River Basin during 1951-2014 was selected for study.Multiple methods,including linear trend,accumulative anomaly,wavelet analysis and spatial analysis,were applied to detect spatial and temporal characteristics of rainfall variations.The results showed that (1)linear trend for annual,spring,summer and autumn precipitation decreased slightly,and the increasing trend for winter rainfall was not as well obvious;(2)more drought and flood events occurred in spring,autumn and winter.Variation of summer precipitation dominated annual rainfall;(3)quasi-periodicity of 2 years and 6 years were detected in annual rainfall;(4)it indicated an decreasing gradient from southeastern to northwestern in Huaihe River Basin,which was similar in pattern with China;(5)variations of annual and summer precipita-tion at spatial time scale were stronger than other seasons,and regions with increasing rainfall were surrounded by regions with decreasing rainfall.Regional winter precipitation fluctuated with no significant trend during the period of 1951-2014.关键词
淮河流域/降水量/时空变化Key words
Huaihe River Basin/rainfall/temporal and spatial variation分类
天文与地球科学引用本文复制引用
赵国永,韩艳,刘明华,郭雪莲,曹淑青..1951-2014年淮河流域降水量时空变化特征[J].信阳师范学院学报（自然科学版）,2017,30(1):77-81,5.基金项目
国家自然科学基金项目(41602187) （41602187）
河南省科技计划项目(162102310123) （162102310123）
河南省高等学校重点项目(17A170011) （17A170011）
信阳师范学院基金项目(0201306、2015GGJS-01) （0201306、2015GGJS-01）
