水资源与水工程学报2017，Vol.28Issue(1)：14-19,25,7.DOI:10.11705/j.issn.1672-643X.2017.01.03
近50年陕南地区降水时空变化特征
Spatiotemporal variability of precipitation in south of Shaanxi province in recent 50 years
摘要
Abstract
Using the moving average method,the cumulative departure method,the linear trend estimation,and the Mann-Kendall method,the trends and characteristics of precipitation and precipitation days in South of Shaanxi province (SSP) were analyzed for recent 53 years in this research.The result showed that,the inter-annual variation of precipitation in SSP was large with uneven distribution within the year,and it had an overall decreasing trend.The precipitation in southern and southeast of SSP had increasing trends,while the precipitation in other areas had decreasing trends,especially in western area.Precipitation decrease was mainly found in spring and autumn in SSP in recent years.All of the total precipitation days,light rain days,and moderate rain days decreased.Both heavy rain days and storm days changed little.The heavy rain days and storm days had significantly positive correlation to annual precipitation amount,and both were important factors that affected average annual precipitation.Since the new century began,summer precipitation,heavy rain days and storm days have increased,which should attract the attentions of related department on the issue of improving flood prevention warning and rapid-response ability.关键词
降水量/时空变化/降水日数/突变分析/陕南Key words
precipitation/spatiotemporal variability/rainy day/abrupt analysis/south of Shaanxi province (SSP)分类
建筑与水利引用本文复制引用
李斌,解建仓,胡彦华,姜仁贵..近50年陕南地区降水时空变化特征[J].水资源与水工程学报,2017,28(1):14-19,25,7.基金项目
国家自然科学基金项目(51509201、51479160、41471451) （51509201、51479160、41471451）
陕西省教育厅科研计划项目(15JK1503) （15JK1503）
