南水北调与水利科技Issue(2)：220-224,5.DOI:10.13476/j.cnki.nsbdqk.2015.02.007
近50年贵州不同强度降水日数时空变化分析
Spatial and temporal variations of rainfall days with different intensities in Guizhou in recent 50 years
摘要
Abstract
Based on the daily precipitation data at 81 meteorological stations in Guizhou Province froM1961 to 2010, the spatial and temporal variations and abrupt change of rainfal days with different intensities were analyzed using the methods of linear trendanalysis,Mann-Kendal test,andGISspatialanalysis.Theresultsshowedthattherainfal dayswithdifferentintensities increase gradual y froMthe 1960s to 1990s and decrease in the early 2000s, the total rainfall days present an obvious decreasing trend with a rate of 1. 93 d/10a, and the light rainfal days account for most of total rainfal days as both have an abrupt decrea-sing trend in 2006. As for the spatial distribution, the total rainfall and light rainfall days decrease froMsouthwest to northeast withhigher-valuecentersinDafang,Nayong,andShuichenginthesouthwestandlower-valueareasinthesoutheastandnorth-east of Guizhou Province, while the mediuMrainfal and heavy rainfal days decrease froMsoutheast to northwest. The rainfall daysdecreasein different areaof Guizhou Province.The total rainfalland lightrainfal days havea significantly decreasing trend in the south of Guizhou Province, the proportion of moderate rainfall days shows a decreasing trend of 90. 1%,and the area of heavy rainfall days with an increasing trend accounts for 67.1% and is mainly located in the west, northeast, and south central Guizhou Province with a banding distribution.关键词
降水日数/Mann-Kendal检验/时空变化Key words
rainfall days/Mann-Kendal test/spatial and temporal variations分类
天文与地球科学引用本文复制引用
白淑英,莫婷,史建桥,周寅..近50年贵州不同强度降水日数时空变化分析[J].南水北调与水利科技,2015,(2):220-224,5.基金项目
环保部公益性行业科研专项项目”我国国土生态安全格局构建关键技术与保护战略研究”(201209032) （201209032）
