Time-space Evolution Feature of Precipitation in Henan Province From 1965 to 2009
Abstract：By using precipitation data of 110 observation stations in Henan f rom 1965 to 2009,combing with spatial analysis and time series analysis,the ti me-space evolution feature of annual precipitation,seasonal precipitation and a nnual variety of different precipitation boundary was analyzed,the 0.05 test of significance was made at the same time.The results showed that the annual prec ipitation had a weak anabatic trend and the annual variety feature of different precipitation boundary was obvious.From the view of temporal distribution,the trends were similar in spring and in winter,which were weak enhancive trends.W hile they were distinct increase and decrease in summer and autumn respectively. From the view of spatial distribution,in spring,the precipitation trend was n either distinct increase nor decrease except in northwestward of Anyang in where the trend was distinct increase.In summer,precipitation of most places increa sed especially in Zhoukou and Pingdingshan.On the contrary,in autumn,precipit ation of most places decreased especially in Nanyang and Xinyang.In winter,the trend was increased but not distinct.
Keywords：precipitationtime-space evolution featureseasonal variety
Publication Date：2011-05-27
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 56-60 )