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《South-to-North Water Transfers and Water Science & Technology》 2015-06
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Spatial and temporal variations of precipitation in Haihe River Basin in recent 51 years

SHU Mei-zhen;LIU Li-hong;College of Globe and Environment,Anhui Science and Technology University;  
Based on the monthly precipitation data of 25 meteorological stations in the Haihe River Basin from 1960 to 2010,the inter-annual precipitation characteristics in the Haihe River Basin were analyzed using the linear regression and cumulative anomaly curve methods.The probability distribution of precipitation was analyzed using the Pearson III curve method,and the spatial variation of precipitation was analyzed using the spatial interpolation method.The results showed that(1)precipitation in the Haihe River Basin has a slightly decreasing trend in recent 51 years,and the decreasing trend is stable recently;(2)there is a trend with more wet years while less dry years in the Haihe River Basin and the trend is increasing;(3)seasonal variation of precipitation is obvious;and(4)precipitation decreases trend from the south to the north.
【Fund】: 大学生创新创业训练计划项目(201310361002);; 国家自然科学基金(41201017)
【CateGory Index】: P426.614
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