山西省近61年降雨时空变化分析  

Analysis on Temporal and Spatial Variation of Rainfall in Shanxi Province in Recent 61 Years

作　　者：张乾[1] 回晓莹[1] 张永杰 Zhang Qian;Hui Xiaoying;Zhang Yongjie(China Water Resources Beifang Investigation,Design and Research Co.Ltd.,Tianjin,300222)

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《水利水电工程设计》2021年第2期24-26,56,共4页Design of Water Resources & Hydroelectric Engineering

摘　　要：选取山西省22个典型雨量站近61年(1956—2016年)逐月降雨量资料,采用线性回归法、滑动平均法、模比系数差积曲线法和克里金插值法对山西省年降雨量和分期(汛期、非汛期)降雨量进行了时空变化分析。结果表明:山西省近61年来年降雨量与分期降雨量都呈下降趋势;降雨年内分配不均,汛期降雨量占全年的72.3%;降雨受地形影响大,中部盆地较少,东西部山区较多;空间分布上具有明显的经向性,东部地区降雨量大于西部。Based on the monthly rainfall data of 22 typical rainfall stations in Shanxi Province in recent 61 years(1956—2016),the temporal and spatial variations of annual rainfall and phased(flood season and non-flood season)rainfall were analyzed by using linear regression method,moving average method,modulus coefficient difference product curve method and Kriging interpolation method.The results show that the annual rainfall and phased rainfall in Shanxi Province in recent 61 years have a downward trend.The distribution of rainfall is uneven in the year,and the rainfall in flood season accounts for 72.3%of the whole year.Rainfall is greatly affected by topography,with less in the central basin and more in the eastern and western mountainous areas,and the spatial distribution has obvious meridional characteristics,the rainfall in the East is greater than that in the West.

关 键 词：降雨 模比系数差积曲线 克里金插值 时空变化特征 

分 类 号：TV12[水利工程—水文学及水资源]