冀中南太行山前平原初秋降水特征  

Precipitation Characteristics in Early Autumn in Taihang Piedmont Plain of Middle-Southern Hebei

作　　者：朱慧钦 魏瑞江[1,3] 侯晓莉 孙景瑜 马贵宏 赵燕 ZHU Hui-qin;WEI Rui-jiang;HOU Xiao-li;SUN Jing-yu;MA Gui-hong;ZHAO Yan(Hebei Key Laboratory of Meteorology and Eco-Environment,Shijiazhuang 050021,China;Gaoyi Meteorological Bureau,Gaoyi 051330,China;Hebei Institutes of Meteorological Science,Shijianzhuang 050021,China;Meteorological Bureau of Hebei Province,Shijianzhuang 050021,China;Gaocheng Meteorological Bureau,Gaocheng 052160,China)

机构地区：[1]河北省气象与生态环境重点实验室,河北石家庄050021 [2]高邑县气象局,河北高邑051330 [3]河北省气象科学研究所,河北石家庄050021 [4]河北省气象局,河北石家庄050021 [5]石家庄市藁城区气象局,河北藁城052160

出　　处：《河北农业科学》2019年第4期83-88,共6页Journal of Hebei Agricultural Sciences

基　　金：石家庄市气象局自立科研课题项目（ky1608)

摘　　要：初秋(9月)是冀中南太行山前平原秋收作物产量形成的关键时期,此期降水的多少对农业生产有重要影响。采用趋势分析、Mann-Kendall突变检验和小波分析等方法,对1981~2018年9月降水量和降水日数进行分析,探讨了冀中南太行山前平原区初秋的降水特征。结果表明:1981~2018年冀中南太行山前平原9月降水量自西北向东南逐渐减少,气候倾向率为-1.30~8.01 mm/10 a,其中有18个站点呈增加趋势。降水量变化趋势可划分为3个阶段:20世纪80年代初期为降水偏多期;20世纪80年代中后期至21世纪初为降水偏少期;21世纪初以后为降水偏多期。降水量在1986年发生第1次突变;石家庄中西部和邢台区域在2003年,石家庄东部和邯郸区域在2000年发生第2次突变。各区域9月降水量均有明显的周期变化;总降雨日数呈不显著增加趋势,其中邯郸区域小雨日数增加明显。Early autumn(September)is the critical stage for the yield formation of autumn crops in Taihang piedmont plain of middle-southern Hebei,and the amount of precipitation in this period plays significant role in agricultural production.The trend analysis,Mann-Kendall method,wavelet analysis and other methods were used to analyze the amount of precipitation and precipitation days in September of 1981-2018,and to discuss the precipitation characteristics in early autumn in this area.The results showed that the amount of precipitation in September decreased from northwest to southeast gradually from 1981 to 2018,the climatic tendency rate was-1.3-8.01 mm per decade,and 18 stations showed an increasing tendency.All variation tendency could be divided into 3 phases which consisted of exceeding precipitation phage in early 1980s,less precipitation phage from the mid and late 1980s to early 21st century,and exceeding precipitation phage after early 21st century.There was a sudden change about the amount of precipitation in 1986.The amount of precipitation changed suddenly for the second time in the midwest of Shijiazhuang and Xingtai in 2003,and in the east of Shijiazhuang and Handan in 2000.The amount of precipitation in September had obvious periodic changes in each region,the precipitation days had no obvious increasing tendency,while the light rain days raised significantly in Handan.

关 键 词：冀中南太行山前平原 降水特征 突变检验 小波分析 初秋 

分 类 号：P426.6[天文地球—大气科学及气象学]