【作者】 杨凯； 陈惠； 林晶； 王加义； 陈彬彬； 马治国；

【Author】 YANG Kai,CHEN Hui,LIN Jing,Wang Jia-yi,Chen Bin-bin,Ma Zhi-guo (Institute of Meteorological Sciences of Fujian Province,Fuzhou 350001)

【机构】 福建省气象科学研究所；

【摘要】 根据莆田市2个站点1992～2009年冬季逐日气候资料和枇杷相对气象产量,对枇杷低温害的致灾因子和低温害综合气候指标进行了研究。结果表明,枇杷低温害的临界温度可以定为3.0℃,其致灾因子为极端最低气温、≤3.0℃低温日数之和、≤3.0℃低温害持续日数和≤3.0℃有害积寒,4个致灾因子之间呈极显著相关。利用主成分分析对4个致灾因子进行综合简化,得到枇杷低温害综合气候指标。通过对莆田市低温害综合气候指标与枇杷相对气象产量进行相关分析,可以得到两者呈显著的负相关关系,可以用来分析枇杷低温害的轻重。更多还原

【Abstract】 Based on the daily climate data in winter and relative meteorological yield of loquat for 2 meteorological stations in Putian from 1992 to 2009, this paper studied the disaster-inducing factors and integrated climatic index for low temperature injury of loquat. The results showed that the critical temperature for low temperature injury of loquat could be determined as 3.0℃. The disaster-inducing factors included extreme minimum temperature, the sum of daily numbers for less than or equal to 3.0℃, the sustained days of low temperature injury for less than or equal to 3.0℃, and harmful chilling accumulation for less than or equal to 3.0℃, and there were obvious correlations among these factors. According to the method of principal component analysis, an integrated climatic index was obtained. By the correlation analysis of integrated climatic index for low temperature injury and the relative meteorological yield of loquat in Putian, the value of integrated climatic index of low temperature injury was significantly negatively correlated with the yield of loquat, and could be used to analyze the degree of low temperature injury of loquat.更多还原