为了探明中部型厄尔尼诺事件(Central Pacific El Niño,CP)和东部型厄尔尼诺事件(Eastern Pacific El Niño,EP)对华南褐飞虱发生的不同影响及其气候原因,基于 1979-2020 年褐飞虱灯诱虫量数据和气象数据,利用非参数检验、相关分析、反距离权重插值等方法,探讨两类厄尔尼诺事件的不同气象条件对华南褐飞虱发生的影响.结果表明:(1)CP事件与EP事件对华南褐飞虱发生程度的影响存在显著差异,CP事件更易引发华南褐飞虱的发生.(2)CP事件影响华南褐飞虱发生程度受大气温度场影响显著,EP事件发生时,华南褐飞虱发生程度不仅受大气温度场影响,还受降水影响.(3)两类厄尔尼诺事件大气温度场差异和大气环流差异是造成华南褐飞虱发生程度不同的主要气象原因.
Abstract
In order to explore the different effects of Central Pacific El Niño(CP)and Eastern Pacific El Niño(EP)on the occurrence of Nilaparvata lugens(Stål)in South China and the underlying climatic causes.Based on the light-trap data of N.lugens and meteorological data from 1979 to 2020,the effects of different meteorological conditions of two types of El Niño events on the occurrence of N.lugens in South China was discussed by means of nonparametric tests,correlation analysis and inverse distance weight.The results showed as follows:(1)there was a significant difference between the effects of CP events and EP events on the occurrence of N.lugens in South China,with CP events being more likely to trigger a large occurrence of N.lugens immigration in South China.(2)The occurrence degree of N.lugens in South China was significantly affected by the atmospheric temperature fields during the impact of CP events,whereas it was affected not only by the atmospheric temperature fields but also by the precipitation during an EP events.(3)The differences of atmospheric temperature fields and atmospheric circulation situation between the two types of El Niño events were the main reasons for the different occurrence degree of N.lugens in South China.
关键词
褐飞虱/中部型厄尔尼诺事件(CP事件)/东部型厄尔尼诺事件(EP事件)/气象条件
Key words
Nilaparvata lugens(Stål)/Central Pacific El Niño event(CP Events)/East Pacific El Niño event(EP Events)/Meteorological condition
维普
万方数据