Analysis of the occurrence patterns of Hyphantria cunea Drury in urban areas of Nanjing
From 2019 to 2023,an investigation was conducted on the occurrence patterns of Hyphantria cunea Drury in the four main urban areas of Nanjing City(Gulou District,Jianye District,Qinhuai District,and Xuanwu District).Based on the dynamic changes of the adult population,larval infestation status,and the annual overwintering pupal counts of H.cunea Drury over these five years,the author has summarized the life history of the pest in Nanjing.By summarizing the meteorological factor data and performing a correlation analysis between several factors and the number of emerging adults in each generation,it was found that the meteorological factor most significantly correlated with the emergence of the overwin-tering generation was the decadal average relative humidity,with R2 value of 0.912 5.The most significant meteorological factor correlated with the emergence of the first generation adults was also the decadal average relative humidity,with R2 value of 0.612 4.For the second generation,the most significant factor was the decadal total rainfall,with an R2 value of 0.999 8.A forecasting model for the occurrence period of H.cunea Drury in Nanjing was established using regression meth-ods,aiming to providing a reference for predicting the trend of the H.cunea Drury occurrence and carrying out prevention and control efforts in other cities and regions in the middle and lower reaches of the Yangtze River.
Hyphantria cunea DruryOccurrence patternMeteorological factorUrban area of Nanjing
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NSTL
万方数据
