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对燕山东部浅山区赤松毛虫世代内种群数量动态规律进行了调查，分析了各虫期死亡原因及死亡率的变异程度，并对影响种群世代内总死亡率高低的关键虫期和关键因子进行了分析，建立了赤松毛虫世代内种群数量动态模拟模型。对于进行世代内赤松毛虫种群数量动态预测，油松受害程度估测具有一定意义。
The population dynamics of Cydonia caterpillar population in the shallow mountainous area of eastern Yanshan were investigated. The causes of death and the degree of variation of mortality in each stage were analyzed. The key stages and key factors that affected the total mortality in population generations were also studied The dynamic model of the population number in Cydia caterpillars was established. It is of significance to estimate the damage degree of Pinus tabulaeformis to predict the population dynamics of Dendrolimus punctatus in the future generations.