【摘要】 通过对云南松毛虫自然种群数量动态规律的研究,组建了自然种群生命表,并采用排除控制指数法(EIPC)对其进行了关键因子和阶段的分析,结果表明:种群消长趋势指数(I)大于1,种群呈上升趋势;自然死亡对种群密度发展趋势起关键作用,其次是幼虫的迁移;幼虫期是种群消长的关键阶段。更多还原

【Abstract】 Based on the study of natural population dynamics of Dendrolimus houi Lajonquiere,the natural population life table was worked out,and the key factors and stage were analysed by Exclusion Index of Population Control(EIPC).The results showed that when the index of natural population fluctuation trend was more than one,the population was increasing.The key factor was natural mortality,and the larva period was the key stage.更多还原