摘要
测定了板栗树冠节肢动物群落主要害虫和天敌的时间生态位,分析了各类群在时间资源序列上分布的数量特征和资源利用状况,研究了各类群之间的竞争与共存机制。研究结果表明:在害虫和天敌中分别以象甲和瓢虫类的时间生态位宽度最大,象甲和蜘蛛类的时间生态位重叠指数最大,其次为蜘蛛和瓢虫类;象甲类和瓢虫类在时间资源上分布较广,对资源具有较强的竞争作用。蜘蛛类对象甲类具有较强的跟随捕食作用。蜘蛛类和瓢虫类对时间资源具有较强的竞争作用。
Temporal ecological niches of dominant pests and their natural enemies in canopy arthropod community in chestnut orchard were estimated. The quantitative characters of the occurrence of each group and the condition of resource utilization were analyzed by the theory of ecological niche. The competitive and co-existence mechanisms of each group among arthropod community were studied. Temporal ecological niche breadth indexes of weevils （0. 644 5） among pests, and lady birds （0. 698 2） among natural enemies were the maximum. Temporal niche overlap index of weevils and spiders （0. 837 4） was the maximum and that of spiders and lady birds （0. 707 2）was the next. The result showed that weevils and lady birds had wide distribution on the resource and powerful ability of resource-utilization. Spiders had powerful ability of pursuing weevils. There was fierce competition between spiders and ladybirds on temporal resource.
出处
《中国森林病虫》
北大核心
2005年第6期8-12,共5页
Forest Pest and Disease
