林丹烟剂干扰下毛竹林节肢动物群落的时间动态

Temporal Dynamic of the Arthropod Community in the Forest of Phyllostachys heterocycla var. pubescens Disturbed with Pesticide of Lindane

利用2001年11月到2002年9月期间对未防治、白僵菌防治和林丹烟剂防治毛竹林节肢动物群落的系统调查资料，分析了林丹烟剂干扰下群落多样性、天敌与害虫个体数比例和叶部主要害虫种群的时间动态。结果表明：以未防治和白僵菌防治为对照，林丹烟剂干扰明显降低了群落各阶段的丰富度、物种多样性，削弱了大多数阶段天敌对害虫的自然控制作用，增加了大多数阶段蠕须盾蚧和8～9月期间刚竹毒蛾的种群数量，有利于这两种害虫的暴发。

Based on a field survey of the selected sampling sites in the forest of Phyllostachys heterocycla var. pubescens disturbed with the pesticide of Lindane in Sanming of Fujian Province from November 2001 to September 2002, the temporal dynamics of the diversity ,the individual number proportion of natural enemies to pests, the main leaf pest populations of phytophagous mites, Kuwanaspis vermiformis and Pantana phyllostachysae in the arthropod community were analyzed. The results showed that in contrast with the forests of non-control and controlling with Beauveria sp., richness, species diversity in all the months and control use of natural enemies to pests in most of the months in the community were all decreased remarkably for the disturbance of Lindane. However, the population number of K. vermiformis in most of the months and P. phyllostachysae during August to September were all increased significantly for the same disturbance. Thus, long-term use of Lindane frequently and largely could benefit the outbreaks of these two species of pests.