园林昆虫群落时间结构及动态研究

STUDIES ON THE TEMPORAL STRUCTURE AND DYNAMIS OF THE INSECT COMMUNITIES IN GARDENS

调查了４种不同园林植物类型内昆虫群落在１年中的组成及数量变化，应用主分量分析方法及最优分割方法分析了昆虫群落在时间过程中的主导因素和时间格局。结果表明，构成复杂的植物类型内，昆虫群落构成亦复杂，在时间过程中，昆虫群落结构变化波动小，具有明显的主导因素和时间格局；在单纯的植物类型中，昆虫群落组成简单，随时间变化，群落剧烈波动，且主导因素及时间格局分化不明显。

The variation of species and individual numbers of the insect communites in four types of garden plants were investigated over one year.The principal component analysis and the optimal sorting method were used for studying the main factors and the temporal patterns of the insect communities in the course of seasons.The results showed that the insect community had a more compliated composition,less fluctuations,more obvious main factors and temporal patterns in the complex plant type than those in the simple plant type.In the simple plant type,the composition of the insect community was simple and fluctuated greatly.Its main fators and temporal patterns were not obvious.