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脐橙树冠各部位的昆虫种类相同。群落物种个体数的差异,东、南、西、北比上、中、下和内、外部位小。内层的群落结构稳定性较其它各部位差。按群落聚类分析和双轴系统的二维排序的结果,初步提出了树冠各部位不同昆虫群落沿着环境梯度变化的速率和群落相异值水平的指标。
Insect species in all parts of the navel orange crown are the same. Community species differences in the number of individuals, east, south, west and north than the upper, middle, lower and inner and outer bits small. The inner layer of the community structure stability than the other parts of the poor. Based on the results of cluster analysis and two-dimensional sorting of biaxial systems, the indexes of different insect communities along the environmental gradients and the community differences were preliminarily proposed.