【摘要】 报道了广东省鹤山市南亚热带丘陵四种人工林的昆虫群落特征,在四种昆虫群落中,只有针叶混交林昆虫群落的种-多度曲线符合Fisher的对数级数模型,其他三种昆虫群落的种-多度曲线基本符合Preston的对数正态分布。四种昆虫群落的优势类群较为一致,均为鳞翅目Lepidoptera昆虫,且优势科均为螟蛾科Pyraloidae;但各昆虫群落的优势种却明显不同,针叶混交林昆虫群落的优势种十分明显,为松突圆盾蚧Hemiberlesiapitysophila,其优势度指数高达0 1995;纯松林、乡土树种混交林和豆科植物混交林的优势种则分别为湘土苔蛾Eilemahunanica、新角条麦蛾Anarsianovitricornis和李条麦蛾Anarsiapatulella,其优势度指数分别为0.0755、0.0836和0.0690。四种昆虫群落的多样性指数H′、种间相遇几率PIE和均匀度指数J′均比较高,反映出这四种昆虫群落的稳定性均比较强。更多还原

【Abstract】 The characteristics of insect communities are investigated in coniferous mixed forest, leguminous mixed forest, native species mixed forest and pine forest of subtropical hilly land in Heshan, Guangdong Province The results showed that the curve of the species_abundance of insect community in coniferous mixed forest was fitted to the Log_series distribution,and those of other three were fitted to Log_normal distribution. The dominant order and family of insect communities in four types of forest stands were Lepidoptera, Pyraloidae , but the dominant species the insect community in coniferous mixed forest was Hemiberlesia pitysophila(d=0199 5), and  Anarsia novitricornis (d=0083 6), Anarsia patulella (d=0069 0) and Eilema hunanica (d=0075 5) in the native species mixed forest, leguminous mixed forest and pine fores t,respectivevly. All of diversity index (H), probability of interspecific encounter (PIE) and evenness index (J) were high in the communities. These indicated that the insect communities were stable in the four forest stands.更多还原