岛屿栖息地鸟类群落的丰富度及其影响因子

1997年1月至1997年12月间，以杭州市的园林鸟类群落为研究对象，对岛屿栖息地鸟类群落的丰富度与面积，人为干扰，内部结构和周围景观结构等多种因素的关系进行了系统的分析和检验。在杭州市各园林中共观察到82种鸟类。园林单次调查的鸟类物种数（S）与园林全年总物种数（Sy)与园林面积（A）的最佳回归拟合方程分别为；S＝ 2.7432A^0.3846,Sy=10.6574A^0.3669。杭州市园林鸟类群落物种－面积关系的成因不支持平衡假说，随机取样假说，栖息地多样性假说和干扰假说，岛屿栖息地鸟类群落的丰富度是多因素综合作用的结果，包括取样面积效应（排除了取样面积效应之后，小园林具有更高的物种密度），栖息地结构的多样性（其中树种多样性是最主要的影响因子），干扰因素，物种因素和研究尺度等几个方面。

The Richness of Island Habitat Avian Communities and Their Influencing Factors

The species-area relationship of insular faunas has been described and interpreted for over 70 years, but there is little agreement on its cause. Four processes have been proposed to explain this pattern: the equilibrium hypothesis, the passive sampling hypothesis, the habitat diversity hypothesis and the disturbance hypothesis. In this paper, we assessed the four hypotheses and analyzed the richness of island habitat avian communities and their influencing factors. Studies were conducted at 20 urban woodlo...