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作 者 ：尹锴,崔胜辉*,石龙宇,吝涛,郭青海,吕静

期 刊 ：生态学报 2009年 29卷 2期 页码：563~572

关键词：城市森林；植物多样性；环境梯度；人为干扰；

Keywords:urban forest, plant diversity, environment gradient, disturbance,

摘 要 ：以厦门城市森林林下层植被为研究对象，重点研究台湾相思群落中林下灌草层植物多样性与土地利用类型、人为干扰程度之间的相关性；选用基于重要值的4种多样性指数，比较不同邻接用地类型城市森林群落多样性的差异；运用主成分分析、CCA排序以及多元回归等方法对城市森林灌草层植物多样性格局进行解释。结果表明：人为踩踏、垃圾堆积程度、人为挖掘、可到达容易程度等因子对厦门城市森林灌草层植物多样性分布格局有重要影响；厦门城市森林群落草本层β多样性沿着邻接商业用地、交通用地、工业用地、居住用地的方向逐渐增加，而灌木层β多样性沿着该环境梯度的方向却逐渐降低。

Abstract:This study is aimed at understanding anthropogenic impact on the understory plant diversity around the municipal area of Xiamen in Fujian Province, SE China. Four indexes were employed to differentiate the diversity of urban forests adjacent to different land use types. Principle Component Analysis (PCA) and Canonical Correspondence Analusis (CCA) methods were applied in our study. The results showed that human trample, dustheap, digging, accessibility and other factors have great influence on the understory plant diversity. Herb β diversity of urban forest increased along the land use gradient from commercial, transportation, industrial to residential, while shrub β diversity decreased gradually along this environment gradient.

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