| 摘要: |
| 为了解银瓶山森林公园润楠属植物的群落组成、物种多样性及其与海拔因子的关系，对森林公园内不同海拔的12块样地进行调查研究，计算乔木层、灌木层和草本层的物种丰富度指数、Simpson优势度指数、Shannon-Wiener多样性指数和Pielou均匀度指数，分析群落物种多样性与海拔之间的相关性，结果表明：银瓶山润楠属群落中共有70种植物，隶属于41科58属。各植物群落的物种丰富度指数(S)、Simpson优势度指数(D)、Shannon-Wiener多样性指数(H"")整体表现为灌木层>草本层>乔木层，Pielou均匀度指数(E)表现为草本层>灌木层>乔木层。不同群落的乔木层植物物种多样性沿海拔梯度呈先上升后下降的单峰模式，灌木层和草本层的物种丰富度指数、Shannon-Wiener多样性指数均表现为随着海拔的升高而逐渐下降的规律；Simpson优势度指数、Pielou均匀度指数未呈现明显规律。 |
| 关键词: 润楠属 群落结构 物种多样性 海拔 |
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| Diversity of Machilus Plant Communities in Yinpingshan Forest Park |
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Gu Wenqiang1, Liang Yanfei1, Chen Jin1, Deng Zhiwen2, Wen Hanhua1, WU Huilan1, Chen Guofeng1, Zhang Zhongrui2
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1.Dongguan Yinpingshan Forest Park,Dongguan;2.Guangdong Academy of Forestry/ Guangdong Provincial Key Laboratory of Silviculture Protection and Utilizationy,Guangzhou
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| Abstract: |
| With the aim of revealing the community composition, species diversity and relationship with elevation factors of the Machilus in Yinpingshan Forest Park, we calculated the species richness index, Simpson dominance index, Shannon-Wiener diversity index and Pielou evenness index for the tree, shrub and herbaceous layers of the community in 12 sample plots at different elevations in the forest park, and analysed the correlation between community species diversity and elevation. The results showed that there were 70 species of plants belonging to 41 families and 58 genera in the community of Machilus in Yinpingshan Mountain. The species richness index (S), Simpson dominance index (D) and Shannon-Wiener diversity index (H"") of each plant community showed that shrub layer > herb layer > tree layer, and the Pielou evenness index (E) showed that herb layer > shrub layer > tree layer. The diversity of plant species in the tree layer of different communities showed a single-peaked pattern of increasing and then decreasing along the elevation gradient, and the species richness index and Shannon-Wiener diversity index of the shrub layer and herb layer showed a gradual decrease with increasing elevation; Simpson dominance index and Pielou evenness index showed no obvious pattern. |
| Key words: Machilus genus community structure species diversity elevation |
