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不同类型群落下闽楠的生长与植物物种多样性分析
陈富强1, 程欣欣2, 洪维1, 李仕裕3, 徐 蕾3, 叶秋慧1, 邢福武4, 王发国4
1.广东省龙眼洞林场;2.仲恺农业工程学院园艺园林学院;3.中国科学院华南植物园,;4.中国科学院华南植物园
摘要:
应用植被调查样地法研究广州市龙眼洞林场筲箕窝工区内不同群落(山乌桕 Triadica cochinchinensis -闽楠 Phoebe bournei 群落、山乌桕-樟树 Cinnamomum camphora -闽楠群落、闽楠-楝叶吴 茱萸 Tetradium glabrifolium 群落)中闽楠的生长情况以及物种组成与生物多样性。结果表明:12a 的闽楠在闽 楠-楝叶吴茱萸群落中生长最好,重要值最高,平均树高达 6.42 m,平均胸径达 5.67 cm。对于各群落物种组 成分析:山乌桕-闽楠群落有 48 科 81 属 97 种;山乌桕-樟树-闽楠群落有 46 科 75 属 85 种;闽楠-楝叶 吴茱萸群落有 29 科 38 属 40 种,物种组成表现出山乌桕-闽楠群落>山乌桕-樟树-闽楠群落>闽楠-楝 叶吴茱萸群落。多样性分析:物种数、Margalef 丰富度指数、Shannon-Wiener 多样性指数、Simpson 生态优势 度指数、P 均匀度指数在 3 个群落类型中均表现出灌草层 > 乔木层,表明灌草层的物种数较多,并且较为复 杂,更具有生态优势度,且在群落分布中更均匀;乔木层中的物种数较少,复杂程度较低 , 分布最不均匀。
关键词:  闽楠  群落  物种多样性  广东省龙眼洞林场
DOI:
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The Growth and Plant Species Diversity of Phoebe bournei in Different Types of Communities
Luo Yong,1,h,2,x,z,x,w
1.Longyandong Forest Farm of Guangdong Province;2.College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering;3.South China Botanical Garden,Chinese Academy of Sciences
Abstract:
Using the vegetation survey sample plot method to study the growth of Phoebe bournei, community species diversity in the Shaojiwo work area of Longyandong Forest Farm in Guangzhou city (Triadica cochinchinensis-Phoebe bournei community, Triadica cochinchinensis-Cinnamomum camphora-Phoebe bournei community, Phoebe bournei-Tetradium glabrifolium community). The results showed that: the 12-year-old Phoebe bournei grew the best in the Phoebe bournei-Tetradium glabrifolium community, with the first important value, the average tree height was 6.42 m, and the average DBH was 5.67 cm. For the analysis of the species composition of each community: Triadica cochinchinensis-Phoebe bournei community has 48 families, 81 genera and 97 species; Triadica cochinchinensis-Cinnamomum camphora-Phoebe bournei community has 46families, 75 genera and 85 species; Phoebe bournei-Tetradium glabrifolium community has 29 families, 38 genera and 40 species, and the order of species composition is as follows: Triadica cochinchinensis-Phoebe bournei community>Triadica cochinchinensis-Cinnamomum camphora-Phoebe bournei community>Phoebe bourneiTetradium glabrifolium community. Diversity analysis: the number of species, Margalef richness index, ShannonWiener diversity index, Simpson ecological dominance index, and Puniformity index all show that the shrub-grass layer> the tree layer in the three community types, indicating that the number of species in the grass layer is more, more complex, more ecologically dominant, and more evenly distributed in the community; the number of species in the arbor layer is less, less complex, and the most unevenly distributed.
Key words:  Phoebe bournei  species composition  species diversity  Longyandong Forest Farm of Guangdong Province