| 何建敏1，王震洪2.雷公山灌木林群落结构及其优势种
种群特征关系研究[J].广东农业科学,2014,41(6):183-187 |
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雷公山灌木林群落结构及其优势种
种群特征关系研究 |
| Exploration of relationship between community structureand its dominant population characteristicsin shrubbery of mountain Leigong in China |
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| DOI： |
| 中文关键词: 重要值 多样性指数 种群特征参数 相关性 |
| 英文关键词: important values diversity index population characteristics parameters relevance |
| 基金项目:国家自然科学基金（40861015） |
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| 摘要点击次数: 1849 |
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| 中文摘要: |
| 种群是群落结构和功能的基本单元，群落的优势种对群落结构和环境的形成起着主导作用，然而，优势种对群落结构形成的作用机制以及其种群特征与群落结构的关系鲜见报到。调查了总面积为656 m2雷公山灌木林地，共设置4 m伊4 m样方41 个，获得相关群落和种群参数，运用SPSS 17.0 分析了群落结构参数与种群结构参数之间的关系。结果表明：物种多样性指数与群落内优势种种群粗密度、种群扩散系数、平均树高的偏相关系数分别为-0.927***、-0.928***、-0.913***，均呈显著负相关，即物种多样性指数随着群落内优势种种群粗密度、种群扩散系数、平均树高的数值增大而减小，呈现负相关关系。群落内优势种个体较多不利于建立物种丰富的植物群落结构。进一步验证了优势种在群落中的重要地位和作用。 |
| 英文摘要: |
| Population is the basic unit of community structure and function, and dominant populations in community
play a key role in the formation of community structure and environment. However, it is still unknown how the dominant
population works on the formation of community structure and what is the relationship between them. To answer this, a field
investigation was conducted in mountain Leigong dealing with the total number of 41 of 4 m .4 m quadrats in 656 m2 of
shrubbery. SPSS 17.0 was used to analyze the relationship between the parameter of population and community structure.
The results showed that, the partial correlation coefficients of species richness index D and the crude density, diffusion
coefficient of population and average plant height of the dominant population in plant community are respectively -0.927***,
-0.928***and -0.913***, presenting negative correlation, namely that, the species diversity diminishes with the increased number of dominant populations crude density, diffusion coefficient and average plant height of the dominant population.
More individuals of the dominant population in plant community are not conducive to plant community diversity. The work
further validates the dominant populations position and role in plant community. |
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