| 摘要: |
| 为探究华南地区森林群落结构特征与群落稳定性, 以广东石门国家森林公园天然次生阔叶混
交林 70 m×100 m 样地为研究对象, 计算种群结构、 林分结构、 生态位宽度、 生态位重叠度和总体关联
性, 分析森林群落结构特征和稳定性。 结果表明, 样地乔木隶属于 30 科 44 属 68 种, 整体径阶呈现反
“J” 型曲线分布; 角尺度呈现近正态分布, 随机木占比较高, 林分空间结构稳定; 样地优势树种重要值
排序与生态位排序不一致, 乔木群落种对的生态位重叠指数均小于 0. 5, 竞争程度小; 样地总体关联性呈
不显著正关联, 种群间相互作用不强烈。 因此, 在未来华南地区天然次生林后续经营过程中, 可进行适
当的人工干预, 合理搭配物种, 以促进该地区森林群落的正向演替。 |
| 关键词: 石门国家森林公园 群落结构 生态位 林分空间结构 |
| DOI： |
| 分类号: |
| 基金项目:广州市科技计划项目 (2024A04J4206)。 |
|
| Analysis of Community Structure in Shimen National Forest Park, Guangdong Province |
|
WU Xiaojun, QIAN Wanhui, ZHAO Qing, Xu Dongxian, ZHANG Lingyu
|
|
Guangdong academy of forestry
|
| Abstract: |
| To investigate the structural characteristics and stability of the forest communities in South China, we analyzed a natural secondary broad-leaved mixed forest (70 m×100 m) in Guangdong Shimen National
Forest Park. We calculated the population structure, stand structure, niche width, niche overlap, and overall
correlation, and analyzed the structural characteristics and stability of the forest community. The results showed
that the trees within the sample site were classified into 30 families, 44 genera, and 68 species. The overall diameter-class distribution exhibited a reverse J-shaped distribution curve. The uniform angle index distribution
approximated a nearly normal distribution, with a high proportion of trees exhibiting random spatial arrangement, which indicates a stable stand. The ranking of importance values of the dominant tree species within the
sample site was inconsistent with the ordering of niche positions, and the niche overlap index of species pairs in
tree communities was less than 0. 5, and indicating a low level of competition. The sample plots exhibit an overall non-significant positive association, suggesting limited interactions between populations. Therefore, in
the follow-up management process of natural secondary forests in South China, appropriate artificial intervention and reasonable collocation of species can be carried out to promote the positive succession of forest communities. |
| Key words: Shimen National Forest Park community structure niche spatial structure of forest stands |
