广东石门国家森林公园群落结构特征分析  

Analysis of Community Structure in Shimen National Forest Park,Guangdong Province

作　　者：吴晓君 钱万惠 赵庆[1] 许东先 张凌宇 WU Xiaojun;QIAN Wanhui;ZHAO Qing;XU Dongxian;ZHANG Lingyu(Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China)

机构地区：[1]广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东广州510520

出　　处：《林业与环境科学》2025年第2期44-50,共7页Forestry and Environmental Science

基　　金：广州市科技计划项目(2024A04J4206)。

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。To investigate the structural characteristics and stability of the forest communities in South Chi-na,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 di-ameter-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 arrange-ment,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 o-verall 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.

关 键 词：石门国家森林公园 群落结构 生态位 林分空间结构 

分 类 号：S718.5[农业科学—林学]