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车八岭20 hm2 中亚热带常绿阔叶林监测样地群落物种 组成和区系特征*
吴智宏1, 王梓2, 栾福臣1, 李步杭2, 束祖飞1
1.广东车八岭国家级自然保护区管理局;2.中山大学
摘要:
摘要　研究参照 CTFS 森林监测技术规范，在车八岭国家级自然保护区内建立 20 hm2 森林监测样地。2017 年第一次调查结果显示：样地内共调查到 DBH ≥ 1 cm 含分枝的乔木、灌木和木质藤本植物存活个体有 100 129 个；其中，独立个体有 85 501 株，隶属于 64 科，140 属，230 种。不同物种的独立个体数存在明显差异，排序在前面 8 个物种独立个体数为 41 815 棵，约占总数的 50%。样地内单种属有 112 个，占总属数的 80%，包含两个种的次之，其属数为 19 个。从植物区系组成分析表明，样地群落调查到的230 个物种中，有 5 个物种属于世界分布种。样地内广义热带种为 170 个，隶属于 95 个属；广义温带种51 个。结果表明，车八岭处在由热带向温带过渡的森林生态系统，属于典型的中亚热带森林生态系统。
关键词:  车八岭  中亚热带  物种组成  区系特征  森林监测样地
DOI：
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基金项目:广东车八岭国家级自然保护区森林资源监测数据采集项目（2018-0203）
Community Composition and Floral Characteristics of the Chebaling 20 hm2 Forest Dynamic Plot in A Mid-subtropical Evergreen Broad-leaved Forest
wuzhihong1, wangzi2, luanfuchen1, libuhang2, shuzufei1
1.Chebaling National Nature Reserve;2.SunYat-sen University
Abstract:
Abstract Following the CTFS forest monitoring protocol, a 20 hm2 forest dynamic plot was established in the Guangdong Chebaling National Nature Reserve. The first survey was completed in 2017. A total of 100 129 stems (including branches) with diameter at breast height (DBH) ≥ 1 cm were recorded, including trees, shrubs and lianas. Among them, there are 85 501 independent individuals, belonging to 64 families, 140 genera, and 230 species. There were significant differences in the number of independent individuals among species. The eight most abundant species had a total of 41 815 individuals, accounting for 50% of the total number of individuals in the plot. There were 112 genera with only one species in the plot, making up 80% of total number of genera. The second largest proportion of genera was made up by genera (19) with two species. From the analysis of flora composition, of the 230 species in the plot, five species are cosmopolitan distribution, 170 species in 95 genera are distributed in the tropics; 51 species are distributed in temperate areas. The analysis above shows that Chebaling is transitional from tropical to temperate belonging to the typical mid-subtropical forest ecosystem.
Key words:  Chebaling  mid-subtropical  community composition  floral characteristics  forest dynamic plot