| 摘要: |
| 应用样方调查法研究了南昆山华东润楠群落物种组成及优势种群的空间分布格局。结果表明，华东润楠群落以樟科、壳斗科和山龙眼科等热带亚热带植物类群为优势。华东润楠是群落的优势种群，该种群具有较丰富的幼苗和VI级立木，但缺乏Ⅲ级至V级中龄级立木，种群结构不稳定。幼龄期个体呈聚集分布，林冠层个体趋于随机分布，表明该种群已呈现衰退趋势。随着群落的进展演替，华东润楠种群的优势将被其他耐阴性树种所代替。 |
| 关键词: 华东润楠 群落 物种多样性 种群结构 空间分布格局 南昆山 |
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| Floristic diversity and dominant populations of Machilus leptophylla community on Nakunshan, Guangdong |
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mahongyan,Zhuang Xueying,Peng YiSheng,Zhang Hao,Tang Guang-da,Mo Luo-jian
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| Abstract: |
| Floristic composition and spatial patterns of dominant species of Machilus leptophylla community in Nankunshan Nature Reserve of Guangdong Province were studied by plot method in this paper. The community is dominated by tropical and subtropical plants such as Lauraceae, Fagaceae and Proteaceae. Machilus leptophylla is a major dominant population in this community, which consists of large amount of seedlings and canopy trees, but lacks some middle aged trees between III and V class, and its population structure is unstable. The young seedlings grow in clumped pattern, while the canopy trees in random pattern. All this indicates that the population of Machilus leptophylla community tends to declining. With the progresiive succession the predominance of Machilus leptophylla will be replaced by neutral tree species. |
| Key words: Machilus leptophylla community species diversity population structure spatial distribution pattern Nankunshan |
