| 朱宏光，杨柳，温远光，等.广西大明山刨花润楠种群结构及其分布格局研究[J].广东农业科学,2015,42(12):147-151 |
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广西大明山刨花润楠种群结构及其分布格局研究 |
| Structure characteristics and spatial distribution of Machilus pauhoi population in Damingshan National Nature Reserve, Guangxi |
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| DOI： |
| 中文关键词: 刨花润楠 种群结构 分布格局 大明山 广西 |
| 英文关键词: Machilus pauhoi population structure spatial pattern Damingshan Guangxi |
| 基金项目: |
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| 摘要点击次数: 1197 |
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| 中文摘要: |
| 为了解刨花润楠在自然分布状态下的种群结构及其分布特性，为其“生资源保护和人工造林提
供理论参考，在广西大明山自然保护区设置3.2 hm2固定大样地，通过“外监测调查，运用林木径级结构代表
年龄结构法，对大明山山地常绿阔叶林中刨花润楠的种群结构、空间分布格局及其动态等进行分析。结果显
示：大明山自然保护区刨花润楠种群的各级分布结构整体上呈“L”型，种群中玉级幼树和域级小树的个体数分
别占47.75%和39.45%，92.4%的个体高度在10 m以下曰种群的Deevey 存活曲线接近于域型，表明种群在不同
生长阶段中表现出相近一致的死亡消失率曰种群的总体空间分布格局为聚集分布型，并具有从早期生长阶段
的聚集分布逐渐转变成后期生长阶段均匀分布的动态特征。大明山山地常绿阔叶林的刨花润楠种群结构相对
完整，属于增长种群，在自然潜在干扰影响中目前仍处于稳定状态。 |
| 英文摘要: |
| To reveal the population structure and distribution of natural Machilus pauhoi, and provide scientific
basis for its conservation of wild resources and reforestation, population structure, spatial pattern and dynamics of M.
pauhoi were investigated in a 3.2 hm2 forest dynamic plot of evergreen broadleaved forest in the Damingshan National
Nature Reserve in south China, using the age structure and survivorship curve. The results indicated that the DBH
size-class structure of M. pauhoi exhibited an L-shaped pattern. The individuals of seeding and sapling represented
47.75% and 39.45% of the total individuals. The tree heights of 92.4% of individuals were below 10 m. The
survivorship curve of M. pauhoi population generally matched a Deevey Type , indicating the same mortality rate
in different size classes. M. pauhoi population showed an aggregated spatial distribution and tended to uniform with
age scale increasing. The results indicated that there was a good regeneration of M. pauhoi across the community.
Intraspecific competition rather than interspecific competition was not severe in a wet and warm habitat in Damingshan National Nature Reserve, may affect the clustering intensity of different growth periods. |
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