| 摘要: |
| 为探究广东青云山 1 hm
2 固定监测样地内阳性树种与阴性树种的空间分布格局及种间关联情
况, 以样地内阳性树种黧蒴锥 Castanopsis fissa 和阴性树种密花树 Myrsine seguinii 为例, 基于点格局分析
法, 结合完全随机零模型与异质泊松零模型, 对样地调查数据展开研究。 结果显示, (1) 黧蒴锥属于稳
定型种群, 密花树属于下降型种群。 (2) 在完全空间随机模型下, 两个种群的总体及不同龄级个体主要
呈聚集分布; 在异质泊松模型下, 黧蒴锥的总体及不同龄级个体呈随机分布, 密花树的总体及不同龄级
个体在小尺度上仍为聚集分布, 其余尺度则呈随机分布。 (3) 在完全空间随机模型下, 两个种群各龄级
的种内空间正相关性较强, 但总体及各龄级间大部分呈空间不相关。 研究表明种群的分布受生境异质性
的影响, 阳性树种和阴性树种的空间关联性能在一定程度上预测森林群落的演替趋势。 |
| 关键词: 点格局分析 龄级结构 种内相关性 种间相关性 |
| DOI： |
| 分类号: |
| 基金项目:广东省林木种质资源调查项目 (GDZZDC-2022-8703), 广东翁源青云山省级自然保护区生物多样性与生态系统综合监测系统建设项目 (QYSBHQ-2020-016)。 |
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| Spatial Pattern Analysis of Castanopsis fissa and Myrsine seguinii in the Guangdong Wengyuan Qingyunshan Provincial Nature Reserve |
|
gongyuanhui1, LI Quannian1, YANG Xindong2, CHEN Liubao2, ZENG Xianxing2, HUANG Jiuxiang1
|
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1.College of Forestry and Landscape Architecture, South China Agricultural University;2.Guangdong Wengyuan Qingyunshan Provincial Nature Reserve Management Office
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| Abstract: |
| To explore the spatial distribution patterns and interspecific associations of light-demanding and
shade-tolerant trees in a 1 hm
2
permanent monitoring plot in Guangdong Wengyuan Qingyunshan Provincial Nature Reserve, taking the light-demanding tree Castanopsis fissa and the shade-tolerant tree Myrsine seguinii in
the plot as examples, the research is conducted based on the point pattern analysis method, combined with the
Complete space randomness (CSR) and Heterogeneous poisson process ( HP), using the survey data of the plot. The results showed: (1) C. fissa presented a stable population, while M. seguinii exhibited a declining
population. (2) Under CSR, both the overall populations and individuals of different age classes of the two
species mainly showed aggregated distribution; by the HP, the overall and different age classes of C. fissa
showed random distribution, while the overall and different age classes of M. seguinii remained aggregated at
small scales and random at other scales. (3) By the CSR, the intraspecific spatial positive correlations of each
age class in the two populations were strong, but the overall and inter-age class associations were mostly spatially uncorrelated. The study indicates that the distribution of populations is influenced by habitat heterogeneity,
and the spatial associations between light-demanding and shade-tolerant trees can predict the succession trend of
forest communities to a certain extent. |
| Key words: point pattern analysis age-class structure intraspecific correlation interspecific correlation |
