广东南山保护区常绿阔叶林主要树种空间分布格局和空间关联

为深入研究广东始兴南山保护区的地带性植被亚热带常绿阔叶林的物种格局特征,在保护区设置了1 hm~2的固定监测样地,对样地主要物种的空间分布格局及其关联性进行了研究。结果表明:面积为1 hm~2样地中共有94个乔木树种,3 359个植物个体,在群落占优势的这4个物种为罗浮栲Castanopsis fabri、栲Castanopsis fargesii、华南木姜子Litsea greenmaniana和罗浮柿Diospyros morrisiana。华南木姜子和罗浮柿的分布格局主要呈现聚集分布,但罗浮栲和栲的聚集程度较低,物种的分布格局受物种特性和生境异质性的影响。群落主要物种的关联性不明显,整体竞争不明显,群落会继续演替。

Spatial Distribution Patterns and Interspecific Relationships of Tree Species of Evergreen Broad-leaved Forest at Nanshan Natural Reserve of Guangdong

In order to study the species pattern characteristics of the zonal vegetation subtropical evergreen broad-leaved forest in Nanshan Reserve of Shixing,Guangdong province,a 1 hm2 forest plot was established in the reserve,and the spatial distribution pattern and correlation of the main species in the plot were studied.The results showed that,in the sample plot of 1 hm2,a total of 3359 individuals,belonging to 94 species were recorded.The four dominant species in the community were Castanopsis fabri,Castanopsis fargesii,Litsea greenmaniana and Diospyros morrisiana.The distribution patterns of L.greenmaniana and D.morrisiana were mainly concentrated,but the concentrations of C.fabri and C.fargesii were low.This was related to species characteristics and habitat heterogeneity.There was no obvious correlation between the main species in the community,no obvious overall competition,and the community will continue to succession.