特呈岛不同红海榄群落空间结构比较  

Comparative Analysis on Spatial Structures of Different Rhizophora stylosa Communities in Techeng Island

作　　者：黄剑坚[1] 李际平[1] 刘素青[2] 韩维栋[2] 曾群英[2] 

机构地区：[1]中南林业科技大学林学院,长沙524094 [2]广东海洋大学农学院,广东湛江524088

出　　处：《林业资源管理》2013年第6期92-95,101,共5页Forest Resources Management

基　　金：国家自然科学基金(31170511);广东省自然科学基金(S2012010008703);广东省海洋渔业科技推广专项基金(A201008J02;2011011I02)

摘　　要：以广东湛江特呈岛不同红海榄群落为研究对象,运用混交度、健康指数、大小比指数、竞争指数、角度尺和空间密度指数分析和比较了特呈岛不同红海榄群落空间结构。结果表明:群落2是高度混交,群落1和群落3属于中度混交,群落4为纯林;群落4红海榄纯林的胸径大小比最小,群落1红海榄和白骨壤混交群落的树高大小比数最小;林分空间分布格局中,所有群落的平均角尺度都大于0.517,为团状分布;红海榄、木榄混交群落健康状况比纯林群落好;红海榄纯林竞争指数最小,处于优势;群落3的平均空间密度指数比其它群落小,生长情况较好。We take different Rhizophora stylosa communities as the object of study in Techeng Island,and use the mingling,health index,neighborhood comparison,competition index,neighborhood pattern and spatial density index to analyze and compare the spatial structures of different Rhizophora stylosa communities. The results show that the second community is a highly mixed,the first community and the third one belongs to moderately mixed forest,the forth community is pure forest; the DBH neighborhood comparison of the forth community is the least. The tree height neighborhood comparison of the first community is the least. All the communities are greater than 0. 517 in the stand spatial distribution pattern,which is slug distribution. Rhizophora stylosa and Bruguiera gymnorrhiza mixed community health is better than pure mangrove community. Pure Rhizophora stylosa community competition index minimum is in a dominant position. The three community average spatial density index is smaller than other communities and growth is better.

关 键 词：红海榄 空间结构 红树林 特呈岛 

分 类 号：S718.54[农业科学—林学]