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Position: Home > Articles > Stand Spatial Structure of Rhizophora stylosain Techeng Island Protection Forest Science and Technology 2017 (12) 5-9+37

特呈岛红海榄林分结构特征分析

作  者:
周元满;谢嘉莉;黄剑坚;刘志美
单  位:
广东海洋大学农学院
关键词:
红海榄;特呈岛;最小距离指数;连接度指数;分布格局
摘  要:
采用随机抽样方法,对湛江特呈岛红树林自然保护区内的红海榄纯林、红海榄+木榄+白骨壤混交林和红海榄+白骨壤混交林3种群落类型中红海榄林分结构进行调查。运用重要值指数、径级结构和高度级结构对比分析、地径与树高的相关模型拟合、最小距离指数和连接度指数对特呈岛红海榄的林分结构特征进行分析。结果表明:红海榄在群落灌木层中处于优势地位,并与木榄处于长期竞争状态;红海榄地径与树高最佳拟合模型为多项式回归方程:H=1.268 1+0.219 9 D-0.003 9 D~2;红海榄林分空间连接度低,呈离散状态,纯林的最小距离指数低于混交林,分布格局呈随机分布。
译  名:
Stand Spatial Structure of Rhizophora stylosain Techeng Island
作  者:
Zhou Yuanman;Xie Jiali;Huang Jianjian;Liu Zhimei;Agriculture College of Guangdong Ocean University;
关键词:
Rhizophora stylosa;;Techeng Island;;nearest neighbor index;;connectivity index;;distribution
摘  要:
The stand spatial structure of three types of community(pure forest of Rhizophora stylosa,R.stylosa +mixed forest of Bruguiera gymnorrhiza+Avicenniamarina and R.stylosa+mixed forest of Avicennia marina)in Mangrove Nature Reserve on Techeng Island in Zhanjiang City of Guangdong Province were investigated by adopting random sampling method.The structure features of R.stylosain Techeng Island were discussed by means of importance value indexes,comparison between size structure and height class structure,mathematical fitting model between size and height,nearest neighbor index and connectivity index.Result shows that R.stylosapopulation plays a dominant role in the shrub layer of the community and has a long-term competition with Gymnorrhiza.The optimal mathematical fitting model between the size and height of R.stylosais polynomial regression equation:H =1.268 1+0.219 9 D-0.003 9 D~2.The spatial connectivity of R.stylosais low,nearest neighbor index of pure forest is lower than that of mixed forest;and distributes random with a discrete state.

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