摘要
应用植物群落学方法,调查分析了海南清澜港优势植物海莲(Bruguiera sexangula)种群的结构特征。结果表明:海莲各级高度的个体数分布较均匀,但不同样地间的各级高度个体数分布仍有一定的差异;在调查的个体中(胸径大于1cm),海莲最大冠幅直径的个体是7m,66%个体的冠幅直径大小在0.5m~3m范围内;63%个体的胸径大小在2.5cm~7.5cm范围内,种群整体的自然更新能力较强。运用5种研究模型对海莲胸径与树高和冠幅直径之间的关系进行拟合,均达到了极显著水平;对海莲种群的分布格局的分析表明,三个样地的海莲种群都基本属于聚集型分布,不同发育阶段种群的分布格局大体上表现为集群型向随机型转变;但人为活动干扰对海莲种群幼龄树的分布格局影响较大。
By community methods,this paper analyzed the structural characteristics of Bruguiera sexangula population in Qinglan Port of Hainan province.The result showed that the number of Bruguiera sexangula of individuals distributed evenly at each level on the whole,but it was unevenly in different plots.The largest and the least crown diameter of Bruguiera sexangula were 7m,crown diameter of 66%individuals was between 0.5m and 3.5m.DBH of 63%individuals of Bruguiera sexangula were in a range of 2.5cm~7.5cm,which demonstrated the stronger natural regeneration of the whole population.And using five kinds of research model with the correlation among DBH,height and crown diameter,the result showed that extremely significant correlation existed between DBH,height and crown diameter.Aanlysis of the distribution pattern showed that most Bruguiera sexangula population of the three plots were cluster distribution.At different developmental stages,the distribution pattern in general had a trend from cluster to random,and human activities had great impact on the distribution pattern of young trees.
作者
李茂金
叶储民
陈玉凯
Li Maojin;Ye Chumin;Chen Yukai(Hainan Forestry group Co.,Ltd,Haikou Hainan 570205;Ministry of Education Key Laboratory for Ecology of Tropical Islands,College of Life Sciences,Hainan Normal University,Haikou Hainan 571158)
出处
《热带林业》
2022年第2期8-14,共7页
Tropical Forestry
基金
海南省重大科技计划项目(项目编号:ZDKJ202008)“红树林资源保育与生态恢复关键技术研究与应用示范”。
关键词
海莲
种群结构
分布格局
清澜港
Bruguiera sexangula
Population structure
Distribution pattern
Qinglan Port
