摘要
为了了解广东省珠海市淇澳岛不同林龄的人工种植的无瓣海桑(Sonneratia apetala)林下植物群落多样性,在野外调查的基础上,采用冗余分析、单因素方差分析和方差分解分析方法,利用植物群落的ShannonWiener多样性指数、物种丰富度指数和Whittaker指数,研究不同林龄的人工种植的无瓣海桑林下植物群落多样性及其与环境因素的关系。研究结果表明,林龄为5 a、10 a和16 a的无瓣海桑林下植物群落的Shannon-Wiener多样性指数分别为0.32、0.73和0.78,其Whittaker指数分别为2.82、1.01和0.28,其物种丰富度指数分别为2.09、3.55和5.50,即人工种植的无瓣海桑林的林龄越高,林下植物群落的物种多样性水平越高且变化越小;人工种植的无瓣海桑林植株的数量、胸径和高度、土壤中的全氮、全磷和有机碳含量、无瓣海桑林冠层郁闭度、滩涂高程是影响林下植物群落物种组成及其变化的主要因素。
In order to understand diversity changes of plant communities under different ages'Sonneratia apetala forests in Qi'ao Island,Zhuhai city,Guangdong province,on the basis of field surveys,the methods of redundancy analysis,one-way analysis of variance and variance decomposition analysis,and Shannon-Weaver diversity index,species richness index and Whittaker index were used,the diversity of plant communities under artificially planted 5 years,10 years and 16 years'Sonneratia apetala forests and its relationship with environmental factors were studied.The results showed that the values of Shannon-Weaver diversity index of plant communities under 5 years,10 years and 16 years'Sonneratia apetala forests were 0.32,0.73 and 0.78,their values of Whittaker indexes were 2.82,1.01 and 0.28,and their values of species richness indexes were 2.09,3.55 and 5.50,respectively.That is,the higher the age of the artificially planted Sonneratia apetala forest,the higher the species diversity level of the understory plant community and the smaller the change.The number of plants,diameter at breast height and height of Sonneratia apetala plant,contents of total nitrogen,total phosphorus and organic carbon in soil,canopy density of Sonneratia apetala forest,and beach elevation were the main factors affecting the species compositions of plant communities under Sonneratia apetala forest and their changes.
作者
姜仲茂
辛琨
熊燕梅
生农
廖宝文
JIANG Zhongmao;XIN Kun;XIONG Yanmei;SHENG Nong;LIAO Baowen(Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,Guangdong,P.R.China)
出处
《湿地科学》
CSCD
北大核心
2023年第4期549-554,共6页
Wetland Science
基金
广东省重点领域研发计划项目(2020B020214001)
广州市基础与应用基础研究项目(202201011486)
国家自然科学基金项目(41876094)资助。
关键词
无瓣海桑
物种多样性
林龄
冗余分析
方差分解分析
Sonneratia apetala
species diversity
forest age
redundancy analysis
variance partitioning analysis
