不同桉树密度下桉树-阔叶树复层林物种多样性研究  

Species Diversity of Eucalyptus-Broadleaved Compound Forest with different Eucalyptus Densities

作　　者：苏永新 龚益广 王锋 徐明锋 何春梅[3] 梁育兴 王凯 李春永 SU Yongxin;GONG Yiguang;WANG Feng;XU Mingfeng;HE Chunmei;LIANG Yuxing;WANG Kai;LI Chunyong(Guangdong Pearl River Estuary National Nature Reserve Administration of Chinese White Dolphin,Zhuhai,Guangdong 519080,China;Deqing Forest Farm of Guangdong Province,Zhaoqing,Guangdong 526600,China;Guangdong Provincial KeyLaboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China)

机构地区：[1]广东珠江口中华白海豚国家级自然保护区管理局,广东珠海519080 [2]广东省德庆林场,广东德庆526600 [3]广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东广州510520

出　　处：《林业与环境科学》2022年第2期33-41,共9页Forestry and Environmental Science

基　　金：广东省森林生态综合示范园(省德庆林场森林质量提升示范园)项目。

摘　　要：采用多响应置换检验、指示种分析等多元统计方法,分析桉树-阔叶树复层林中不同林分的物种多样性、物种组成和指示植物,揭示不同林分的物种多样性变化规律。结果表明:低桉树密度林的物种多样性和个体数稍微高于中、高桉树密度林,中等桉树密度林的均匀度高于其他两者;3种林分的个体数主要组成均为优势种,但物种主要组成为常见种和偶见种;在种面积曲线拟合的结果中,同等面积下,不同桉树密度林分拟合的物种数大小主要为低>中>高;在单因素方差分析中,物种多样性、均匀度、优势度、个体数等指标在不同桉树密度林分间均无显著差异,在多响应置换检验分析中,物种组成与分布在不同桉树密度间有极显著差异;所有林分共有7种指示植物,其中低、高桉树密度林分的指示植物分别有5种、2种,而中等桉树密度林分没有指示值和p值达到标准的指示植物。当桉树密度处于一定范围内时,桉树-阔叶树复层林可维持较高的物种多样性水平。This study used multivariate statistical methods such as multi-response permutation procedures and indicator species analysis to analyze the species diversity,species composition and indicator plants of different stands in the eucalyptus-broadleaved compound forest,revealing the changes of species diversity in different stands.The results showed that the species diversity and number of individuals in the low eucalyptus density forest was slightly higher than that of the medium and high eucalyptus density forest,while the evenness of the medium eucalyptus density forest was higher than the other two.The main plant components of the three stands were dominant species,but the main species components were common species and occasional species.In the species area curve fitting,the number of species fitting of different eucalyptus densities were mainly as follows:low>medium>high.In one-way ANOVA,species diversity,evenness,dominance and number of individuals were not significantly different among different eucalyptus densities.In the multi-response permutation procedures analysis,species composition and distribution were significantly different among different eucalyptus densities.There were 7 indicator plants in all stands,of which there were 5 and 2 indicator plants in low and high eucalyptus density stands,respectively,while there were no indicator plants in medium eucalyptus density stands with both indicator values and p values above the standard.When the eucalyptus density was within a certain range,the eucalyptus-broadleaved compound forest could maintain a high level of species diversity.

关 键 词：桉树密度 桉树-阔叶树复层林 物种多样性 物种组成 物种分布 

分 类 号：Q948.15[生物学—植物学]