乌蒙山保护区峨眉栲、三脉水丝梨群落结构及物种多样性  

Community Structure and Species Diversity of Castanopsis platyacantha and Sycopsis triplinervia Forest in Wumeng Mountains Reserve

作　　者：古朝山 陈娜 杨科 刘恩德[2] 李伟 GU Chaoshan;CHEN Na;YANG Ke;LIU Ende;LI Wei(Management and Conservation Bureau of Yunnan Wumeng Mountain National Nature Reserve,Zhaotong 657000,Yunnan,China;Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,Yunnan,China)

机构地区：[1]云南乌蒙山国家级自然保护区管护局,云南昭通657000 [2]中国科学院昆明植物研究所,云南昆明650201

出　　处：《贵州林业科技》2024年第2期50-55,62,共7页Guizhou Forestry Science and Technology

基　　金：云南乌蒙山国家级自然保护区2020年中央财政林业改革发展资金项目。

摘　　要：以乌蒙山保护区中山湿性常绿阔叶林峨眉栲(Castanopsis platyacantha)、三脉水丝梨(Sycopsis triplinervia)群落为研究对象,采用群落生态学方法分析群落结构及物种多样性。结果表明:(1)样地内调查到维管束植物175种,隶属64个科103个属,种子植物科、属的分布区划为12个类型,总体上可分为广布型、热带型、温带型;(2)群落乔木层、灌木层、草本层优势种分别为峨眉栲和三脉水丝梨、筇竹(Chimonobambusa tumidissinoda)、骤尖楼梯草(Elatostema cuspidatum),物种重要值与数量呈现出不同程度的正相关,相关强度表现为灌木层>草本层>乔木层;(3)群落Shannon-Weiner多样性指数和Pielou均匀度指数呈现出灌木层>草本层>乔木层,Margalef丰富度指数和Simpson优势度指数表现为乔木层>草本层>灌木层;(4)整个群落以第Ⅰ龄级和高度Ⅰ级树木占优势,而乔木层则以第Ⅱ龄级和高度Ⅱ级树木占优势。群落物种丰富,优势种明显,生长稳定,有利于维持保护区生态系统稳定和生物多样性安全。Here the community ecology was used to explore the community structure and species diversity of Castanopsis platyacantha and Sycopsis triplinervia in the mid-montane humid ever-green broad-leaved forest in Wumeng Mountains Nature Reserve Areas in Yunnan Province,China.The results showed that:(1)There were 175 species of vascular plants in the sample plot,belonging to 64 families and 103 genera.The distribution areas of seed plant families and genera were then divided into 12 types,including the widespread,tropical and temperate type.(2)The dominant tree species in the tree layer,shrub layer and herbaceous layer of the community were Castanopsis platyacantha and Sycopsis triplinervia,Chimonobambusa tumidissinoda,Elatostema cuspidatum,respectively.The importance and quantity of species showed the varying degrees of positive correlation.The correlation intensity was ranked in the descending order of the shrub layer>herbaceous layer>tree layer.(3)Shannon-Weiner diversity index and Pielou evenness index of the community were ranked in the descending order of the shrub layer>herbaceous layer>tree layer,whereas,Margalef richness and Simpson dominance indexes were the tree layer>herbaceous layer>shrub layer.(4)The trees of the first age and height class I were dominated in the community,while the second age and height classⅡwere in the tree layer.The community rich in species with the stable growth was conducive to the stability of the ecological system and biodiversity in the nature reserve.

关 键 词：乌蒙山保护区 中山湿性常绿阔叶林 峨眉栲 三脉水丝梨 群落结构 

分 类 号：S718.542[农业科学—林学]