摘要
运用植物区系、生活型结构、物种多样性、物种丰富度和物种均匀度等分析方法,对滇东北乌蒙山自然保护区的光叶水青冈群落结构和物种多样性进行研究。结果表明,(1)滇东北的光叶水青冈群落为云南新记录的森林类型,是光叶水青冈群落地理分布的最西部类型。(2)群落中常绿和落叶树种分别为24种和22种,占乔木层物种数的52%和48%,两者大致相当,属典型的常绿-落叶阔叶混交林。(3)样方内的128种维管植物中,滇中、华中成分各占32.03%、68.75%,表明群落的区系成分与华中地区的联系密切,而与云南高原的联系不甚紧密。(4)群落物种以高位芽植物为主,达60种,占56.91%,符合亚热带常绿-落叶阔叶林以中小高位芽植物居多的基本特征。(5)群落中草本层的物种丰富度最大,达52种,而乔木层的Simpson指数0.92,Shannon-Wiener指数3.22,Pielou均匀度指数0.55。(6)光叶水青冈群落的更新与筇竹的开花周期有密切关系,其更新也有明显的周期性。
By analyzing the plant flora, structure of plant life forms, species diversity, species richness and species evenness, the community structure and diversity of Fagus lucida in Wumeng Mountain Nature Reserve in northeastern Yunnan was studied. The results showed that： （ 1 ） Fagus lucida community in northeast of Yunnan Province is a new record forest type in Yunnan, and the westernmost of Fagus lucida community in terms of geo- graphical distribution. （2） The species number of evergreen tree and deciduous tree in the community was 24 and 22, account for 52 % and 48 % respectiveIy in the total species of tree layer. The two species were quite approxi- mate in this community, and it was a typical mixed forest of evergreen and deciduous broad-leave. （3） There were 128 vascular plants in the quadrat , and the component of central Yunnan and central China accounts for 32. 03 % and 68.75 % respectively. That showed that floristic elements in this community had close connection with the central China rather than Yunnan Plateau. （4） The dominant species of the community is phaenerophyte, which had 60 species, account for 56. 91%, and it meet with the basic characteristics of the subtropics mixed for- est of evergreen and deciduous, with middle-micro phanerophyte majority. （5） Species richness of herb layer was the biggest in the community with 52 species, and the tree layer＇ s Simpson index was 0. 92, Shannon-Wiener index was 3.22, Pielou evenness index was O. 55. （6） The renewal of Fagus lucida community have a close rela-tion with the blooming cycle of Qiongzhuea tumidissinoda , and the renewal had distinct periodicity.
出处
《西部林业科学》
CAS
2016年第1期124-130,共7页
Journal of West China Forestry Science
基金
云南昭通北部自然保护区综合科学考察项目09960-206613
关键词
光叶水青冈
筇竹
物种多样性
高位芽植物
乌蒙山自然保护区
Fagus lucida
Qiongzhuea tumidissinoda
species diversity
phanerophyte
Wumeng Mountain Nature Reserve
