闽北不同发育阶段青冈各林层树种组成与多样性  

Composition and Diversity of Tree Species in Different Forest Layers of Cyclobalanopsis Glauca at Different Development Stages in Northern Fujian

作　　者：陈杰 CHEN Jie(Jianyang Fanqiao State Owned Forest Farm of Fujian Province,Nanping 354200,Fujian,China)

机构地区：[1]福建省建阳范桥国有林场,福建南平354200

出　　处：《亚热带资源与环境学报》2023年第4期34-41,共8页Journal of Subtropical Resources and Environment

基　　金：中央财政林业改革发展资金(闽2019TG01号);南平市自然科学基金联合资助项目(2019J11)。

摘　　要：本研究采用国际林联(IUFRO)的林分垂直分层标准,对福建省延平区葫芦山村青冈次生林6个不同恢复阶段的群落,探究不同林层的树种组成与多样性特征。结果显示,群落林木物种丰富,共有89种,隶属于32科56属。林分上层物种丰富度指数、Simpson优势度指数、Shannon多样性指数和Pielou均匀度指数分别为1.082~1.599、0.438~0.629、0.628~1.127、0.906~0.982,在上层所有树种中,重要值排前5位的为青冈、栲树、马尾松、木荷、甜槠;中层的物种丰富度指数、Simpson优势度指数、Shannon多样性指数和Pielou均匀度指数依次为1.363~4.102、0.572~0.871、0.911~2.424、0.860~0.961,重要值排前5位的为青冈、木荷、栲树、福建青冈、石栎;下层物种丰富度指数、Simpson优势度指数、Shannon多样性指数和Pielou均匀度指数依序为2.421~4.017、0.751~0.885、1.757~2.445、0.825~0.928,层内重要值排前5位的为木荷、山矾、柳叶连蕊茶、青冈、白花苦灯笼。研究结果说明,次生青冈林已形成多树种混交的复层异龄林结构,林木各层均具有较高的物种丰富度,随着林分发育,物种数表现出“上层中间底两头高,中层逐渐减少,下层较稳定”的特征。青冈是各阶段中上层的优势种,下层林分大多为乔木树种,木荷的重要值最大。本研究揭示了天然次生青冈林不同发育时期各层的树种组成与多样性特征,可为松林改造、营造乡土树种和经营管理提供参考。This study revealed the tree species composition and diversity characteristics of each layer of natural secondary Cyclobalanopsis glauca forest at different development stages.IUFRO was adopted for six communities in different restoration stages of Cyclobalanopsis glauca secondary forest in Hulushan village,Yanping District,Fujian Province.According to the results,there are 89 species in the community,belonging to 32 families and 56 genera.The species richness index,Simpson dominance index,Shannon diversity index and Pielou evenness index in the upper layer of the stand are 1.082~1.599,0.438~0.629,0.628~1.127 and 0.906~0.982,respectively.Among all the tree species in the upper layer,the top 5 important values are Cyclobalanopsis glauca,Castanopsis fargesii,Pinus massoniana,Schima superba and Castanopsis eyrei.The species richness index,Simpson dominance index,Shannon diversity index and Pielou evenness index in the middle layer were 1.363~4.102,0.572~0.871,0.911~2.424 and 0.860~0.961,respectively.The top five important values were Cyclobalanopsis glauca,Schima superba,Castanopsis fargesii,Cyclobalanopsis glauca and Lithocarpus glaber.The species richness index,Simpson dominance index,Shannon diversity index and Pielou evenness index in the lower layer are 2.421~4.017,0.751~0.885,1.757~2.445 and 0.825~0.928.The top five important values in the layer are Schima superba,Symplocos sumuntia,Camellia salicifolia,Cyclobalanopsis glauca and Tarenna mollissima.The secondary Cyclobalanopsis glauca forest has formed a multi-layer different age forest structure with mixed tree species,and each layer of the forest has high species richness.With the development of the stand,the number of species shows the characteristics of“the upper layer is high at both ends of the middle and bottom,the middle layer is gradually reduced,and the lower layer is relatively stable”.Cyclobalanopsis glauca is the dominant specie in the middle and upper layers of each stage.Most of the lower stands are tree species,and the important value of Sc

关 键 词：青冈林 次生林 树种组成 物种多样性 

分 类 号：S718.54[农业科学—林学]