中文摘要：

以湖北五峰后河自然保护区1 hm2珍稀濒危植物群落为对象,应用固定样方法调查了群落种类组成和结构,并对主要组成树种的种群结构和更新特性进行分析,同时对群落所处的演替阶段进行了探讨。结果表明：①依据胸径频率分布的形状,将19个主要树种种群结构归纳为4种类型：单峰衰退型、间歇型、倒-J型、L型。②单峰衰退型树种在群落中几乎无更新苗出现;间歇型和倒-J型种群为主要的林冠构成种,通过实生苗繁殖和萌蘖繁殖两种方式进行更新;L型分布中常绿树种主要以实生苗方式更新。③除白辛外,稀有濒危植物能长期稳定地在群落中存在,群落可能处于演替顶极阶段。

英文摘要：

This study was made on a permanent plot in a rare plant community in the Houhe Nature Reserve,central China.The authors identified and measured all trees in the plot to quantify the community structure and regenerative characteristics of the forest.The forest community was comprised of 19 major tree species including 5 rare and endangered species.The population structures of the different tree species were categorized into four regeneration types based on their size-class frequency distribution patterns：Unimodal type,Sporadic type,Inverse-J type,L type.Unimodal type species were the lack of regeneration seedlings.The sporadic type species and inverse-J type species were major trees in canopy,which could regenerate through seeds and sprouts from roots and stumps.The evergreen broad-leaved tree species with L type had few size classes,which sexual reproduction was preponderant.The successional stage of the forest was classified as a climax community,the rare and endangered tree species were stable and they would live for a long time in the community.