后河自然保护区珍稀植物群落结构及更新特性  

Population structure and regenerative characteristics of major tree species of rare plant community in Houhe Nature Reserve

作　　者：周赛霞[1] 江明喜[2,3] 鲍大川[2,4] 陶敏[2,4] 黄汉东[2,3] 

机构地区：[1]江西省中国科学院庐山植物园,江西庐山332900 [2]中国科学院武汉植物园,武汉430074 [3]中国科学院水生植物与流域生态重点实验室,武汉430074 [4]中国科学院研究生院,北京100049

出　　处：《广西植物》2011年第2期209-216,共8页Guihaia

基　　金：国家自然科学基金(30670368,31070465);国家科技支撑计划(2006BAC10B01)~~

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。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.

关 键 词：种群结构 更新 珍稀植物群落 萌蘖 

分 类 号：Q948.1[生物学—植物学]