江西官山亚热带次生常绿阔叶林物种组成与群落结构特征  

Species Composition and Community Structures of Subtropical Evergreen Broad-leaved Forests in Guanshan,Jiangxi Province,China

作　　者：王倩 易伶俐 陈琳 彭巧华 欧阳园兰 龚超 曾小霞 杨清培[2] 宋庆妮[2] 刘骏[2] WANG Qian;YI Lingli;CHEN Lin;PENG Qiaohua;OUYANG Yuanlan;GONG Chao;ZENG Xiaoxia;YANG Qingpei;SONG Qingni;LIU Jun(Administration of Jiangxi Guanshan National Nature Reserve,Yichun,Jiangxi 336000,China;Jiangxi Provincial Key Laboratory for Bamboo Germplasm Resources and Utilization,Jiangxi Agricultural University,Nanchang 330045,China)

机构地区：[1]江西官山国家级自然保护区管理局,江西宜春336000 [2]江西农业大学江西省竹子种质资源与利用重点实验室,江西南昌330045

出　　处：《生物灾害科学》2022年第2期199-209,共11页Biological Disaster Science

基　　金：财政部、环保部国家生物多样性野外监测示范基地改造项目(9131205274)。

摘　　要：【目的】常绿阔叶林是我国亚热带地区的地带性植被,但由于长期的人为干扰,导致地许多原始林变为次生林,为了更好地研究亚热带地区次生常绿阔叶林的恢复过程和多样性维持机制。【方法】按照美国史密森研究院热带森林科学研究中心(Center for Tropical Forest Science,CTFS)大型森林动态样地建设标准。在官山自然保护区建立12 hm^(2)的次生常绿阔叶林动态监测样地,调查样地内DBH≥1 cm的木本植物,分析其物种组成、区系特征、径级结构等群落特征。【结果】1)样地内木本植物种类丰富且稀有种较多,共有65科139属312种,其中稀有种148种,约占总物种数的1/2;2)植物区系地理成分多样,有热带向温带过渡的性质,属水平上有28个类型(包含变型),热带区系成分占总属数的59.71%,温带区系成分占37.41%;3)群落径级分布呈“金字塔”型,属于增长型群落,优势种中大部分物种径级结构也呈“金字塔”型,处于增长状态。【结论】官山次生常绿阔叶林物种组成丰富,稀有种比例高,群落更新良好。[Objective]Evergreen broad-leaved forest is a zonal vegetation in subtropical areas of China.However,many primitive forests have become secondary forests,due to long-term human disturbance.In order to better monitor the restoration process of secondary evergreen broad-leaved forest in subtropical areas and reveal the mechanism of biodiversity maintenance.[Method]According to the construction standard of large-scale forest dynamic sample plot of Center for Tropical Forest Science(CTFS)of Smithsonian Institution,a 12 hm^(2) secondary evergreen broad-leaved forest dynamic monitoring sample plot was established in Guanshan National Nature Reserve to investigate woody plants with DBH≥1 cm,and analyze their species composition,flora characteristics,diameter class structures and other community features.[Results](1)The dynamic plot had rich species and rare species.There were 312 species in 65 families and 139 genera,of which 148 species were rare species,accounting for about half of the total number of species;(2)The flora and geographic components were diverse,with the nature of transition from tropical to temperate.There were 28 types(including variants)at the genus level.The tropical flora accounted for 59.71%of the total genera and the temperate flora accounted for 37.41%;(3)The diameter class distribution of the whole plant in thecommunity was a“pyramid”type,and the forests were in a growing stage.The diameter class structure of most dominant species had the same trend.[Conclusion]In summary,Guanshan secondary evergreen broad-leaved forest was rich in species composition,with a high proportion of rare species and good community regeneration.

关 键 词：物种丰富度 种-多度格局 种-面积曲线 区系特征 径级结构 

分 类 号：S718.542[农业科学—林学]