2002-2015年武夷山中亚热带常绿阔叶林乔木的物种组成及其多样性  

Species Composition and Diversity of Subtropical Evergreen Broad-leaved Forest Trees in Wuyi Mountain during 2002-2015

作　　者：许新宇 关昶翔 兰思仁[1] Xu Xinyu;Guan Changxiang;Lan Siren(College of Landscape,Fujian Agriculture and Forestry University,Fuzhou,350002)

机构地区：[1]福建农林大学园林学院,福州350002

出　　处：《分子植物育种》2023年第12期4151-4157,共7页Molecular Plant Breeding

基　　金：福建省第一批双创人才第一阶段支持经费项目(No.K861501A)资助。

摘　　要：本研究以武夷山国家公园中亚热带常绿阔叶林2400 m2固定样地的乔木物种为研究对象,以间隔13年的野外调查数据为基础,对乔木树种进行统计分析,探究其物种组成、优势树种和物种多样性的变化特点。结果表明:样地内乔木优势种在2002年是米槠(Castanopsis carlesii),到2015年变为少叶黄杞(Engelhardtia fenzlii),而甜槠(Castanopsis eyrei)处于亚优势种地位没有改变;在13年间,物种数量大幅减少,α多样性指数(物种多样性指数,多度指数和种间相遇几率)随时间均呈下降的趋势,仅均匀度指数略有上升;约有26种乔木物种在样地中消失,只有6个新的乔木物种进入样地,表明物种竞争激烈,替代明显。这十多年间物种的变化更替可能与树种本身生长特性有密切关系,也有可能与气候变化或者极端气候(如2008的冰雪灾害)有关。In this study,the tree species in the 2400 m?fixed plot of the subtropical evergreen broad-leaved forest in Wuyi Mountain National Park were investigated.Based on the field survey data at an interval of 13 years,the tree species were statistically analyzed to explore the change characteristics of species composition,dominant tree species and species diversity.The results showed that:Castanopsis carlesi was the dominant tree species in 2002,but it changed to Engelhardtia fenzli in 2015,while Castanopsis eyrei was the subdominant tree species.During the 13 years,the number of species decreased significantly,and theαdiversity index(species diversity index,abundance index,and interspecific encounter probability)decreased with time,while the evenness index increased slightly.About 26 species of arbor disappeared in the sample plot,and only 6 new species of arbor entered the sample plot,indicating intense competition among species and obvious substitution.The change of species over the past decade may be closely related to the growth characteristics of the tree species themselves,or it may be related to climate change or extreme weather(such as the snow and ice disaster in 2008).

关 键 词：常绿阔叶林 物种组成 优势种 气候 重要值 

分 类 号：S718.54[农业科学—林学]