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不同程度人为干扰对古田山森林群落谱系结构的影响
引用本文:宋凯,米湘成,贾琪,任海保,Dan Bebber,马克平. 不同程度人为干扰对古田山森林群落谱系结构的影响[J]. 生物多样性, 2011, 19(2). DOI: 10.3724/SP.J.1003.2011.07030
作者姓名:宋凯  米湘成  贾琪  任海保  Dan Bebber  马克平
作者单位:1. 中国科学院植物所环境与植被变化国家重点实验室,北京,100093;中国科学院研究生院,北京,100049
2. 中国科学院植物所环境与植被变化国家重点实验室,北京,100093
3. 中国科学院植物所环境与植被变化国家重点实验室,北京,100093;浙江师范大学化学与生命科学学院,浙江金华,321004
4. Earthwateh Institute,Mayfield House,256 Banbury Road,Oxford,OX2 7DE,United Kingdom
基金项目:Earthwatch Institute Programm“Quantifyand Monitor Carbon Pools and Fluxes to Assess the Impact of Climate Change on Subtropical Forests Under Different Anthropogenic Disturbances”
摘    要:群落谱系结构包含群落发育的历史信息,能从新的角度反映群落形成的生态过程.作者在浙江古田山自然保护区亚热带常绿阔叶林中选择了人为干扰强度不同的4种群落类型,以20 m×20 m为研究尺度探讨了不同干扰程度对群落谱系结构的影响.结果表明,人工林(类型Ⅰ)谱系结构发散;但间伐林(类型Ⅱ)、自然恢复林(类型Ⅲ)以及自然老龄林(类型Ⅳ)谱系结构聚集,且以类型Ⅱ和Ⅳ聚集度最高.进一步分析不同径级谱系结构发现,在中小径级(DBH≤5 cm和5 cm10 cm时,除了类型Ⅳ,其他3种群落都是谱系结构发散,这反映了在恢复早期种子扩散对这些林型群落构建影响较大:而皆伐后的演替和间伐增加了群落生境异质性,生境过滤作用增强,使类型Ⅱ、Ⅲ群落中小径级谱系结构表现为聚集;类型Ⅳ群落不同径级谱系结构均表现为聚集,可能与其稳定的生境过滤作用有关.

关 键 词:群落结构  谱系发散  谱系聚集  径级结构  种子传播  生境过滤

Variation in phylogenetic structure of forest communities along a human disturbance gradient in Gutianshan forest, China
Kai Song,Xiangcheng Mi,Qi Jia,Haibao Ren,Dan Bebber,Keping Ma. Variation in phylogenetic structure of forest communities along a human disturbance gradient in Gutianshan forest, China[J]. Biodiversity Science, 2011, 19(2). DOI: 10.3724/SP.J.1003.2011.07030
Authors:Kai Song  Xiangcheng Mi  Qi Jia  Haibao Ren  Dan Bebber  Keping Ma
Affiliation:Kai Song1,2,Xiangcheng Mi1,Qi Jia1,3,Haibao Ren1,Dan Bebber4,Keping Ma1 1 State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China 2 Graduate University of the Chinese Academy of Sciences,Beijing 100049,China 3 College of Chemistry and Life Science,Zhejiang Normal University,Jinhua,Zhejiang 321004,China 4 Earthwatch Institute,Mayfield House,256 Banbury Road,Oxford,OX2 7DE,United Kingdom
Abstract:Community phylogenetic structure contains information about evolutionary relationships among coexisting species in a community. Studies on community phylogenetic structure provide new insights into ecological processes and the mechanisms underlying community restoration. We compared the phylogenetic structure of forest communities along a human disturbance gradient using data from 12 1-ha plots in secon-dary forests within the Gutianshan National Nature Reserve, Zhejiang Province, China. We found that, at t...
Keywords:community composition  phylogenetically overdispersed  phylogenetically clustered  diameter classes  seed dispersal  habitat filter  
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