湖南江永石灰岩山地青檀群落特征研究  

Study on the Community of Pteroceltis tatarinowii in the Limestone Mountainous of Jiangyong County of Hunan Province

作　　者：周磊[1] 顾建忠[2] 宋云飞 旷仁平[1] 李行娟[1] 刘克明[1] 

机构地区：[1]湖南师范大学生命科学学院,中国湖南长沙410081 [2]常德职业技术学院,中国湖南常德415000 [3]湖南江永县林业局,中国湖南江永425400

出　　处：《生命科学研究》2012年第5期382-388,共7页Life Science Research

基　　金：国家自然科学基金资助项目(30470130);中国科学院知识创新工程重要方向资助项目(KSCX-SW-122);"十一五"国家科技基础平台建设专项(2005DKA21403;2005DKA21006)

摘　　要：研究了湖南江永石灰岩山地青檀(Pteroceltis tatarinowii Maxim)群落的区系组成、地理成分、种类成分的数量特征、生活型及物种多样性特征.结果表明:在2 800 m2青檀群落样方中有维管植物51种,隶属于34科48属.植物地理分布以泛热带成分最多,有13属,占总属数的29.54%;其次是旧世界热带分布类型、北温带分布类型、东亚和北美洲间断分布类型,它们各有5属,各占总属数的11.36%.植物生活型以高位芽植物最多,占70.59%,一年生植物最少,仅为1.96%.群落层次中,以灌木层和草本层物种数所占比例较大.物种多样性分析表明,Shannon-Wiener指数、Simpson指数和PIE指数均表现出Sh>H>T,反映了青檀群落乔木层优势种表现明显,该群落目前相对稳定.对青檀群落的物种构成及资源保护和可持续利用问题进行了讨论.The flora composition,geographical composition,the number of species composition characteris-tics,the life form and species diversity characteristics of the community of Pteroceltis tatarinowii Maxim in the limestone mountainous of Jiangyong county of Hunan province are studied.The results show that： In the sample plot,2 800 m2,Pteroceltis tatarinowii Maxim community have 51 common vascular plants species,belonging to 48 genera and 34 families.Extensive tropical composition,included 13 genera,take up the most plant distribution,29.54% of the total genera;and the old world tropical distribution types,Temperate types and East Asia and North America discontinuous distribution types take the second place,which both have 5 genera and each account for 11.36%.Plants are most phanphytes in the life form,70.59%,and an-nual plants at least,1.96%.At the community level,shrub layer and herb layer take up a significant share.The species diversity analysis shows that,Shannon-Wiener index,Simpson index and PIE index all represent ShHT,which reflect dominant species of the tree layer in the Pteroceltis tatarinowii community perfor-mance obviously,suggesting that this community at present is relatively stable.Resource protection and problems of sustainable use of the Pteroceltis tatarinowii Maxim community are discussed.

关 键 词：石灰岩山地 青檀 区系组成 群落特征 湖南江永县 

分 类 号：Q948.156[生物学—植物学]