广西南亚热带灌丛群落物种组成与多样性特征  

Shrub Communities and Species Diversity Characteristics in the Southern Subtropical Zone in Guangxi

作　　者：鲁光荣 陈芳清[1] 吕坤 吴宇 黄祥丰 文如歌 LU Guangrong;CHEN Fangqing;Lü Kun;WU Yu;HUANG Xiangfeng;WEN Ruge(China Three Gorges University,Yichang,Hubei 443002,China;Three Gorges Botanical Garden Management Office,Yichang,Hubei 443111,China)

机构地区：[1]三峡大学,湖北宜昌443002 [2]三峡植物园管理处,湖北宜昌443111

出　　处：《林业资源管理》2022年第3期89-95,共7页Forest Resources Management

基　　金：国家科技基础性工作专项(2015FY110300);三峡大学研究生科研创新基金项目(SDYC2016122)。

摘　　要：对广西南亚热带10种分布较广泛的灌丛群落物种组成、群落结构、区系分布、生活型及物种多样性进行了调查与分析,以揭示该地区灌丛群落的结构组成与多样性特征。结果表明:所调查的灌丛群落共分布有105个植物种,包含64种灌木植物,41种草本植物,隶属47科96属。灌木植物的优势科为豆科和蔷薇科,所分布物种数占比分别为14.06%和10.94%;草本植物的优势科为禾本科和菊科,所分布物种数占比分别为29.27%和21.95%。物种丰富度指数(S)以马甲子和老虎刺灌丛最高,雀梅藤和光荚含羞草灌丛最低。老虎刺灌丛的Simpson多样性指数(D)、Shannon-Wiener多样性指数(H′)和Pielou均匀度指数(J)均较高。区系组成以热带分布类型最多,占比70.79%。生活型组成以高位芽植物为主,占比59.05%。该区域灌丛群落植物种类较为丰富,种属组成相对分散,具有典型的南亚热带特征。The species composition, community structure, floristic distribution, life forms and species diversity of 10 widely distributed shrub communities in the southern subtropical zone of Guangxi were investigated and analyzed in order to reveal the structure and diversity of shrub communities.The results showed that 105 species were distributed in the investigated shrub communities, including 64 shrub species and 41 herbaceous species, belonging to 96 genera and 47 families.The dominant shrub families were Fabaceae and Rosaceae, with 14.06% and 10.94% of the total species, respectively.The dominant herbaceous families were Poaceae and Asteraceae, with 29.27% and 21.95% of the total species, respectively.The species richness index(S) was the highest in the community of Paliurusramosissimus and Pterolobium punctatum,and the lowest in the community of Sageretia thea and Mimosa bimucronata.The Simpson diversity index(D),Shannon-Wiener diversity index(H ’) and Pielou evenness index(J) were higher in Pterolobium punctatum community.The floristic composition of tropical distribution was the highest, accounting for 70.79%.The life-form composition was dominated by the phanerophytes accounting for 59.05%.The shrub community in this zonewas rich in plant species and relatively dispersed, with typical characteristics of southern subtropical zone.

关 键 词：灌丛群落 南亚热带 物种多样性 广西 

分 类 号：S718.54[农业科学—林学]