福建大型海岛山体植物组成及其空间特征影响因素研究  

Study on the Plants Composition and Affecting Factors of Spatial Characteristics of Large-scale Island Mountains in Fujian Province

作　　者：谢艳秋 黄晖[1,2] 曾纪毅[1] 张群 杨铭 邓传远 XIE Yanqiu;HUANG Hui;ZENG Jiyi;ZHANG Qun;YANG Ming;DENG Chuanyuan(College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China;2Fujian College of Water Conservancy and Electric Power, Sanming, Fujian 366000, China)

机构地区：[1]福建农林大学园林学院,福州350002 [2]福建水利电力职业技术学院,福建三明366000

出　　处：《西北植物学报》2021年第12期2142-2152,共11页Acta Botanica Boreali-Occidentalia Sinica

基　　金：福建省区域发展科技计划(2018Y3006);福建农林大学艺术学院园林学院学科专业建设(YSYLbdpy3);福建农林大学科技创新专项基金(CXZX2019086)。

摘　　要：为了明确大型海岛的植物资源及其空间特征影响因素,该研究以福建省大型海岛海坛岛为对象,采用样线法和样方法实地调查岛上20座山体的植物组成、生活型与属的区系地理成分,并采用Spearman相关分析、方差分解与多元回归等方法,解释空间特征对物种丰富度、不同类群植物(生活型、属的区系地理成分)和山体间Beta多样性的影响。结果表明:(1)海坛岛山体共有植物110科381属541种,物种丰富度差异较大。(2)海坛岛山体植物生活型以矮小型高位芽和一年生植物为主;在地理分布上,海坛岛山体植物区系地理成分复杂,联系广泛,具有强烈的热带亲缘关系。(3)海拔、周长面积比是影响海坛岛20个山体总的物种丰富度与不同类群植物(生活型、属的区系地理成分)物种丰富度分布格局的显著因子。(4)海坛岛山体间Beta多样性随着面积比、海拔比的增加而增加,随着周长面积比比值的增加而减少。研究认为,海坛岛山体植物组成并不总是受面积的影响,海拔和边缘效应也是重要的影响因素。In order to identified the plant resources and their influencing factors of spatial characteristics of large-scale islands,we investigated the Haitan Island,a large-scale island in Fujian Province.Combining the line transect method and quadrat sampling method,the plant composition,life forms and floristic geographical components among 20 mountains of this island was investigated.In addition,spearman correlation analysis,variance decomposition and multiple regression were adopted to explain the effects of spatial characteristics on species richness,different groups of plants(life forms,floristic and geographical components of genera)and beta diversity among 20 mountains.The result shows that:(1)there are 541 species of which richness varies greatly belonging to 381 genera and 110 families in 20 mountains of Haitan Island.(2)According to the classification of life forms,nanophanerophytes and therophytes make up the majority of the species.Meanwhile,complex geographical complexity,extensive connections,and strong tropical kinship constituted the characteristics of floristic geography.(3)Elevation and perimeter area ratio are significant factors affecting the species richness and the distribution pattern of plant groups(life forms,floristic geographical of genera)in large-scale island mountains.(4)Beta diversity increased with the increase of area ratio and elevation ratio,but decreased with the increase of perimeter area ratio.The study reveals that the plants'composition of large-scale island mountains is not always affected by area,and elevation and edge effects are also important influencing factors.

关 键 词：植物区系地理 物种丰富度 空间特征 物种相似性 大型海岛山体 

分 类 号：Q948.156[生物学—植物学] Q948.5