象山无居民岛屿植物区系和群落构成
PDF下载 (113)李赛强,孙 楠,沈思逍,李渭强,孙喜庆,尹涵滨,程晓燕,王建庆,卞正平,杨晓东.象山无居民岛屿植物区系和群落构成[J].宁波大学学报(理工版),2024,37(5):79-87.DOI:10.20098/j.cnki.1001-5132.2023.1240
LI Saiqiang,SUN Nan,SHEN Sixiao,LI Weiqiang,SUN Xiqing,YIN Hanbin,CHENG Xiaoyan,WANG Jianqing,BIAN Zhengping,YANG Xiaodong.Flora and community composition of uninhabited islands in Xiangshan[J].Journal of Ningbo University(Natural Science & Engineering Edition),2024,37(5):79-87.DOI:10.20098/j.cnki.1001-5132.2023.1240
| Title: | Flora and community composition of uninhabited islands in Xiangshan |
| 作者: | 李赛强, 孙 楠, 沈思逍, 李渭强, 孙喜庆, 尹涵滨, 程晓燕, 王建庆, 卞正平, 杨晓东 |
| Author(s): | LI Saiqiang, SUN Nan, SHEN Sixiao, LI Weiqiang, SUN Xiqing, YIN Hanbin, CHENG Xiaoyan, WANG Jianqing, BIAN Zhengping, YANG Xiaodong |
| 关键词: | 无居民岛屿; 植物区系; 群落构成; 生活型; 多样性 |
| Keywords: | uninhabited islands; flora; community composition; growth form; diversity |
| 分类号: | Q948.2 |
| DOI: | 10.20098/j.cnki.1001-5132.2023.1240 |
| 文献标识码: | A |
| 摘要: | 岛屿因其独特的地理和生态特征拥有丰富的生物多样性. 为了给中国东部象山海域无居民岛屿的植物多样性保护提供基础数据和科学支撑, 本文结合样方和样线方法对浙江省象山县30座无居民岛屿的维管束植物进行了调查, 并分析岛屿植物区系、群落构成和植物物种多样性. 结果表明: (1)研究区共发现维管束植物95科220属304种. (2)岛屿植物属区系成分复杂, 15种区系皆有分布, 热带成分占44.26%, 温带、亚热带成分占55.74%. (3)岛屿植被类型以常绿阔叶林和灌草丛为主, 共有27种植物群落, 乔木层优势物种以马尾松(Pinus massoniana)、青冈(Quercus glauca)和黄檀(Dalbergia hupeana)为主; 灌木层、草本层的优势种取决于其所处的环境. (4)岛屿物种丰富度与面积呈现显著正相关(P<0.001), 但是不同生活型植物之间对面积的变化程度存在差异, 草本变化程度最小, 乔木最大. |
| Abstract: | Islands have rich biodiversity due to their unique geographical and ecological characteristics. In order to provide basic data and scientific basis for the conservation of plant diversity on the uninhabited islands in east China’s Xiangshan County, Zhejiang Province, a combination of quadrat and transect methods was employed to investigate the vascular plants on 30 uninhabited islands in Xiangshan, and statistically analyzed the flora, community composition and plant diversity of the islands. The results show that: (1) A total of 304 species, belonging to 220 genera and 95 families of vascular plants were identified. (2) The floristic composition of the islands is complex, with its distributions covering from all 15 floristic regions, where tropical elements account for 44.26% and temperate and subtropical elements make up 55.74%. (3) The vegetation types of the islands are dominated by shrubs and grasslands, with a total of 27 communities distributed in 30 islands. The dominant species in the tree layer include Pinus massoniana, Quercus glauca, and Dalbergia hupeana, while those in the shrub and herb layers vary according to their specific environments. (4) There is a significant positive correlation between species richness and island area (P<0.001), but the degree of variation in response to area differs among plants of different growth forms, with the smallest variation being in herbs and the largest in trees. |
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| 备注/Memo: | 收稿日期: 2023−12−29. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金面上项目（42371027）; 宁波市重点研发计划暨“揭榜挂帅”项目（2023Z146）. 第一作者: 李赛强, 硕士研究生, 主要研究方向: 植物地理学. E-mail: 2211420010@nbu.edu.cn *通信作者: 杨晓东, 博士/教授, 主要研究方向: 植物地理学. E-mail: xjyangxd@sina.com 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
