植物生态学报 ›› 2022, Vol. 46 ›› Issue (4): 405-415.DOI: 10.17521/cjpe.2021.0374

• 研究论文 • 上一篇    下一篇

海南热带云雾林附生维管植物对宿主的选择性

王艺宸1, 邓芝燕1, 张守信1, 肖楚楚1,*(), 冯广1, 龙文兴1,*(), 刘积史2   

  1. 1海南大学林学院, 海南五指山森林生态系统国家定位观测研究站, 热带特色林木花卉遗传与种质创新教育部重点实验室, 海口 570228
    2海南省林业科学研究院(海南省红树林研究院), 海口 571100
  • 收稿日期:2021-10-15 接受日期:2022-02-18 出版日期:2022-04-20 发布日期:2022-02-18
  • 通讯作者: 肖楚楚,龙文兴
  • 作者简介:(993951@hainanu.edu.cn)
    *(oklong@hainanu.edu.cn);
  • 基金资助:
    国家自然科学基金(31870508);海南省自然科学基金(320QN199)

Host tree selection by vascular epiphytes in tropical cloud forest of Hainan Island, China

WANG Yi-Chen1, DENG Zhi-Yan1, ZHANG Shou-Xin1, XIAO Chu-Chu1,*(), FENG Guang1, LONG Wen-Xing1,*(), LIU Ji-Shi2   

  1. 1College of Forestry, Wuzhishan National Long-Term Forest Ecosystem Monitoring Research Station, Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Trees and Ornamental Plants, Hainan University, Haikou 570228, China
    2Hainan Academy of Forestry (Hainan Academy of Mangrove), Haikou 571100, China
  • Received:2021-10-15 Accepted:2022-02-18 Online:2022-04-20 Published:2022-02-18
  • Contact: XIAO Chu-Chu,LONG Wen-Xing
  • Supported by:
    National Natural Science Foundation of China(31870508);Hainan Provincial Natural Science Foundation(320QN199)

摘要:

附生维管植物是热带森林中重要的特征性组分, 研究附生维管植物对宿主树的选择性对热带森林生物多样性及生态系统保护有重要意义。该研究以海南热带雨林国家公园霸王岭片区热带云雾林中的附生维管植物为研究对象, 通过设置21个20 m × 20 m的固定样地, 调查样地内所有胸径>1 cm的乔、灌木的数量、种类、胸径、植株高、基质类型及其上生长的附生维管植物的数量、种类, 用混合线性模型、单因素方差、附生选择性指数分析附生维管植物分布与宿主树种、胸径、高度、基质类型(裸树皮、苔藓、凋落物及土壤)的关系。结果表明: 在热带云雾林8 400 m2样地内, 附生维管植物共计51种2 650株, 附生兰科植物和附生蕨类植物为优势类群, 附着在10.6%的个体木上; 附生维管植物多度和丰富度与宿主树胸径显著正相关; 多度较大的琼崖石韦(Pyrrosia eberhardtii)、流苏贝母兰(Coelogyne fimbriata)、阴石蕨(Davallia repens)、蔓九节(Psychotria serpens)对宿主树种表现出一定的选择性, 显著偏好1-4个树种; 附生维管植物对轻基质类型(苔藓植物)也存在显著偏好, 70%以上的附生维管植物生存在苔藓基质上。

关键词: 附生维管植物, 宿主选择性, 热带云雾林, 苔藓植物, 宿主特征

Abstract:

Aims Epiphytic vascular plants are characteristically important components of tropical forests. Studying the selectivity of epiphytic vascular plants for host trees is key to understanding the underlying mechanisms of biodiversity conservation and ecosystem functioning.

Methods All trees and shrubs with a diameter at breast height (DBH) >1 cm were recorded for the number, species identity, DBH, plant height and possession of substrate types in 21 fixed 20 m × 20 m plots, and the epiphytic vascular plants growing on them were measured for their number and types, in the Bawangling range of the Hainan Tropical Rainforest National Park. The relationships of epiphyte distribution with host species identity, DBH, plant height, and substrate types (bare bark, bryophytes, litter and soil) were analyzed with the methods of mixed linear model, one-way analysis of variance and selectivity index.

Important findings In all the sample plots with a total area of 8 400 m2, a total number of 2 650 epiphytic vascular plants were recorded, belonging to 51 species. Epiphytic orchids and epiphytic ferns were found to be the dominant taxa, occurring on 10.6% of individual trees. Pyrrosia eberhardtii, Coelogyne fimbriata, Davallia repens, and Psychotria serpens showed some selectivity for host trees, with significant preferences for host trees from one to four species. The epiphytic vascular plants also showed a significant habitat preference for light substrate types (bryophytes), with more than 70% of the epiphytes occurring on mossy substrate.

Key words: epiphytic vasculars, host-tree selection, tropical cloud forest, bryophyte, host-tree characteristics