植物生态学报 ›› 2019, Vol. 43 ›› Issue (3): 217-226.doi: 10.17521/cjpe.2019.0003

• 研究论文 • 上一篇    下一篇

功能多样性和谱系多样性对热带云雾林群落构建的影响

程毅康1,张辉1,王旭1,龙文兴1,2,*(),李超1,方燕山3,符明期3,朱孔新4   

  1. 1 海南大学热带农林学院, 海口 570228
    2 海南省五指山森林生态系统国家定位观测研究站, 海南五指山 572200
    3 海南省黎母山省级自然保护区管理局, 海南琼中 572900
    4 海南省霸王岭林业局, 海南昌江 572700
  • 收稿日期:2019-01-04 修回日期:2019-02-27 出版日期:2019-03-20 发布日期:2019-05-30
  • 通讯作者: 龙文兴 ORCID:0000-0002-9195-5878 E-mail:oklong@hainanu.edu.cn
  • 基金资助:
    国家自然科学基金(31660163);国家自然科学基金(31870508);海南省自然科学基金(312064);海南省自然科学基金(2016CXTD003D)

Effects of functional diversity and phylogenetic diversity on the tropical cloud forest community assembly

CHENG Yi-Kang1,ZHANG Hui1,WANG Xu1,LONG Wen-Xing1,2,*(),LI Chao1,FANG Yan-Shan3,FU Ming-Qi3,ZHU Kong-Xin4   

  1. 1 Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
    2 National Positioning Observation and Research Station of Forest Ecosystem, Wuzhishan, Hainan 572200, China
    3 Administration of Limushan Provincial Natural Reserve, Qiongzhong, Hainan 572900, China
    4 Forestry Bureau of Bawangling, Changjiang, Hainan 572700, China
  • Received:2019-01-04 Revised:2019-02-27 Online:2019-03-20 Published:2019-05-30
  • Contact: LONG Wen-Xing ORCID:0000-0002-9195-5878 E-mail:oklong@hainanu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(31660163);Supported by the National Natural Science Foundation of China(31870508);The Natural Science Foundation of Hainan Province, China(312064);The Natural Science Foundation of Hainan Province, China(2016CXTD003D)

摘要:

近年来, 功能多样性和谱系多样性为探究群落构建机制提供了新方法。为了更准确地了解海南岛高海拔热带云雾林群落构建机制, 该研究以海南岛霸王岭热带云雾林为对象, 测定7个环境因子和13个植物功能性状。利用主成分分析(PCA)筛选环境因子, 以霸王岭、尖峰岭和黎母山热带云雾林分布物种建立区域物种库, 结合模型, 分析Rao二次熵(RaoQ)和平均成对谱系距离(MPD)变化对植物群落构建的影响。结果表明: 林冠开阔度、土壤全磷含量和坡度是影响植物群落构建的关键环境因子。多数功能性状的系统发育信号很低且不显著, 说明热带云雾林群落的系统发育关系与功能性状随历史进程变化不一致。RaoQMPD的实际观测值都显著低于期望值, 且其标准效应值与土壤磷含量显著相关, 说明生境过滤是驱动热带云雾林群落构建的关键因子, 土壤磷含量是群落构建的关键环境筛。

关键词: 群落构建, 功能多样性, 谱系多样性, 环境因子, 热带云雾林

Abstract:
Aims Phylogenetic and functional diversity are important components of species biodiversity, and are thought to play key roles in the mechanisms of community assembly. In this study, we explore the mechanisms of community assembly in tropical cloud forest plant community in Hainan Island, in southern China, using phylogenetic and functional diversity based methods.
Methods We constructed a species pool of 186 woody plant species from three tropical cloud forest sites in Hainan Island. For these species, we measured 13 functional traits and assessed their phylogenetic signals. In addition, we measured seven environmental factors and assessed their relationships using Principal component analysis (PCA). Then we chose Rao’s quadratic entropy (RaoQ) and mean pairwise distance (MPD) indices to examine the effects of functional diversity and phylogenetic diversity on tropical cloud forest community assembly. To do this we compared these indices to expectations under null models that assume neutral community assembly. We used standard effect sizes to evaluate the influence of environmental factors on community assembly.
Important findings Canopy openness, soil total phosphorus content and slope were significant environmental predictors in tropical cloud forest. The phylogenetic signals of most functional traits were very low and not significant, indicating that the phylogenetic relationship and functional traits were not consistent with the change of historical process. The observed values of RaoQ and MPD were significantly lower than expected, and their standard effect sizes were significantly correlated with soil phosphorus content, which suggested that habitat filtering driven by soil phosphorus was the key factor driving the community assembly in tropical cloud forest.

Key words: community assembly, functional diversity, phylogenetic diversity, environment factor, tropical cloud forest