生物多样性 ›› 2024, Vol. 32 ›› Issue (11): 24269.  DOI: 10.17520/biods.2024269  cstr: 32101.14.biods.2024269

• 生物入侵专题 • 上一篇    下一篇

火烧干扰下植物群落系统发育和功能多样性对紫茎泽兰入侵的影响

何林君1,2,3, 杨文静2,3, 石宇豪2,3, 阿说克者莫2,3, 范钰2,3, 王国严1,2,3,*()(), 李景吉1,2,3(), 石松林1,2,3(), 易桂花2,3(), 彭培好2,3()   

  1. 1.成都理工大学地质灾害防治与地质环境保护国家重点实验室, 成都 610059
    2.成都理工大学生态资源与景观研究所, 成都 610059
    3.成都理工大学地理与规划学院, 成都 610059
  • 收稿日期:2024-06-28 接受日期:2024-10-07 出版日期:2024-11-20 发布日期:2025-01-02
  • 通讯作者: E-mail: wangguoyan@cdut.edu.cn
  • 基金资助:
    四川省自然科学基金(25NSFSC1846);地质灾害防治与地质环境保护国家重点实验室自主研究课题(SKLGP2023Z023);国家自然科学基金(31860123);国家自然科学基金(31560153);四川省大学生创新创业训练计划项目(30800-2023DCXM102)

Effects of plant community phylogeny and functional diversity on Ageratina adenophora invasion under fire disturbance

Linjun He1,2,3, Wenjing Yang2,3, Yuhao Shi2,3, Kezhemo Ashuo2,3, Yu Fan2,3, Guoyan Wang1,2,3,*()(), Jingji Li1,2,3(), Songlin Shi1,2,3(), Guihua Yi2,3(), Peihao Peng2,3()   

  1. 1. State Key Laboratory of Geological Hazard Prevention and Control and Geological Environmental Protection, Chengdu University of Technology, Chengdu 610059, China
    2. Institute of Ecological Resources and Landscape Architecture, Chengdu University of Technology, Chengdu 610059, China
    3. College of Geography and Planning, Chengdu University of Technology, Chengdu 610059, China
  • Received:2024-06-28 Accepted:2024-10-07 Online:2024-11-20 Published:2025-01-02
  • Contact: E-mail: wangguoyan@cdut.edu.cn
  • Supported by:
    Sichuan Provincial Natural Science Foundation(25NSFSC1846);Independent Research Project at the State Key Laboratory of Gehazard Prevention and Geoenvironmental Protection(SKLGP2023Z023);National Natural Science Foundation of China(31860123);National Natural Science Foundation of China(31560153);Sichuan Provincial College Student Innovation and Entrepreneurship Training Program(30800-2023DCXM102)

摘要:

全球气候变化下外来植物入侵日益加剧, 从多角度综合分析本地植物群落对入侵的影响, 有助于为入侵物种的生态防控和治理提供依据。本研究以四川攀西地区不同火烧干扰强度的植物群落为研究对象, 在野外调查的基础上, 采用主成分分析(PCA)和广义线性模型(GLMs)等方法分析了生物因子和非生物因子与紫茎泽兰(Ageratina adenophora)入侵的关系。 结果表明: (1)自然状态(未经火烧)植物群落中本地物种系统发育多样性对紫茎泽兰入侵具有极显著抑制作用(P < 0.001); 经历火烧的次生群落中, 较高的本地物种系统发育多样性以及与紫茎泽兰相似性更大的本地物种对紫茎泽兰入侵具有显著抑制作用(P < 0.05), 同时, 定居时间对紫茎泽兰盖度也具有一定的促进作用(P = 0.067)。(2)未经过火烧的群落中, 本地物种-紫茎泽兰叶干物质含量等级距离的增加显著降低紫茎泽兰入侵强度(P < 0.05); 经火烧后, 本地物种-紫茎泽兰株高等级距离的增加显著降低紫茎泽兰入侵强度(P < 0.05)。本研究结果表明, 系统发育多样性持续有效解释了干扰环境中本地植物群落对紫茎泽兰入侵的抵抗力。在火烧干扰前后, 本地物种抵抗紫茎泽兰入侵的群落性状指标会发生转变。

关键词: 入侵抵抗力, 系统发育多样性, 性状等级, 火烧干扰

Abstract

Aims: Exotic plant invasions are intensifying worldwide under global climate change. Comprehensive analysis of the impacts of native plant communities on invasions from multiple perspectives can provide an empirical basis for ecological prevention, control and management of invasive species.

Methods: In this study, we focused on plant communities across a gradient of fire disturbance intensities in the Panxi region of Sichuan, China. Based on field survey data, we employed principal component analysis (PCA) and generalized linear models (GLMs) to assess the relationships of biotic and abiotic factors with invasion intensities of the non-native species Ageratina adenophora.

Results: Native species phylogenetic diversity of the plant communities in the natural state (having not been subjected to fire) extremely significantly suppressed the invasion intensity of A. adenophora (P < 0.001). In the post-fire secondary communities, those with higher phylogenetic diversity and greater functional similarity between the native species and the invader suppressed the invasion of A. adenophora more strongly (P < 0.05). The settlement time also had a marginally significant positive effect on the cover of A. adenophora (P = 0.067). In the communities that had not been subjected to fire disturbance, increasing hierarchy distance of leaf dry matter content between the native species and the invader reduced the invasion intensity of A. adenophora (P < 0.05). In the post-fire communities, increasing hierarchy distance of plant height between the native species and the invader significantly decreased the invasion intensity of A. adenophora(P< 0.05).

Conclusion: Phylogenetic diversity consistently explains the resistance of native plant communities to the invasion by the exotic species A. adenophora under different disturbance regimes. Our results also suggest that native community traits that are indicators of resistance to the invasion of A. adenophora shift in response to fire disturbance.

Key words: invasion resistance, phylogenetic diversity, trait hierarchy, fire disturbance