植物生态学报 ›› 2026, Vol. 50 ›› Issue (3): 625-638.DOI: 10.17521/cjpe.2025.0342  cstr: 32100.14.cjpe.2025.0342

• 研究论文 • 上一篇    下一篇

黄河源园区高寒湿地菌根真菌群落特征及其影响因素

周春菡1,*, 熊智诚1,*, 杨明新2, 史海兰1, 周亚星1, 唐玉1, 张静1, 纪宝明1, 代心灵1,**()   

  1. 1 北京林业大学草业与草原学院, 北京 100083
    2 中国地质调查局西宁自然资源综合调查中心, 西宁 810000
  • 收稿日期:2025-09-16 接受日期:2026-02-25 出版日期:2026-03-20 发布日期:2026-05-18
  • 通讯作者: **代心灵(daixinling_1995@bjfu.edu.cn)
  • 作者简介:

    *同等贡献

  • 基金资助:
    第二次青藏高原综合科学考察研究项目(2019QZKK0304);中国地质调查项目(DD20242555)

Community characteristics and drivers of arbuscular mycorrhizal fungi in alpine wetlands of the Yellow River Source Region

ZHOU Chun-Han1,*, XIONG Zhi-Cheng1,*, YANG Ming-Xin2, SHI Hai-Lan1, ZHOU Ya-Xing1, TANG Yu1, ZHANG Jing1, JI Bao-Ming1, DAI Xin-Ling1,**()   

  1. 1 School of Grassland Science, Beijing Forestry University, Beijing 100083, China
    2 Xining Natural Resources Comprehensive Survey Center of the China Geological Survey, Xining 810000, China
  • Received:2025-09-16 Accepted:2026-02-25 Online:2026-03-20 Published:2026-05-18
  • Contact: **DAI Xin-Ling(daixinling_1995@bjfu.edu.cn)
  • About author:

    *Contributed equally to this work

  • Supported by:
    The Second Tibetan Plateau Scientific Expedition and Research (STEP) Program(2019QZKK0304);China Geological Survey Project(DD20242555)

摘要:

探究三江源国家公园黄河源园区高寒湿地丛枝菌根真菌(AMF)群落结构变化及其驱动因素, 可为该区域生态系统的保护和可持续管理提供科学依据。该研究以黄河源园区内的高寒河流湿地和高寒沼泽湿地为研究对象, 采用野外调查取样、室内样品分析和高通量测序相结合的方法, 系统探究了不同湿地类型及优势植物种间AMF群落结构的变化及影响群落变化的关键因子。结果表明, 沼泽湿地的植被盖度显著低于河流湿地, 土壤电导率、全碳和全氮含量显著高于河流湿地。该研究共鉴定出2 799个球囊菌门的扩增子序列变体, 隶属于9科10属, 其中近明球囊霉属(Claroideoglomus)和球囊霉属(Glomus)为主要优势类群。沼泽湿地与河流湿地的AMF群落α多样性无显著差异, 但β多样性存在显著差异。方差分解分析表明, 湿地类型与非生物因子的总解释力为4.67% (非生物因子独立解释3.39%,高于湿地类型独立解释的1.04%), 而植物物种与非生物因子共同解释了AMF群落结构变异的5.00% (非生物因子独立解释2.04%,略高于植物物种的1.38%)。曼特尔检验与典型对应分析进一步表明, 植物丰富度、土壤含水量、养分含量及海拔是驱动AMF群落结构的关键因子。综上, 高寒湿地AMF群落结构主要受非生物因子驱动, 同时受生物因子协同影响。

关键词: 高寒湿地, 丛枝菌根真菌, 群落多样性, 影响因素

Abstract:

Aims Investigating the variation in arbuscular mycorrhizal fungal (AMF) community structure and its driving factors in the alpine wetlands of the Yellow River Source Region within Sanjiangyuan National Park can provide a scientific basis for ecosystem conservation and sustainable management in this area.

Methods Alpine riverine wetlands and alpine swamp wetlands in the Yellow River Source Region were selected as the study objects. An integrated approach combining field investigation and sampling, laboratory analyses, and high-throughput sequencing was employed to systematically examine AMF community structure across wetland types and dominant plant species, and to identify the key factors driving community variation.

Important findings Vegetation cover was significantly lower in swamp wetlands than in riverine wetlands, whereas soil electrical conductivity, total carbon, and total nitrogen contents were significantly higher. In total, 2 799 amplicon sequence variants (ASVs) belonging to the phylum Glomeromycota were identified and classified into 9 families and 10 genera, with Claroideoglomus and Glomus being the main predominant taxa. AMF α-diversity did not differ significantly between wetland types, whereas β-diversity showed significant differences. Variance partitioning analysis (VPA) indicated that wetland type and abiotic factors jointly explained 4.67% of community variation, with abiotic factors alone accounting for 3.39%, which was higher than the independent effect of wetland type (1.04%). Likewise, plant species and abiotic factors together explained 5.00% of AMF community variation, with the independent contribution of abiotic factors (2.04%) being slightly higher than that of plant species (1.38%). Mantel tests and canonical correspondence analysis (CCA) further demonstrated that plant richness, soil moisture, soil nutrient contents, and elevation were the key drivers of AMF community structure. In summary, AMF community structure in the alpine wetlands of the Yellow River Source Region is primarily driven by abiotic factors, while also being synergistically influenced by biotic components. These findings provide important scientific support for the development of targeted wetland ecological management strategies.

Key words: alpine wetland, arbuscular mycorrhizal fungi, community diversity, driving factor