Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (8): 3091-3102.DOI: 10.11733/j.issn.1007-0435.2026.08.031

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Relative Contributions and Influencing Factors of Ectomycorrhizal Respiration and Arbuscular Mycorrhizal Respiration to Soil Respiration in Forest and Grassland Ecosystems-Based on Data Integration Analysis

LIU Si-bo1, ZHENG Xiang1, HE Ying-ying1, HU Juan1, HU Dong-yue1, JIANG Jiang2, QIU Kai-yang1, HAI Xu-ying1, XUE Bin1   

  1. 1. College of Forestry and Prataculture, State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan 750021, Ningxia, China;
    2. Co-Innovation Center of Sustainable Forestry in Southern China, Key Laboratory of Soil and Water Conservation and Ecological Restoration in Jiangsu Province, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, China
  • Received:2025-09-25 Revised:2026-01-30 Published:2026-08-04

森林与草地生态系统外生菌根呼吸与丛枝菌根呼吸对土壤呼吸的相对贡献及影响因子—基于数据整合分析

柳思博1, 郑翔1, 何莹莹1, 虎娟1, 胡东月1, 姜姜2, 邱开阳1, 海旭莹1, 薛斌1   

  1. 1. 宁夏大学林业与草业学院, 林木资源高效生产全国重点实验室, 宁夏 银川 750021;
    2. 南方现代林业协同创新中心, 南京林业大学江苏省水土保持与生态修复重点实验室, 江苏 南京 210037
  • 通讯作者: 郑翔,E-mail:xiangzheng@nxu.edu.cn
  • 作者简介:柳思博(1998-),女,汉族,宁夏银川人,硕士研究生,主要从事森林生态方向研究,E-mail:15809516935@163.com
  • 基金资助:
    宁夏重点研发项目引才专项(2024BEH04098);国家自然科学基金项目(42407340)资助

Abstract: Mycorrhizal respiration (RMyc) significantly affects the carbon cycling in terrestrial ecosystems, yet its contribution potential and main influencing factors remain unclear. In this study, a meta-analysis was conducted by using 105 datasets from 41 publications. By employing a mesh exclusion method to distinguish soil respiration components, we quantified the average contribution of RMyc to soil autotrophic respiration (RAuto) and total soil respiration (RT), and compared the differences between arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) contributions. The results showed that the average contribution rates of RMyc to RAuto and RT were 38.55% and 16.87%, respectively. Specifically, the average contributions of AM and ECM to RT were 16.78% (ranging from 2.48% to 32.00%) and 16.73% (ranging from 3.00% to 54.47%), respectively. Correlation analysis indicated that the RMyc rate was significantly negatively correlated with absolute longitude, mean annual precipitation, soil total nitrogen, and soil total phosphorus, while it was significantly positively correlated with soil pH and fine root biomass. Over all, RMyc is an important component of soil respiration, and is affected by environmental factors, soil nutrient supply, and symbiotic relationships. This study revealed the contribution of mycorrhizal respiration to soil carbon fluxes at a global scale, providing a scientific basis for improving soil carbon cycle models.

Key words: Soil Respiration, Mycorrhiza Respiration, Grid Exclusion Method, Soil Properties, Ecosystem

摘要: 菌根呼吸(Mycorrhizal respiration,RMyc)是土壤呼吸的重要组成部分,显著影响陆地生态系统碳循环过程。然而,不同生态系统中RMyc的贡献潜力及主要影响因子尚不明确。本文整合分析了41篇文献中的105组数据,采用网格排除法区分土壤呼吸组分,量化了RMyc对土壤自养呼吸(RAuto)、土壤总呼吸(RT)的平均贡献,并比较丛枝菌根(Arbuscular Mycorrhizal,AM)呼吸和外生菌根(Ectomycorrhizal,ECM)呼吸贡献的差异及其影响因子。。研究发现:RMycRAuto、RT的平均贡献率分别为38.55%和16.87%。其中AM、ECM的平均贡献分别为16.78%(2.48%~32.00%)和16.73%(3.00%~54.47%)。RMyc速率与绝对经度、年降雨量、土壤总氮、土壤总磷显著负相关,与土壤pH值、细根生物量显著正相关。总体而言,RMycRAutoRT的重要组成部分,受环境因子、土壤养分供给、共生关系的影响。本研究从全球尺度表明菌根呼吸对土壤碳通量的贡献,为完善土壤碳循环提供科学依据。

关键词: 土壤呼吸, 菌根呼吸, 网格排除法, 土壤性质, 生态系统

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