Mycorrhiza increases plant diversity and soil carbon storage in grasslands

• 成果类型: Article
• 署名作者: Zhang, Entao; Wang, Yang; Crowther, Thomas W.; Sun, Weicheng; Chen, Shiping; Zhou, Daowei; Shangguan, Zhouping; Huang, Jianhui; He, Jin - Sheng; Wang, Yanfen; Sheng, Jiandong; Tang, Lisong; Li, Xinrong; Dong, Ming; Wu, Yan; Hu, Shuijin; Bai, Yongfei; Yu, Guirui
• 署名单位: Chinese Academy of Sciences; Institute of Botany, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Swiss Federal Institutes of Technology Domain; ETH Zurich; Chinese Academy of Sciences; Northeast Institute of Geography & Agroecology, CAS; Northwest A&F University - China; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Lanzhou University; Lanzhou University; Peking University; Xinjiang Agricultural University; Chinese Academy of Sciences; Xinjiang Institute of Ecology & Geography, CAS; Chinese Academy of Sciences; Hangzhou Normal University; Chinese Academy of Sciences; Chengdu Institute of Biology, CAS; North Carolina State University; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-12956
• DOI: 10.1073/pnas.2412556122
• 发表日期: 2025-02-18
• 关键词: arbuscular mycorrhizal; sequestration; nutrition; traits; determines; gradient; GROWTH; roles

摘要

Experimental studies have shown that symbiotic relationships between arbuscular mycorrhizal (AM) fungi and host plants can regulate soil organic carbon (SOC) storage. Although the impacts of mycorrhiza are highly context- dependent, it remains unclear how these effects vary across broad spatial scales. Based on data from 2296 field sites across grassland ecosystems of China, here we show that mycorrhizal fungi symbiosis enhances SOC storage in the topsoil and subsoil through increasing plant diversity and elevating biomass allocation to belowground. SOC storage is significantly higher in both the topsoil and subsoil in systems dominated by obligate mycorrhizal (OM) and facultative mycorrhizal (FM) plants than those dominated by nonmycorrhizal (NM) plants. Also, the relative abundance of OM plants increases at the expense of FM plants as temperature and precipitation increase. These findings provide valuable insights into the potential mechanisms by which mycorrhizal fungi may influence grassland plant diversity and SOC storage in the context of global change.