Research Progress on the Effects of Carbon Inputs and Nitrogen Addition on Arbuscular Mycorrhizal Fungi in Grassland Ecosystems

doi:10.11733/j.issn.1007-0435.2026.09.001

Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (9): 3141-3151.DOI: 10.11733/j.issn.1007-0435.2026.09.001

Research Progress on the Effects of Carbon Inputs and Nitrogen Addition on Arbuscular Mycorrhizal Fungi in Grassland Ecosystems

LIU Si-tong^1,2, GAO Ying-zhi²

1. Key Laboratory of Ministry of Education for Water Quality and Conservation of the Pearl River Delta, Institute of Environmental Research at Greater Bay Area, Guangzhou University,Guangzhou,Guangdong Province 510006, China;
2. College of Grassland Science, Xinjiang Agricultural University,Key Laboratory of Grassland Resources and Ecology of Western Arid Desert Area of the Ministry of Education, Urumqi, Xinjiang 830052, China

Received:2026-01-07 Revised:2026-05-22 Published:2026-09-11

碳输入与氮添加对草地生态系统丛枝菌根真菌影响的研究进展

刘思彤^1,2, 高英志²

1. 广州大学大湾区环境研究院, 珠江三角洲水质安全与保护教育部重点实验室, 广东广州 510006;
2. 新疆农业大学草业学院, 西部干旱荒漠区草地资源与生态教育部重点实验室, 新疆乌鲁木齐 830052

通讯作者: 高英志, E-mail: gaoyz108@nenu.edu.cn
作者简介:刘思彤(1996-),女,满族,吉林长春人,博士,主要从事草地生态学方向研究,E-mail:liust@gzhu.edu.cn
基金资助:
中央引导地方科技发展资金（ZYYD2025QY07）资助

Abstract

Abstract: Arbuscular mycorrhizal fungi （AMF） are key symbiotic microorganisms that support nutrient acquisition by grassland plants and contribute to soil structure maintenance. This review synthesizes current progress on how different forms of carbon input， nitrogen addition， and their interactions influence AMF in grassland ecosystems， focusing on colonization， hyphal growth， community composition， and symbiotic network structure. Elevated atmospheric CO₂ mainly promotes AMF hyphal growth and biomass accumulation by increasing belowground carbon allocation in plants. Biochar application and organic fertilizer addition improve soil physical properties and nutrient retention， thereby facilitating AMF colonization and community recovery. In contrast， the effects of soluble organic carbon inputs are moderated by plant functional group identity and nitrogen-phosphorus availability. Long?term or high?intensity nitrogen addition generally suppresses AMF， a response closely associated with soil acidification， reduced carbon allocation to mycorrhizae， and reorganization of AMF communities. The interactive effects of carbon inputs and nitrogen addition are constrained by carbon source characteristics， nitrogen legacy effects， and the availability of soil nutrients. Future research should increase the comparability of carbon input studies， clarify the combined regulatory roles of carbon source， nitrogen addition intensity and duration on AMF responses， and provide theoretical support for soil nutrient management and degraded grassland restoration.

Key words: Arbuscular mycorrhizal fungi, Grassland ecosystem, Carbon input, Nitrogen addition, Mycorrhizal symbiosis

摘要： 丛枝菌根真菌（AMF）是草地植物获取养分、维持土壤结构的关键共生微生物。本文从碳输入类型、氮添加及其交互作用的角度，总结了草地AMF在定殖、菌丝生长、群落组成和共生网络等方面的研究进展。大气CO₂富集主要通过增加植物地下碳分配促进AMF菌丝生长和生物量积累；生物炭和有机肥能改善土壤孔隙结构与养分保持条件，提升AMF定殖和群落恢复能力；可溶性碳输入的效果则受植物功能群及氮磷供给的共同调节。长期或高强度氮添加通常抑制AMF，这与土壤酸化、植物菌根碳投入减少及群落重组密切相关。碳氮交互作用受碳源类型、氮遗留效应和土壤有效养分供给制约。因此，未来需加强碳输入类型可比性研究，明确碳源、施氮强度与持续时间共同调控AMF响应的边界条件，为草地土壤养分调控和退化草地恢复提供科学参考。

关键词: 丛枝菌根真菌, 草地生态系统, 碳输入, 氮添加, 菌根共生

CLC Number:

Q938.1

LIU Si-tong, GAO Ying-zhi. Research Progress on the Effects of Carbon Inputs and Nitrogen Addition on Arbuscular Mycorrhizal Fungi in Grassland Ecosystems[J]. Acta Agrestia Sinica, 2026, 34(9): 3141-3151.

刘思彤, 高英志. 碳输入与氮添加对草地生态系统丛枝菌根真菌影响的研究进展[J]. 草地学报, 2026, 34(9): 3141-3151.

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Research Progress on the Effects of Carbon Inputs and Nitrogen Addition on Arbuscular Mycorrhizal Fungi in Grassland Ecosystems

碳输入与氮添加对草地生态系统丛枝菌根真菌影响的研究进展

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