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草业学报 ›› 2015, Vol. 24 ›› Issue (4): 191-200.DOI: 10.11686/cyxb20150422

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AM真菌在草地生态系统碳汇中的重要作用

张峰,南志标,闫飞扬,李芳,段廷玉*   

  1. 草地农业生态系统国家重点实验,兰州大学草地农业科技学院,甘肃 兰州 730020
  • 收稿日期:2013-09-11 修回日期:2013-12-09 出版日期:2015-04-20 发布日期:2015-04-20
  • 通讯作者: 段廷玉,E-mail:duanty@lzu.edu.cn
  • 作者简介:张峰(1987-),男,甘肃武威人,在读硕士。E-mail:zhangf12@lzu.edu.cn
  • 基金资助:
    国家自然科学基金青年项目(31100368),教育部博士点基金新青年教师项目(20110211120032)和甘肃省自然科学基金项目(1208RJZA270)资助。

The important role of arbuscular mycorrhizal fungi in carbon storage in grassland ecosystems

ZHANG Feng, NAN Zhi-Biao, YAN Fei-Yang, LI Fang, DUAN Ting-Yu*   

  1. State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
  • Received:2013-09-11 Revised:2013-12-09 Online:2015-04-20 Published:2015-04-20

摘要: 草地生态系统是陆地生态系统的重要组成部分,在全球碳储量中占有重要的地位,而广泛存在于草地生态系统中的丛枝菌根(arbuscular mycorrhizal,简称AM)真菌在草地生态系统的碳汇中起着重要的作用。本文从AM真菌功能多样性出发,从以下几个方面阐述AM真菌在草地生态系统碳汇中的作用:1)AM真菌对草地生态系统净初级生产力(NPP)的影响。2)AM真菌对土壤碳库变化的影响。3)AM真菌对CO2浓度升高和大气氮沉降增加的响应。4)草地放牧利用、管理措施等干扰影响AM真菌,从而对草地生态系统碳循环产生影响。综合分析了AM真菌在草地生态系统中的作用机制,旨在为准确全面地评估碳汇现状、测算固碳速率、预估碳储量和应对全球气候变化提供方法和参考依据。

Abstract: Grassland ecosystems occupy an important position in global carbon storage. Arbuscular mycorrhizal fungi (AMF) exist widely in these grasslands and play a significant role in the ecosystem’s ability to act as carbon sinks. This paper summarizes this role from the perspective of the fungi’s functional diversity. It reviews, 1) the impact of AMF on the net primary productivity of grassland ecosystems, 2) their impact on variation in the soil carbon pool, 3) the response of AMF to elevated atmospheric CO2 and increased anthropogenic nitrogen deposition, and 4) how grazing management practices could affect AMF and therefore the carbon cycle of grassland systems. This review is undertaken in order to provide references for evaluating carbon sinks, calculating carbon fixation rates, predicting carbon storage and coping with global climate change.