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Long-Term Grazing Intensity Impacts Belowground Carbon Allocation and Mycorrhizas Revealed by 13CO2 Pulse Labeling

文献类型：期刊论文

作者Faghihinia, Maede2; Zou, Yi; Bai, Yongfei3; Pourbakhtiar, Alireza4; Marrs, Rob2; Staddon, Philip L.
刊名RANGELAND ECOLOGY & MANAGEMENT
出版日期2023
卷号86页码:64-72
ISSN号1550-7424
关键词AM fungi Carbon flux Grassland Grazing density Respiration Stable isotope labeling
DOI10.1016/j.rama.2022.11.001
文献子类Article
英文摘要Despite the importance of grasslands for carbon storage and climate regulation, there is uncertainty about the effect of livestock grazing intensity on aboveground carbon assimilation and belowground carbon partitioning. Furthermore, the relationship between belowground carbon allocation and arbuscular mycorrhizal fungi, which serve as a conduit for carbon movement through the plant and soil, is unclear. To investigate this, we used an in situ C-13 stable isotope pulse-chase labeling approach in plots under seven rates of sheep grazing intensity in a steppe grassland in northern China. We quantified the allocation of carbon to plants, soil, and soil-respired CO2 along with measurements of mycorrhizal hyphal density in the soil. With increasing grazing intensity, carbon assimilation per unit shoot biomass increased significantly, whereas carbon allocation to roots marginally decreased. Soil-respired CO2 appeared to be independent of grazing intensity. Mycorrhizal hyphal density decreased with increasing grazing intensity and was correlated significantly with new carbon input to roots 2 d after labeling and marginally related to that of soil 1 d after the 13 C-CO2 pulse. Our study suggests that grazing intensity alters the distribution of carbon among different carbon pools within the plant-soil system. The results also underscored the key role of mycorrhizas as a fast route for carbon transfer from plant to soil. (c) 2022 The Society for Range Management. Published by Elsevier Inc. All rights reserved.
学科主题Ecology ; Environmental Sciences
电子版国际标准刊号1551-5028
出版地LAKEWOOD
WOS关键词INNER-MONGOLIA ; SOIL CARBON ; UPLAND GRASSLAND ; FUNGI ; NITROGEN ; STEPPE ; PLANT ; ROOT ; ECOSYSTEM ; HYPHAE
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
出版者SOC RANGE MANAGEMENT
WOS记录号WOS:000912490400008
资助机构[RDF-15-0213]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/29114]  
专题植被与环境变化国家重点实验室
作者单位1.Staddon, Philip L.] Univ Gloucestershire, Countryside & Community Res Inst, Cheltenham GL50 4AZ, Glos, England
2.[Faghihinia, Maede; Zou, Yi; Staddon, Philip L.] Xian Jiaotong Liverpool Univ, Dept Hlth & Environm Sci, Suzhou 215123, Jiangsu, Peoples R China
3.Univ Liverpool, Sch Environm Sci, Liverpool L69 3GP, Merseyside, England
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
5.Univ Liverpool, Sch Engn, Liverpool L69 3GP, Merseyside, England
推荐引用方式
GB/T 7714		 Faghihinia, Maede,Zou, Yi,Bai, Yongfei,et al. Long-Term Grazing Intensity Impacts Belowground Carbon Allocation and Mycorrhizas Revealed by 13CO2 Pulse Labeling[J]. RANGELAND ECOLOGY & MANAGEMENT,2023,86:64-72.
APA Faghihinia, Maede,Zou, Yi,Bai, Yongfei,Pourbakhtiar, Alireza,Marrs, Rob,&Staddon, Philip L..(2023).Long-Term Grazing Intensity Impacts Belowground Carbon Allocation and Mycorrhizas Revealed by 13CO2 Pulse Labeling.RANGELAND ECOLOGY & MANAGEMENT,86,64-72.
MLA Faghihinia, Maede,et al."Long-Term Grazing Intensity Impacts Belowground Carbon Allocation and Mycorrhizas Revealed by 13CO2 Pulse Labeling".RANGELAND ECOLOGY & MANAGEMENT 86(2023):64-72.

入库方式： OAI收割

来源：植物研究所

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