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Long-Term Grazing Intensity Impacts Belowground Carbon Allocation and Mycorrhizas Revealed by 13CO2 Pulse Labeling | |
Faghihinia, Maede1; Zou, Yi; Bai, Yongfei2; Pourbakhtiar, Alireza3; Marrs, Rob1; Staddon, Philip L. | |
2023 | |
发表期刊 | RANGELAND ECOLOGY & MANAGEMENT |
ISSN | 1550-7424 |
卷号 | 86页码:64-72 |
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. |
关键词 | AM fungi Carbon flux Grassland Grazing density Respiration Stable isotope labeling |
学科领域 | Ecology ; Environmental Sciences |
DOI | 10.1016/j.rama.2022.11.001 |
收录类别 | SCI |
语种 | 英语 |
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) |
WOS记录号 | WOS:000912490400008 |
出版者 | SOC RANGE MANAGEMENT |
文献子类 | Article |
出版地 | LAKEWOOD |
EISSN | 1551-5028 |
资助机构 | [RDF-15-0213] |
作者邮箱 | yi.zou@xjtlu.edu.cn |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | 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.[Faghihinia, Maede; Zou, Yi; Staddon, Philip L.] Xian Jiaotong Liverpool Univ, Dept Hlth & Environm Sci, Suzhou 215123, Jiangsu, Peoples R China 2.Univ Liverpool, Sch Environm Sci, Liverpool L69 3GP, Merseyside, England 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Univ Liverpool, Sch Engn, Liverpool L69 3GP, Merseyside, England 5.Staddon, Philip L.] Univ Gloucestershire, Countryside & Community Res Inst, Cheltenham GL50 4AZ, Glos, 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. |
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