Effects of grazing intensity on photosynthetic carbon allocation and transport in the typical grassland of Inner Mongolia
文献类型：期刊论文
| 作者 | Wang, Yuxi2; Wang, Chunmei2; Song, Minghua1; Wang, Guiqiang3; Dou, Xiaomin2; Ma, Ziyi2; Wang, Tianyu2; Han, Mai2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2026-01-19 |
| 卷号 | N/A |
| 关键词 | Grazing intensity (CO2)-C-13 pulse labeling Photosynthetically fixed carbon Soil organic carbon Carbon dynamics |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-026-08288-y |
| 产权排序 | 2 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Aims We aimed to explore that how grazing pressures impact photosynthetic carbon allocation between above- and below-ground and carbon flux in grasslands. Methods An in situ C-13 labeling experiment was carried out in a temperate grassland with four grazing intensities: no grazing, light grazing, moderate grazing and heavy grazing. Results Our results revealed that the grazing exclusion treatment exhibited higher carbon stocks in plants, roots, and soil than the other grazing intensities. Plants remained higher proportion of photosynthetic carbon to shoots in the control (29.51%) than in the other grazing treatments (light: 26.35%; moderate: 25.58%; heavy: 23.50%) after 30 days of the C-13 labeling. The percentage of C-13 allocated to roots was higher in heavy grazing (19.14%) than in un-grazing (14.80%), light (15.49%), and moderate grazing (17.61%) treatments. In contrast, C-13 recovery in soil was higher in moderate grazing (40.93%) than in heavy (35.25%), light (33.42%), and no-grazing (31.68%) treatments. The (CO2)-C-13 released by roots and soil microbial respiration was greater (16.52%) in no-grazing than in other grazing treatments. Conclusion In summary, moderate and heavy grazing promoted the allocation of photosynthetic carbon to belowground parts and reduced carbon dioxide emissions. However, heavy grazing still leads to a decline in soil organic carbon compared to grazing exclusion. As a survival strategy against grazing, this shift reduces short-term CO2 loss but may not enhance long-term storage under heavy grazing. Our findings highlight that understanding long-term grazing effects is crucial for evaluating grassland carbon sequestration and developing adaptive management strategies. |
| URL标识 | 查看原文 |
| WOS关键词 | SOIL RESPIRATION ; DECOMPOSITION ; ECOSYSTEMS ; BIOMASS ; PATTERN ; FLUXES |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001664836800001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219716]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Wang, Chunmei; Song, Minghua |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, A11 Datun Rd, Beijing 100101, Peoples R China; 2.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China; 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Area Qinghai Prov, Xining 810008, Qinghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yuxi,Wang, Chunmei,Song, Minghua,et al. Effects of grazing intensity on photosynthetic carbon allocation and transport in the typical grassland of Inner Mongolia[J]. PLANT AND SOIL,2026,N/A. |
| APA | Wang, Yuxi.,Wang, Chunmei.,Song, Minghua.,Wang, Guiqiang.,Dou, Xiaomin.,...&Han, Mai.(2026).Effects of grazing intensity on photosynthetic carbon allocation and transport in the typical grassland of Inner Mongolia.PLANT AND SOIL,N/A. |
| MLA | Wang, Yuxi,et al."Effects of grazing intensity on photosynthetic carbon allocation and transport in the typical grassland of Inner Mongolia".PLANT AND SOIL N/A(2026). |
入库方式： OAI收割
来源：地理科学与资源研究所
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