Exploring grazing intensity effects: nitrogen uptake in grassland species and soil carbon allocation
文献类型：期刊论文
| 作者 | Zhou, Jing6,7; Ding, Yong5; Tian, Yuqiang3,4; Xu, Xingliang6,7; Gunina, Anna1,2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2024-05-10 |
| 卷号 | N/A |
| 关键词 | Grazing C-13 allocation N uptake Grassland |
| DOI | 10.1007/s11104-024-06662-2 |
| 产权排序 | 1 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Background and aims Grazing drives carbon (C) and nitrogen (N) dynamics of grasslands through livestock trampling, defoliation, and excretion. Still, the responses of N uptake by plant species and simultaneous C allocation into the soil to grazing intensity remain unclear. Methods In-situ (NH4+)-N- 15 / (NO3-)-N-15 and C-13-CO2 labeling experiment was conducted in Inner Mongolia grasslands under 5 years of grazing with no, light (4 sheep 1.33 ha(-1)) and heavy (12 sheep 1.33 ha(-1)) intensity to reveal the contribution of plant-derived C into the soil and the fate of N on day one and three after C-13-labeling. Experiment had a completely randomized design (n = 3), and every plot included Leymus chinensis, Carex korshinskyi, Cleistogenes squarrosa, and Stipa grandis. Results Grazing increased plants' total N uptake compared to control (no grazing); higher NO3- uptake was found compared to NH4+ (aboveground: 0.40-20.78 vs. 0.32-6.58 mu g N m(-2); belowground: 0.04-9.92 vs. 0.01-0.49 mu g N m(-2)), irrespective of grazing intensity. C. korshinskyi showed the highest N uptake (3-21 mu g N m(-2)) under the three grazing intensities. C-13-CO2 assimilation was the lowest under heavy grazing (aboveground: 1.06-10.67 mg C m(-2); belowground: 0.25-1.53 mg C m(-2)) regardless of plant species. C-13-CO2 assimilation by L. chinensis and C. squarrosa decreased 3-5 times with grazing intensity. Grazing increased C-13-SOC irrespective to soil depth compared to no grazing. Conclusions Grazing patterns affected the plants' total assimilation C capacity and N uptake and the response varies among plant species, as well as the allocation of plant-C transfer into the soil. |
| WOS关键词 | NET N MINERALIZATION ; ORGANIC-CARBON ; INNER-MONGOLIA ; TEMPERATE GRASSLAND ; CLIMATE-CHANGE ; SEQUESTRATION ; DEGRADATION ; STORAGE ; ECOSYSTEMS ; INSIGHTS |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS记录号 | WOS:001220988900002 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/205369]  |
| 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 | Xu, Xingliang |
| 作者单位 | 1.RUDN Univ, Moscow 117198, Russia 2.Univ Kassel, Dept Environm Chem, D-37213 Witzenhausen, Germany 3.Beijing Normal Univ, Fac Geog Sci, Sch Nat Resources, Beijing 100875, Peoples R China 4.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 5.Chinese Acad Agr Sci, Inst Grassland Res, Hohhot 010010, Peoples R China 6.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China 7.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Jing,Ding, Yong,Tian, Yuqiang,et al. Exploring grazing intensity effects: nitrogen uptake in grassland species and soil carbon allocation[J]. PLANT AND SOIL,2024,N/A. |
| APA | Zhou, Jing,Ding, Yong,Tian, Yuqiang,Xu, Xingliang,&Gunina, Anna.(2024).Exploring grazing intensity effects: nitrogen uptake in grassland species and soil carbon allocation.PLANT AND SOIL,N/A. |
| MLA | Zhou, Jing,et al."Exploring grazing intensity effects: nitrogen uptake in grassland species and soil carbon allocation".PLANT AND SOIL N/A(2024). |
入库方式： OAI收割
来源：地理科学与资源研究所
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