Experimental warming shifts coupling of carbon and nitrogen cycles in an alpine meadow
文献类型：期刊论文
| 作者 | Wang, Song2,3; Quan, Quan2,3; Meng, Cheng2; Chen, Weinan2,3; Luo, Yiqi1; Niu, Shuli2,3 |
| 刊名 | JOURNAL OF PLANT ECOLOGY
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 14期号:3页码:541-554 |
| 关键词 | Bayesian probabilistic inversion Markov-Chain Monte-Carlo (MCMC) warming carbon and nitrogen cycles stoichiometry alpine meadow |
| ISSN号 | 1752-9921 |
| DOI | 10.1093/jpe/rtab008 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Aims Terrestrial ecosystem carbon (C) uptake is remarkably regulated by nitrogen (N) availability in the soil. However, the coupling of C and N cycles, as reflected by C:N ratios in different components, has not been well explored in response to climate change. Methods Here, we applied a data assimilation approach to assimilate 14 datasets collected from a warming experiment in an alpine meadow in China into a grassland ecosystem model. We attempted to evaluate how experimental warming affects C and N coupling as indicated by constrained parameters under ambient and warming treatments separately. Important Findings The results showed that warming increased soil N availability with decreased C:N ratio in soil labile C pool, leading to an increase in N uptake by plants. Nonetheless, C input to leaf increased more than N, leading to an increase and a decrease in the C:N ratio in leaf and root, respectively. Litter C:N ratio was decreased due to the increased N immobilization under high soil N availability or warming-accelerated decomposition of litter mass. Warming also increased C:N ratio of slow soil organic matter pool, suggesting a greater soil C sequestration potential. As most models usually use a fixed C:N ratio across different environments, the divergent shifts of C:N ratios under climate warming detected in this study could provide a useful benchmark for model parameterization and benefit models to predict C-N coupled responses to future climate change. |
| WOS关键词 | QINGHAI-TIBET PLATEAU ; PARAMETER-ESTIMATION ; MICROBIAL BIOMASS ; DATA ASSIMILATION ; USE EFFICIENCY ; CLIMATE ; RESPONSES ; ECOSYSTEM ; FOREST ; FEEDBACKS |
| 资助项目 | National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23080302] ; International Collaboration Project of Chinese Academy of Sciences[131A11KYSB20180010] |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000648966700015 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Collaboration Project of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/163949]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA 2.Chinese Acad Sci, Inst Geog Sci & Nat Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Song,Quan, Quan,Meng, Cheng,et al. Experimental warming shifts coupling of carbon and nitrogen cycles in an alpine meadow[J]. JOURNAL OF PLANT ECOLOGY,2021,14(3):541-554. |
| APA | Wang, Song,Quan, Quan,Meng, Cheng,Chen, Weinan,Luo, Yiqi,&Niu, Shuli.(2021).Experimental warming shifts coupling of carbon and nitrogen cycles in an alpine meadow.JOURNAL OF PLANT ECOLOGY,14(3),541-554. |
| MLA | Wang, Song,et al."Experimental warming shifts coupling of carbon and nitrogen cycles in an alpine meadow".JOURNAL OF PLANT ECOLOGY 14.3(2021):541-554. |
入库方式： OAI收割
来源：地理科学与资源研究所
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