Excessive climate warming exacerbates nitrogen limitation on microbial metabolism in an alpine meadow of the Tibetan Plateau: Evidence from soil ecoenzymatic stoichiometry
文献类型：期刊论文
| 作者 | Cai, Mengke2; Zhang, Yangjian1,2; Zhao, Guang2; Zhao, Bo2; Cong, Nan2; Zhu, Juntao2; Zheng, Zhoutao2; Wu, Wenjuan2; Duan, Xiaoqing2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-06-20 |
| 卷号 | 930页码:172731 |
| 关键词 | Microbial metabolism Ecoenzymatic stoichiometry High level warming Enzyme vector model Tibetan plateau |
| DOI | 10.1016/j.scitotenv.2024.172731 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Soil ecoenzymatic stoichiometry reflects the dynamic equilibrium between microorganism's nutrient requirements and resource availability. However, uncertainties persist regarding the key determinants of nutrient restriction in relation to microbial metabolism under varying degrees of warming. Our long-term and multi-level warming field experiment (control treatment, +0.42 degrees C, +1.50 degrees C, +2.55 degrees C) in a typical alpine meadow unveiled a decline in carbon (C)- and nitrogen (N)-acquired enzymes with escalating warming magnitudes, while phosphorus (P)-acquired enzymes displayed an opposite trend. Employing enzymatic stoichiometry modeling, we assessed the nutrient limitations of microbial metabolic activity and found that C and N co-limited microbial metabolic activities in the alpine meadow. Remarkably, high-level warming (+2.55 degrees C) exacerbated microbe N limitation, but alleviate C limitations. The structural equation modeling further indicated that alterations in soil extracellular enzyme characteristics (SES) were more effectively elucidated by microbial characteristics (microbial biomass C, N, P, and their ratios) rather than by soil nutrients (total nutrient contents and their ratios). However, the microbial control over SES diminished with higher levels of warming magnitude. Overall, our results provided novel evidence that the factors driving microbe metabolic limitation may vary with the degree of warming in Tibet alpine grasslands. Changes in nutrient demand for microorganism ' s metabolism in response to warming should be considered to improve nutrient management in adapting to different future warming scenarios. |
| WOS关键词 | EXTRACELLULAR ENZYME-ACTIVITIES ; NUTRIENT ACQUISITION ; ORGANIC-CARBON ; USE EFFICIENCY ; RESPONSES ; FOREST ; GRASSLANDS ; RESPIRATION ; COMMUNITIES ; ECOSYSTEMS |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS记录号 | WOS:001237450600001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/205306]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 通讯作者 | Zhang, Yangjian; Zhu, Juntao |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Lhasa Plateau Ecosyst Res Stn, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Mengke,Zhang, Yangjian,Zhao, Guang,et al. Excessive climate warming exacerbates nitrogen limitation on microbial metabolism in an alpine meadow of the Tibetan Plateau: Evidence from soil ecoenzymatic stoichiometry[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,930:172731. |
| APA | Cai, Mengke.,Zhang, Yangjian.,Zhao, Guang.,Zhao, Bo.,Cong, Nan.,...&Duan, Xiaoqing.(2024).Excessive climate warming exacerbates nitrogen limitation on microbial metabolism in an alpine meadow of the Tibetan Plateau: Evidence from soil ecoenzymatic stoichiometry.SCIENCE OF THE TOTAL ENVIRONMENT,930,172731. |
| MLA | Cai, Mengke,et al."Excessive climate warming exacerbates nitrogen limitation on microbial metabolism in an alpine meadow of the Tibetan Plateau: Evidence from soil ecoenzymatic stoichiometry".SCIENCE OF THE TOTAL ENVIRONMENT 930(2024):172731. |
入库方式： OAI收割
来源：地理科学与资源研究所
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