Intensified Aridity Hinders Soil Microbes From Improving Their Nitrogen Use Efficiency
文献类型：期刊论文
| 作者 | Yang, Jingyi1; Wang, Zitong1; Liu, Ziping1,3; Chang, Qing1,3; Wang, Bo1; Zhang, Yangjian2; Bai, Edith1,3 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2025-08-25 |
| 卷号 | 31期号:8页码:e70453 |
| 关键词 | 18O isotope labeling aridity microbial necromass microbial nitrogen use efficiency nitrogen cycling nitrogen limitation Tibetan Plateau |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.70453 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Microbial nitrogen (N) use efficiency (NUE) is crucial for retaining N in soils and supplying N to plants. However, how soil microbial NUE in N-limited dryland responds to aridity remains poorly understood. Here we used O-18 and N-15 isotope labeling techniques to investigate the effects of climatic, edaphic, and biotic factors on microbial N metabolism along a 2200 km aridity gradient on the Tibetan Plateau. We found soil microbes could enhance their NUE to cope with N limitation, but this ability was hindered when aridity index (AI) < 0.12 (extremely dry conditions) where water limitation directly inhibited microbial growth. As water limitation weakened (AI > 0.12), microbes increased their NUE with decreasing aridity because they got more limited by N and temperature. The increase of microbial NUE increased microbial necromass N, contributing to the increase of soil total N. Our findings provide new insights into microbial N use strategies under water- and N-limited conditions and their vital role in N retention in ecosystems. This helps to deploy microbial potential in conserving N in soils for higher productivity and to better predict soil N processes under global changes. |
| URL标识 | 查看原文 |
| WOS关键词 | ECOLOGICAL STOICHIOMETRY ; ORGANIC-MATTER ; CARBON ; COMMUNITIES ; GROWTH ; RESPONSES ; ACQUISITION ; BACTERIA |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001559314600001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/216166]  |
| 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 | Zhang, Yangjian; Bai, Edith |
| 作者单位 | 1.Northeast Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Geog Proc & Ecol Secur Changbai Mt, Changchun, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 3.Northeast Normal Univ, Minist Educ, Key Lab Vegetat Ecol, Changchun, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yang, Jingyi,Wang, Zitong,Liu, Ziping,et al. Intensified Aridity Hinders Soil Microbes From Improving Their Nitrogen Use Efficiency[J]. GLOBAL CHANGE BIOLOGY,2025,31(8):e70453. |
| APA | Yang, Jingyi.,Wang, Zitong.,Liu, Ziping.,Chang, Qing.,Wang, Bo.,...&Bai, Edith.(2025).Intensified Aridity Hinders Soil Microbes From Improving Their Nitrogen Use Efficiency.GLOBAL CHANGE BIOLOGY,31(8),e70453. |
| MLA | Yang, Jingyi,et al."Intensified Aridity Hinders Soil Microbes From Improving Their Nitrogen Use Efficiency".GLOBAL CHANGE BIOLOGY 31.8(2025):e70453. |
入库方式： OAI收割
来源：地理科学与资源研究所
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