Elevation modulates microbial carbon use efficiency responses to field and laboratory warming in alpine soils of the Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Wang, Yike2; Zhang, Jiang2; Chen, Jiameng1,2; Wu, Jiapei2; Huang, Yuanyuan2 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2026-07-01 |
| 卷号 | 218页码:110160 |
| 关键词 | Elevation gradient Carbon use efficiency (CUE) Temperature sensitivity (Q 10 ) Mass specific processes Microbial turnover time |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2026.110160 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Soil microbial carbon use efficiency (CUE) regulates the balance between respiration and growth and is sensitive to both temperature and soil physicochemical constraints. However, it remains unclear how soil physicochemical properties interact with field and laboratory warming to regulate microbial carbon allocation. We combined a natural elevation gradient (3200-4000 m), a decade long open top chamber (OTC) experiment (field warming), and a laboratory warming experiment (9.4 degrees C vs. 19.4 degrees C) to examine microbial respiration, growth, and CUE in alpine meadow soils of the Qinghai-Tibetan Plateau. Elevation strongly shaped soil biochemical pools and physical structure, with CUE peaking at 4000 m (41.83 +/- 2.41%) under ambient condition. Field warming effects varied among elevations: CUE decreased by 60.08% at 4000 m but increased by 56.37% at 3200 m and 49.89% at 3700 m. Laboratory warming stimulated respiration and reduced growth across elevations, whereas at 4000 m both respiration and growth increased, but respiration increased to a greater extent. The turnover time ranged from 3.02 to 10.73 days, with significant main effects of elevation and laboratory warming and a strong elevation & times; field warming interaction (p < 0.01). Temperature sensitivity varied strongly across elevations and warming treatments, with growth sensitivity (Q(10)_G) exhibiting more than a seven folds variation (0.23-1.62) and a significant elevation & times; field warming interaction (p < 0.001). Multiple regression identified significant interactions between field warming and soil structure (soil texture and aggregate distribution), showing that warming induced increases in CUE were enhanced in soils with higher silt/clay content. Structural equation modeling further revealed that soil physical structure indirectly regulated CUE by altering biochemical resource pools and microbial biomass, whereas phosphorus availability amplified Q(10) across processes. Incorporating such environmentally regulated microbial traits into Earth system models will improve predictions of soil carbon persistence and feedbacks to global warming. |
| URL标识 | 查看原文 |
| WOS关键词 | TEMPERATURE SENSITIVITY ; EXTRACTION METHOD ; RESPIRATION ; DIVERSITY |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001735198900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221515]  |
| 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 | Huang, Yuanyuan |
| 作者单位 | 1.China Univ Min & Technol Beijing, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Yike,Zhang, Jiang,Chen, Jiameng,et al. Elevation modulates microbial carbon use efficiency responses to field and laboratory warming in alpine soils of the Qinghai-Tibetan Plateau[J]. SOIL BIOLOGY & BIOCHEMISTRY,2026,218:110160. |
| APA | Wang, Yike,Zhang, Jiang,Chen, Jiameng,Wu, Jiapei,&Huang, Yuanyuan.(2026).Elevation modulates microbial carbon use efficiency responses to field and laboratory warming in alpine soils of the Qinghai-Tibetan Plateau.SOIL BIOLOGY & BIOCHEMISTRY,218,110160. |
| MLA | Wang, Yike,et al."Elevation modulates microbial carbon use efficiency responses to field and laboratory warming in alpine soils of the Qinghai-Tibetan Plateau".SOIL BIOLOGY & BIOCHEMISTRY 218(2026):110160. |
入库方式： OAI收割
来源：地理科学与资源研究所
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