Soil Carbon Availability Drives Depth-Dependent Responses of Microbial Nitrogen Use Efficiency to Warming
文献类型：期刊论文
| 作者 | Zhang, Qiufang; Qin, Wenkuan; Li, Xiaojie; Feng, Jiguang; Chen, Yuehmin; Zhang, Zhenhua; He, Jin Sheng; Richter, Andreas; Schimel, Joshua P.; Zhu, Biao |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2025 |
| 卷号 | 31期号:9 |
| 关键词 | gross nitrogen mineralization increase temperature isotope labelling soil carbon composition soil depth |
| 英文摘要 | Microbial nitrogen use efficiency (NUE) describes the partitioning of organic N between microbial growth and N mineralization, which is crucial for assessing soil N retention. However, how warming affects NUE along soil depth remains unclear. Based on a whole-soil-profile warming experiment (0 to 100 cm, +4 degrees C) on the Qinghai-Tibetan Plateau, combined with 18O and 15N isotope labeling techniques, we determined soil carbon (C) composition, edaphic properties, and microbial parameters. The results showed that NUE declined with soil depth in both control and warming treatments, driven by microbial C limitation. The response of NUE to warming varied with soil depth. Warming reduced topsoil (0-30 cm) microbial N growth, ultimately leading to a decrease in NUE, but had no effect in deep soils (30-100 cm). Jointly, these findings highlight that warming may exacerbate soil N loss in topsoil, and that maintaining microbial C and N availability could be a key strategy for preserving microbial N sequestration under warming conditions. |
| 源URL | [http://210.75.249.4/handle/363003/62372]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Zhang, Qiufang,Qin, Wenkuan,Li, Xiaojie,et al. Soil Carbon Availability Drives Depth-Dependent Responses of Microbial Nitrogen Use Efficiency to Warming[J]. GLOBAL CHANGE BIOLOGY,2025,31(9). |
| APA | Zhang, Qiufang.,Qin, Wenkuan.,Li, Xiaojie.,Feng, Jiguang.,Chen, Yuehmin.,...&Zhu, Biao.(2025).Soil Carbon Availability Drives Depth-Dependent Responses of Microbial Nitrogen Use Efficiency to Warming.GLOBAL CHANGE BIOLOGY,31(9). |
| MLA | Zhang, Qiufang,et al."Soil Carbon Availability Drives Depth-Dependent Responses of Microbial Nitrogen Use Efficiency to Warming".GLOBAL CHANGE BIOLOGY 31.9(2025). |
入库方式： OAI收割
来源：西北高原生物研究所
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