Whole-soil-profile warming does not change microbial carbon use efficiency in surface and deep soils
文献类型：期刊论文
| 作者 | Zhang, Qiufang; Qin, Wenkuan; Feng, Jiguang; Li, Xiaojie; Zhang, Zhenhua ; He, Jin-Sheng; Schimel, Joshua P.; Zhu, Biao
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| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
 |
| 出版日期 | 2023 |
| 卷号 | 120期号:32 |
| 英文摘要 | The paucity of investigations of carbon (C) dynamics through the soil profile with warming makes it challenging to evaluate the terrestrial C feedback to climate change. Soil microbes are important engines driving terrestrial biogeochemical cycles; their carbon use efficiency (CUE), defined as the proportion of metabolized organic C allocated to microbial biomass, is a key regulator controlling the fate of soil C. It has been theorized that microbial CUE should decline with warming; however, empirical evidence for this response is scarce, and data from deeper soils are particularly scarce. Here, based on soil samples from a whole-soil-profile warming experiment (0 to 1 m, +4 degrees C) and O-18 tracing approach, we examined the vertical variation of microbial CUE and its response to similar to 3.3-y experimental warming in an alpine grassland on the Qinghai-Tibetan Plateau. Microbial CUE decreased with soil depth, a trend that was primarily controlled by soil C availability. However, warming had limited effects on microbial CUE regardless of soil depth. Similarly, warming had no significant effect on soil C availability, as char-acterized by extractable organic C, enzyme -based lignocellulose index, and lignin phenol-based ratios of vanillyls, syringyls, and cinnamyls. Collectively, our work suggests that short -term warming does not alter microbial CUE in either surface or deep soils, and emphasizes the regulatory role of soil C availability on microbial CUE. |
| 源URL | [http://210.75.249.4/handle/363003/61594]  |
| 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,Feng, Jiguang,et al. Whole-soil-profile warming does not change microbial carbon use efficiency in surface and deep soils[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2023,120(32). |
| APA | Zhang, Qiufang.,Qin, Wenkuan.,Feng, Jiguang.,Li, Xiaojie.,Zhang, Zhenhua.,...&Zhu, Biao.(2023).Whole-soil-profile warming does not change microbial carbon use efficiency in surface and deep soils.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,120(32). |
| MLA | Zhang, Qiufang,et al."Whole-soil-profile warming does not change microbial carbon use efficiency in surface and deep soils".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 120.32(2023). |
入库方式： OAI收割
来源：西北高原生物研究所
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