Substrate availability reconciles the contrasting temperature response of SOC mineralization in different soil profiles
文献类型：期刊论文
| 作者 | Liu, Yuan; Kumar, Amit; Tiemann, Lisa K.; Li, Jie; Chang, Jingjing; Xu, Li; He, Nianpeng |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2023-07-25 |
| 卷号 | N/A |
| 关键词 | Soil organic carbon mineralization Temperature sensitivity Substrate availability Root exudates Soil depth Buried soil |
| ISSN号 | 1439-0108 |
| DOI | 10.1007/s11368-023-03602-y |
| 产权排序 | 1 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | PurposeThe purpose of this study was to investigate how changes in substrate availability (stimulating root exudate input) affect the temperature response (Q(10)) of soil organic carbon (SOC) mineralization across different soil profiles to increase our ability to predict the response of soil organic matter dynamics to climate change.Materials and methodsWe sampled the topsoil and subsoil of two typical mineral soil profiles and one buried soil profile. Soils were incubated at 10-25 & DEG;C at 0.75 & DEG;C intervals, SOC mineralization rates were continuously measured with and without glucose addition, and Q(10) was calculated.Results and discussionOur results showed that Q(10) decreased with increasing depth in typical mineral soils, but decreased before increasing with depth in buried soil. As expected, substrate addition significantly increased Q(10) across soil depths; however, the magnitude of this increase (& UDelta;Q(10)) differed with soil depth and type. Unexpectedly, in typical mineral soils, & UDelta;Q(10) was higher in topsoil than in subsoils, and vice versa for buried soil. & UDelta;Q(10) was negatively correlated with initial soil substrate availability (CAI) and positively correlated with soil inorganic N.ConclusionsOverall, our results suggested that increased substrate availability under climate change scenarios (i.e., increased root exudates with elevated CO2 concentrations) could further strengthen the temperature response of SOC mineralization, especially in soils with high inorganic N content or regions with high N deposition rates. |
| WOS关键词 | ORGANIC-MATTER DECOMPOSITION ; MICROBIAL RESPIRATION ; CARBON DECOMPOSITION ; ROOT EXUDATION ; CO2 PRODUCTION ; SENSITIVITY ; FEEDBACKS ; BIOMASS ; FOREST ; PROTECTION |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001035518200002 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/194544]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Michigan State University 2.Institute of Geographic Sciences & Natural Resources Research, CAS 3.University of Chinese Academy of Sciences, CAS 4.Chinese Academy of Sciences 5.Northeast Institute of Geography & Agroecology, CAS 6.Northeast Forestry University - China 7.United Arab Emirates University |
| 推荐引用方式 GB/T 7714 | Liu, Yuan,Kumar, Amit,Tiemann, Lisa K.,et al. Substrate availability reconciles the contrasting temperature response of SOC mineralization in different soil profiles[J]. JOURNAL OF SOILS AND SEDIMENTS,2023,N/A. |
| APA | Liu, Yuan.,Kumar, Amit.,Tiemann, Lisa K..,Li, Jie.,Chang, Jingjing.,...&He, Nianpeng.(2023).Substrate availability reconciles the contrasting temperature response of SOC mineralization in different soil profiles.JOURNAL OF SOILS AND SEDIMENTS,N/A. |
| MLA | Liu, Yuan,et al."Substrate availability reconciles the contrasting temperature response of SOC mineralization in different soil profiles".JOURNAL OF SOILS AND SEDIMENTS N/A(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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