Fast labile carbon and litter exhaustion under no-tillage after 5-year soil warming
文献类型：期刊论文
| 作者 | Hou, Ruixing1,2,3; Gong, Huarui2,3; Ouyang, Zhu2,3; Dorodnikov, Maxim4,5,6; Kuzyakov, Yakov4,5,7 |
| 刊名 | CATENA
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 231页码:8 |
| ISSN号 | 0341-8162 |
| 关键词 | No-tillage Total and labeled CO 2 efflux Temperature sensitivity 14 C litter decomposition Extracellular enzyme activity |
| DOI | 10.1016/j.catena.2023.107337 |
| 通讯作者 | Hou, Ruixing(hourx@igsnrr.ac.cn) |
| 英文摘要 | No-tillage continuously contribute organic matter and increase carbon sequestration in the soil. However, global warming may stimulate microbial activity and accelerate soil organic matter (SOM) decomposition, also especially in the topsoil. Understanding the responses of microbial utilization of SOM accumulated under no-tillage to higher temperatures is necessary to develop management strategies to sustain soil fertility. Determine the response of microbial extracellular enzyme activities and SOM decomposition to long-term warming by incorporation of 14C-labelled maize litter to in situ warmed soil from no-tillage and till systems. We compared decomposability of litter and SOM in soils from a 5-year in situ experiment with two tillage systems (Till and Notill) and under two temperature levels: ambient temperature and continuous soil warming (+1.6 degrees C at 5 cm soil depth). We hypothesized that decomposition of crop litter (14C-labeled maize) at increasing temperature (15, 21, and 27 degrees C for 59 days) will be more intensive in warmed soil vs. ambient and the effects should be stronger under No-till vs. Till system. As expected, soil from field warming had always higher total CO2 efflux (from 5.5 to 12%) than the non-warmed counterpart in Till and No-till systems. Five-year warming increased temperature sensitivity (Q10) of CO2 efflux for 2-folds under No-tillage vs. Till. Litter decomposition (measured as 14CO2) in No-till with warming was 7.9% greater than in No-tillage without warming. Three extracellular enzymes (& beta;-glucosidase, chitinase, and sulfatase) had higher activities under warming in No-till but not under Till system. Our results demonstrated that the 5-year in situ warming accelerated preferential microbial utilization of labile SOM fractions in No-till notably, and from stable SOM in Till system. Consequently, warming will accelerate SOM decomposition in future and this acceleration will be especially pronounced on the labile SOM under No-tillage systems. |
| WOS关键词 | ORGANIC-MATTER DECOMPOSITION ; THERMAL-ACCLIMATION ; RESPIRATION ; SEQUESTRATION ; COMMUNITIES ; SENSITIVITY ; ADAPTATION ; EFFICIENCY ; TEMPERATE ; AGGREGATE |
| 资助项目 | Strategic Pilot Science and Technology Special' of Chinese Academy of Sciences[XDA28130301] ; National Natural Science Foundation of China[32071607] ; China Postdoctoral Science Foundation[2022M713115] ; Basal Research Fund of Central Public Welfare Scientific Institution[CAFYBB2016QA021] ; Ministry of Education and Science of the Russian Federation[02.A03.21.0008] ; RUDN University program |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001055037300001 |
| 资助机构 | Strategic Pilot Science and Technology Special' of Chinese Academy of Sciences ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Basal Research Fund of Central Public Welfare Scientific Institution ; Ministry of Education and Science of the Russian Federation ; RUDN University program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196552]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Hou, Ruixing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Yucheng Comprehens Expt Stn, Beijing 100101, Peoples R China 4.Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, Gottingen, Germany 5.RUDN Univ, Peoples Friendship Univ Russia, Moscow 117198, Russia 6.Univ Goettingen, Biogeochem Agroecosystems, D-37077 Gottingen, Germany 7.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia |
| 推荐引用方式 GB/T 7714 | Hou, Ruixing,Gong, Huarui,Ouyang, Zhu,et al. Fast labile carbon and litter exhaustion under no-tillage after 5-year soil warming[J]. CATENA,2023,231:8. |
| APA | Hou, Ruixing,Gong, Huarui,Ouyang, Zhu,Dorodnikov, Maxim,&Kuzyakov, Yakov.(2023).Fast labile carbon and litter exhaustion under no-tillage after 5-year soil warming.CATENA,231,8. |
| MLA | Hou, Ruixing,et al."Fast labile carbon and litter exhaustion under no-tillage after 5-year soil warming".CATENA 231(2023):8. |
入库方式： OAI收割
来源：地理科学与资源研究所
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