Microbial Enzyme Activities Drive CO2 and CH4 Emissions During Freeze-Thaw Cycles in Peatlands
文献类型：期刊论文
| 作者 | Sun, Jiahong1,2,3; Yu, Zicheng1,2,3,4; Dong, Yanmin1,2,3; Wang, Shengzhong1,2,3; Pan, Junxiao5; Liu, Shasha1,2,3; Liu, Ziping1,2,3; Li, Hongkai1,2,3; Xu, Zhiwei1,2,3 |
| 刊名 | EUROPEAN JOURNAL OF SOIL SCIENCE
 |
| 出版日期 | 2025-09-28 |
| 卷号 | 76期号:5页码:e70206 |
| 关键词 | active organic carbon and nitrogen carbon emissions enzyme activities freeze-thaw cycles microbial PLFAs |
| ISSN号 | 1351-0754 |
| DOI | 10.1111/ejss.70206 |
| 产权排序 | 5 |
| 文献子类 | Article |
| 英文摘要 | Climate change is projected to intensify freeze-thaw cycles (FTCs) in the peatlands of Changbai Mountain, influencing soil biogeochemistry and carbon cycling. In order to elucidate microbial regulation of carbon emissions during FTCs, we performed controlled laboratory simulations using soils from a peatland in the Changbai Mountains, Northeast China. Our findings indicate that after 15 FTCs with small (-5 degrees C to 5 degrees C) and large amplitudes (-10 degrees C to 10 degrees C), the carbon dioxide (CO2) emission rates from surface soils declined by 63.8% and 64.2%, respectively, compared to the constant-temperature control; in deeper soils, the respective declines were 27.5% and 50.9%. We found that oxidase activities were negatively correlated with CO2 emissions during FTCs and served as the primary driver of these emissions. Methane (CH4) was oxidized during FTCs, with oxidation rates inversely related to FTC amplitude and greater under small amplitude than large amplitude conditions. Soil hydrolase activities were negatively correlated with CH4 oxidation rates, functioning as the primary regulators of methane oxidation. The carbon emissions were subsequently influenced by microbial phospholipid fatty acids, which modulated enzyme activities. This investigation comprehensively explores the interactive effects of soil enzymes, organic carbon fractions, and microbial community composition on carbon emissions. The results underscore the central role of soil enzymes in mediating these processes. Collectively, these findings provide novel insights into the microbial mechanisms governing greenhouse gas emissions from peatlands during FTCs. |
| URL标识 | 查看原文 |
| WOS关键词 | SNOW COVER MANIPULATION ; CARBON-USE EFFICIENCY ; METHANE PRODUCTION ; ORGANIC-MATTER ; SOIL ; NITROGEN ; RESPONSES ; COMMUNITIES ; NORTHEAST ; AVAILABILITY |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001582980800001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217447]  |
| 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 | Li, Hongkai; Xu, Zhiwei |
| 作者单位 | 1.Northeast Normal Univ, State Environm Protect, Key Lab Wetland Ecol & Vegetat Restorat, Changchun, Peoples R China; 2.Northeast Normal Univ, Sch Geog Sci, Key Lab Geog Proc & Ecol Secur Changbai Mt, Minist Educ, Changchun, Peoples R China; 3.Northeast Normal Univ, Inst Peat & Mire Res, Jilin Prov Key Lab Wetland Ecol Proc & Environm Ch, Changchun, Peoples R China; 4.Chinese Acad Sci, Northeast Inst Geog & Agroecol, State Key Lab Black Soils Conservat & Utilizat, Jilin, Peoples R China; 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Jiahong,Yu, Zicheng,Dong, Yanmin,et al. Microbial Enzyme Activities Drive CO2 and CH4 Emissions During Freeze-Thaw Cycles in Peatlands[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2025,76(5):e70206. |
| APA | Sun, Jiahong.,Yu, Zicheng.,Dong, Yanmin.,Wang, Shengzhong.,Pan, Junxiao.,...&Xu, Zhiwei.(2025).Microbial Enzyme Activities Drive CO2 and CH4 Emissions During Freeze-Thaw Cycles in Peatlands.EUROPEAN JOURNAL OF SOIL SCIENCE,76(5),e70206. |
| MLA | Sun, Jiahong,et al."Microbial Enzyme Activities Drive CO2 and CH4 Emissions During Freeze-Thaw Cycles in Peatlands".EUROPEAN JOURNAL OF SOIL SCIENCE 76.5(2025):e70206. |
入库方式： OAI收割
来源：地理科学与资源研究所
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