Increased annual methane uptake driven by warmer winters in an alpine meadow
文献类型：期刊论文
| 作者 | Wang, Peiyan3; Wang, Jinsong3; Elberling, Bo1; Yang, Lu3; Chen, Weinan2,3; Song, Lei2,3; Yan, Yingjie2,3; Wang, Song2,3; Pan, Junxiao3; He, Yunlong3 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2022-02-22 |
| 页码 | 14 |
| ISSN号 | 1354-1013 |
| 关键词 | alpine meadow CH4 uptake experimental warming freeze-thaw cycle methanotroph soil available phosphorus soil pH soil temperature soil water content |
| DOI | 10.1111/gcb.16120 |
| 通讯作者 | Wang, Jinsong(wangjinsong@igsnrr.ac.cn) ; Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Pronounced nongrowing season warming and changes in soil freeze-thaw (F-T) cycles can dramatically alter net methane (CH4) exchange rates between soils and the atmosphere. However, the magnitudes and drivers of warming impacts on CH4 uptake in different stages of the F-T cycle are poorly understood in cold alpine ecosystems, which have been found to be a net sink of atmospheric CH4. Here, we reported a year-round ecosystem daily CH4 uptake in an alpine meadow on the Qinghai-Tibetan Plateau after a 5-year warming experiment that included a control, a low-level warming treatment (+2.4celcius at 5 cm soil depth), and a high-level warming treatment (+4.5celcius at 5 cm soil depth). We found that warming shortened the F-T cycle under the low-level warming and soils did not freeze under the high-level warming. Although both warming treatments increased the mean CH4 uptake rate, only the high-level warming significantly increased annual CH4 uptake compared to the control. The warming-induced stimulation of CH4 uptake mainly occurred in the cold season, which was mostly during spring thaw under low-level warming and during the frozen winter under high-level warming due to a longer period with thawed soil. We also found that warming significantly stimulated daily CH4 uptake mainly by reducing near-surface soil water content in the warm season, whereas both soil water content and temperature controlled daily CH4 uptake in different ways during the autumn freeze, frozen winter, and spring thaw periods of the control. Our study revealed a strong warming effect on CH4 uptake during the entire F-T cycle in the alpine meadow, especially the unfrozen winter. Our results also suggested the important roles of soil pH, available phosphorus, and methanotroph abundance in regulating annual CH4 uptake in response to warming, which should be incorporated into biogeochemical models for accurately forecasting CH4 fluxes under future climate scenarios. |
| WOS关键词 | TIBETAN PLATEAU ; NITROGEN DEPOSITION ; EDDY COVARIANCE ; SOIL ; PERMAFROST ; EMISSIONS ; METHANOTROPHS ; DEGRADATION ; TEMPERATURE ; OXIDATION |
| 资助项目 | National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] ; National Natural Science Foundation of China[31800404] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2019QZKK0302] ; China Postdoctoral Science Foundation[2020M680661] ; Danish National Research Foundation[CENPERM DNRF100] ; University of Copenhagen (UCPH) |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000759240100001 |
| 资助机构 | National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; China Postdoctoral Science Foundation ; Danish National Research Foundation ; University of Copenhagen (UCPH) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/171450]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Jinsong; Niu, Shuli |
| 作者单位 | 1.Univ Copenhagen, Dept Geosci & Nat Resource Management, Ctr Permafrost CENPERM, Copenhagen, Denmark 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Peiyan,Wang, Jinsong,Elberling, Bo,et al. Increased annual methane uptake driven by warmer winters in an alpine meadow[J]. GLOBAL CHANGE BIOLOGY,2022:14. |
| APA | Wang, Peiyan.,Wang, Jinsong.,Elberling, Bo.,Yang, Lu.,Chen, Weinan.,...&Niu, Shuli.(2022).Increased annual methane uptake driven by warmer winters in an alpine meadow.GLOBAL CHANGE BIOLOGY,14. |
| MLA | Wang, Peiyan,et al."Increased annual methane uptake driven by warmer winters in an alpine meadow".GLOBAL CHANGE BIOLOGY (2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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