Increased CO2 emissions surpass reductions of non-CO2 emissions more under higher experimental warming in an alpine meadow
文献类型：期刊论文
| 作者 | Wang, Jinsong5,6,7; Quan, Quan5,8; Chen, Weinan5,8; Tian, Dashuan5; Ciais, Philippe2; Crowther, Thomas W.3; Mack, Michelle C.6,7; Poulter, Benjamin1; Tian, Hanqin4; Luo, Yiqi6,7 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2021-05-15 |
| 卷号 | 769页码:11 |
| 关键词 | CO2 emissions Cold ecosystem Greenhouse gas balance Non-growing season Warming magnitude |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.144559 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | It is well documented that warming can accelerate greenhouse gas (GHG) emissions, further inducing a positive feedback and reinforcing future climate warming. However, how different kinds of GHGs respond to various warming magnitudes remains largely unclear, especially in the cold regions that are more sensitive to climate warming. Here, we concurrently measured carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) fluxes and their total balance in an alpine meadow in response to three levels of warming (ambient, +1.5 degrees C, +3.0 degrees C). We found warming-induced increases in CH4 uptake, decreases in N2O emissions and increases in CO2 emissions at the annual basis. Expressed as CO2-equivalents with a global warming potential of 100 years (GWP100), the enhancement of CH4 uptake and reduction of N2O emissions offset only 9% of the warming-induced increase in CO2 emissions for 15 degrees C warming, and only 7% for 3.0 degrees C warming. CO2 emissions were strongly stimulated, leading to a significantly positive feedback to climate system, for 3.0 degrees C warming but less for 1.5 degrees C warming. The warming with 3.0 degrees C altered the total GHG balance mainly by stimulating CO2 emissions in the non-growing season due to warmer soil temperatures, longer unfrozen period, and increased soil water content. The findings provide an empirical evidence that warming beyond global 2 degrees C target can trigger a positive GHG-climate feedback and highlight the contribution from non-growing season to this positive feedback loop in cold ecosystems. (C) 2021 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[31988102] ; National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31800404] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0302] ; International Postdoctoral Exchange Fellowship Program[20180005] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000626618100043 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; International Postdoctoral Exchange Fellowship Program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/161858]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.NASA, Goddard Space Flight Ctr, Code 916, Greenbelt, MD 20771 USA 2.UVSQ, Lab Sci Climat & Environm LSCE, CEA, CNRS, F-91191 Gif Sur Yvette, France 3.Swiss Fed Inst Technol, Dept Environm Syst Sci, Inst Integrat Biol, CH-8092 Zurich, Switzerland 4.Auburn Univ, Int Ctr Climate & Global Change Res, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA 5.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 6.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA 7.No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA 8.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jinsong,Quan, Quan,Chen, Weinan,et al. Increased CO2 emissions surpass reductions of non-CO2 emissions more under higher experimental warming in an alpine meadow[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,769:11. |
| APA | Wang, Jinsong.,Quan, Quan.,Chen, Weinan.,Tian, Dashuan.,Ciais, Philippe.,...&Niu, Shuli.(2021).Increased CO2 emissions surpass reductions of non-CO2 emissions more under higher experimental warming in an alpine meadow.SCIENCE OF THE TOTAL ENVIRONMENT,769,11. |
| MLA | Wang, Jinsong,et al."Increased CO2 emissions surpass reductions of non-CO2 emissions more under higher experimental warming in an alpine meadow".SCIENCE OF THE TOTAL ENVIRONMENT 769(2021):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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