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Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw

文献类型：期刊论文

作者Yang, Guibiao1; Peng, Yunfeng; Marushchak, Maija E.; Chen, Yongliang; Wang, Guanqin1; Li, Fei1; Zhang, Dianye1; Wang, Jun1; Yu, Jianchun1; Liu, Li1
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期2018
卷号52期号:16页码:9162-9169
ISSN号0013-936X
DOI10.1021/acs.est.8b02271
文献子类Article
英文摘要Permafrost thawing may release nitrous oxide (N2O) due to large N storage in cold environments. However, N2O emissions from permafrost regions have received little attention to date, particularly with respect to the underlying microbial mechanisms. We examined the magnitude of N2O fluxes following upland thermokarst formation along a 20-year thaw sequence within a thermo-erosion gully in a Tibetan swamp meadow. We also determined the importance of environmental factors and the related microbial functional gene abundance. Our results showed that permafrost thawing led to a mass release of N2O in recently collapsed sites (3 years ago), particularly in exposed soil patches, which presented post-thaw emission rates equivalent to those from agricultural and tropical soils. In addition to abiotic factors, soil microorganisms exerted significant effects on the variability in the N2O emissions along the thaw sequence and between vegetated and exposed patches. Overall, our results demonstrate that upland thermokarst formation can lead to enhanced N2O emissions, and that the global warming potential (GWP) of N2O at the thermokarst sites can reach 60% of the GWP of CH4 (vs similar to 6% in control sites), highlighting the potentially strong noncarbon (C) feedback to climate warming in permafrost regions.
学科主题Engineering, Environmental ; Environmental Sciences
出版地WASHINGTON
电子版国际标准刊号1520-5851
WOS关键词CLIMATE-CHANGE ; N2O EMISSIONS ; CARBON STOCKS ; NITRIC-OXIDE ; SOIL ; FEEDBACKS ; RELEASE ; METHANE ; COLLAPSE ; EXCHANGE
语种英语
WOS记录号WOS:000442706700018
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670482, 31770521] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-SMC049] ; Chinese Academy of Sciences-Peking University Pioneer Cooperation Team ; Academy of FinlandAcademy of FinlandEuropean Commission [314630]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20417]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Marushchak, Maija E.] Univ Eastern Finland, Dept Environm & Biol Sci, Kuopio 70211, Finland
推荐引用方式
GB/T 7714		 Yang, Guibiao,Peng, Yunfeng,Marushchak, Maija E.,et al. Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(16):9162-9169.
APA Yang, Guibiao.,Peng, Yunfeng.,Marushchak, Maija E..,Chen, Yongliang.,Wang, Guanqin.,...&Yang, Yuanhe.(2018).Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(16),9162-9169.
MLA Yang, Guibiao,et al."Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.16(2018):9162-9169.

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来源：植物研究所

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