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

doi:10.1021/acs.est.8b02271

	Magnitude and Pathways of Increased Nitrous Oxide Emissions from Uplands Following Permafrost Thaw
	Yang, Guibiao 1; Peng, Yunfeng ; Marushchak, Maija E.; Chen, Yongliang ; Wang, Guanqin 1; Li, Fei 1; Zhang, Dianye 1; Wang, Jun 1; Yu, Jianchun 1; Liu, Li 1; Qin, Shuqi 1; Kou, Dan 1; Yang, Yuanhe1
	2018
发表期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
卷号	52 期号:16 页码:9162-9169
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.
学科领域	Engineering, Environmental ; Environmental Sciences
DOI	10.1021/acs.est.8b02271
收录类别	SCI
语种	英语
WOS关键词	CLIMATE-CHANGE ; N2O EMISSIONS ; CARBON STOCKS ; NITRIC-OXIDE ; SOIL ; FEEDBACKS ; RELEASE ; METHANE ; COLLAPSE ; EXCHANGE
WOS记录号	WOS:000442706700018
出版者	AMER CHEMICAL SOC
文献子类	Article
出版地	WASHINGTON
EISSN	1520-5851
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]
作者邮箱	yhyang@ibcas.ac.cn
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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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