Effects of warming on N2O fluxes in a boreal peatland of Permafrost region, Northeast China

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	Effects of warming on N2O fluxes in a boreal peatland of Permafrost region, Northeast China
	Q. Cui, C. C. Song, X. W. Wang, F. X. Shi, X. Y. Yu and W. W. Tan
刊名	Science of the Total Environment
	2018
卷号	616 页码:427-434
通讯作者	宋长春
中文摘要	Climate warming is expected to increasingly influence boreal peatlands and alter their greenhouse gases emissions. However, the effects of warming on N2O fluxes and the N2O budgets were ignored in boreal peatlands. Therefore, in a boreal peatland of permafrost zone in Northeast China, a simulated warming experiment was conducted to investigate the effects of warming on N2O fluxes in Betula. Fruticosa community (B. Fruticosa) and Ledum. palustre community (L. palustre) during the growing seasons from 2013 to 2015. Results showed that warming treatment increased air temperature at 1.5 m aboveground and soil temperature at 5 cm depth by 0.6 degrees C and 2 degrees C, respectively. The average seasonal N2O fluxes ranged from 6.62 to 9.34 mu g m(-2) h(-1) in the warming plot and ranged from 0.41 to 4.55 mu g m(-2) h(-1) in the control plots. Warming treatment increased N2O fluxes by 147% and transformed the boreal peatlands from a N2O sink to a source. The primary driving factors for N2O fluxes were soil temperature and active layer depth, whereas soil moisture showed a weak correlation with N2O fluxes. The results indicated that warming promoted N2O fluxes by increasing soil temperature and active layer depth in a boreal peatland of permafrost zone in Northeast China. Moreover, elevated N2O fluxes persisted in this region will potentially drive a noncarbon feedback to ongoing climate change. (c) 2017 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.iga.ac.cn/handle/131322/8801]
专题	东北地理与农业生态研究所_湿地生态系统管理学科组_期刊论文
推荐引用方式 GB/T 7714	Q. Cui, C. C. Song, X. W. Wang, F. X. Shi, X. Y. Yu and W. W. Tan. Effects of warming on N2O fluxes in a boreal peatland of Permafrost region, Northeast China[J]. Science of the Total Environment,2018,616:427-434.
APA	Q. Cui, C. C. Song, X. W. Wang, F. X. Shi, X. Y. Yu and W. W. Tan.(2018).Effects of warming on N2O fluxes in a boreal peatland of Permafrost region, Northeast China.Science of the Total Environment,616,427-434.
MLA	Q. Cui, C. C. Song, X. W. Wang, F. X. Shi, X. Y. Yu and W. W. Tan."Effects of warming on N2O fluxes in a boreal peatland of Permafrost region, Northeast China".Science of the Total Environment 616(2018):427-434.