gchange  > 气候变化与战略
DOI: 10.1111/gcb.14514
Scopus ID: 2-s2.0-85058677594
Title:
Global soil nitrous oxide emissions since the preindustrial era estimated by an ensemble of terrestrial biosphere models: Magnitude, attribution, and uncertainty
Author: Tian H.; Yang J.; Xu R.; Lu C.; Canadell J.G.; Davidson E.A.; Jackson R.B.; Arneth A.; Chang J.; Ciais P.; Gerber S.; Ito A.; Joos F.; Lienert S.; Messina P.; Olin S.; Pan S.; Peng C.; Saikawa E.; Thompson R.L.; Vuichard N.; Winiwarter W.; Zaehle S.; Zhang B.
Source Publication: Global Change Biology
ISSN: 13541013
Indexed By: SCI ; SCI-E
Publishing Year: 2019
Volume: 25, Issue:2
pages begin: 640
pages end: 659
Language: 英语
Keyword: global nitrogen cycle ; greenhouse gas emission ; nitrous oxide ; process-based modeling ; soil N 2 O emission
Scopus Keyword: atmospheric deposition ; biosphere ; emission inventory ; greenhouse gas ; nitrogen ; nitrogen cycle ; nitrous oxide ; soil emission ; temporal variation ; terrestrial environment
English Abstract: Our understanding and quantification of global soil nitrous oxide (N 2 O) emissions and the underlying processes remain largely uncertain. Here, we assessed the effects of multiple anthropogenic and natural factors, including nitrogen fertilizer (N) application, atmospheric N deposition, manure N application, land cover change, climate change, and rising atmospheric CO 2 concentration, on global soil N 2 O emissions for the period 1861–2016 using a standard simulation protocol with seven process-based terrestrial biosphere models. Results suggest global soil N 2 O emissions have increased from 6.3 ± 1.1 Tg N 2 O-N/year in the preindustrial period (the 1860s) to 10.0 ± 2.0 Tg N 2 O-N/year in the recent decade (2007–2016). Cropland soil emissions increased from 0.3 Tg N 2 O-N/year to 3.3 Tg N 2 O-N/year over the same period, accounting for 82% of the total increase. Regionally, China, South Asia, and Southeast Asia underwent rapid increases in cropland N 2 O emissions since the 1970s. However, US cropland N 2 O emissions had been relatively flat in magnitude since the 1980s, and EU cropland N 2 O emissions appear to have decreased by 14%. Soil N 2 O emissions from predominantly natural ecosystems accounted for 67% of the global soil emissions in the recent decade but showed only a relatively small increase of 0.7 ± 0.5 Tg N 2 O-N/year (11%) since the 1860s. In the recent decade, N fertilizer application, N deposition, manure N application, and climate change contributed 54%, 26%, 15%, and 24%, respectively, to the total increase. Rising atmospheric CO 2 concentration reduced soil N 2 O emissions by 10% through the enhanced plant N uptake, while land cover change played a minor role. Our estimation here does not account for indirect emissions from soils and the directed emissions from excreta of grazing livestock. To address uncertainties in estimating regional and global soil N 2 O emissions, this study recommends several critical strategies for improving the process-based simulations. © 2018 John Wiley & Sons Ltd
Citation statistics:
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/117506
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Tian H.,Yang J.,Xu R.,et al. Global soil nitrous oxide emissions since the preindustrial era estimated by an ensemble of terrestrial biosphere models: Magnitude, attribution, and uncertainty[J]. Global Change Biology,2019-01-01,25(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Tian H.]'s Articles
[Yang J.]'s Articles
[Xu R.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Tian H.]'s Articles
[Yang J.]'s Articles
[Xu R.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Tian H.]‘s Articles
[Yang J.]‘s Articles
[Xu R.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.