Responses of greenhouse gas fluxes to experimental warming in wheat season under conventional tillage and no-tillage fields
Tu, C; Li, FD
2017
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume54Pages:314-327
AbstractUnderstanding the effects of warming on greenhouse gas (GHG, such as N2O, CH4 and CO2) feedbacks to climate change represents the major environmental issue. However, little information is available on how warming effects on CHG fluxes in farmland of North China Plain (NCP). An infrared warming simulation experiment was used to assess the responses of N2O, CI-I-4 and CO2 to warming in wheat season of 2012-2014 from conventional tillage (CT) and no-tillage (NT) systems. The results showed that warming increased cumulative N2O emission by 7.7% in CT but decreased it by 9.7% in NT fields (p < 0.05). Cumulative CH4 uptake and CO2 emission were increased by 28.7%-51.7% and 6.3%-15.9% in both two tillage systems, respectively (p < 0.05). The stepwise regressions relationship between GHG fluxes and soil temperature and soil moisture indicated that the supply soil moisture due to irrigation and precipitation would enhance the positive warming effects on CHG fluxes in two wheat seasons. However, in 2013, the long-term drought stress due to infrared wanning and less precipitation decreased N2O and CO2 emission in warmed treatments. In contrast, warming during this time increased CH4 emission from deep soil depth. Across two years wheat seasons, warnaing significantly decreased by 30.3% and 63.9% sustained-flux global warming potential (SGWP) of N20 and CH4 expressed as CO2 equivalent in CT and NT fields, respectively. However, increase in soil CO2 emission indicated that future wan-ning projection might provide positive feedback between soil C release and global warming in NCP. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
SubtypeJournal
KeywordClimate warming Greenhouse gas fluxes (N2O, CH4, CO2) Conventional tillage No-tillage Soil temperature Soil moisture
Subject AreaEnvironmental Sciences & Ecology
WOS Subject ExtendedEnvironmental Sciences
WOS KeywordNORTH CHINA PLAIN ; NITROUS-OXIDE EMISSIONS ; QINGHAI-TIBET PLATEAU ; INCREASED TEMPERATURE ; RESIDUE MANAGEMENT ; CROPPING SYSTEM ; CARBON-DIOXIDE ; N2O EMISSIONS ; LONG-TERM ; SOIL
Indexed BySCI
Language英语
WOS IDWOS:000399327300033
PublisherSCIENCE PRESS
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44081
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Tu, C,Li, FD. Responses of greenhouse gas fluxes to experimental warming in wheat season under conventional tillage and no-tillage fields[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2017,54:314-327.
APA Tu, C,&Li, FD.(2017).Responses of greenhouse gas fluxes to experimental warming in wheat season under conventional tillage and no-tillage fields.JOURNAL OF ENVIRONMENTAL SCIENCES,54,314-327.
MLA Tu, C,et al."Responses of greenhouse gas fluxes to experimental warming in wheat season under conventional tillage and no-tillage fields".JOURNAL OF ENVIRONMENTAL SCIENCES 54(2017):314-327.
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