DOI: 10.1002/ghg.1950
论文题名: Estimation and mitigation of greenhouse gases in typical paddy-upland rotation systems in the middle and lower reaches of the Yangtze River, China
作者: Shi Y. ; Lou Y. ; Wang Y. ; Zuo H. ; Ojara M.A. ; Lukali A.
刊名: Greenhouse Gases: Science and Technology
ISSN: 21523878
出版年: 2020
卷: 10, 期: 1 语种: 英语
英文关键词: climate change
; conservation tillage
; DNDC
; greenhouse gas
; paddy-upland rotation
Scopus关键词: Agriculture
; Chemical industry
; Climate change
; Global warming
; Greenhouse effect
; Landforms
; Nitrogen oxides
; Soil conservation
; Agricultural greenhouse
; Climate scenarios
; Conservation tillage
; Decomposition model
; DNDC
; Global warming potential
; Middle and lower reaches of the yangtze rivers
; Optimal strategies
; Greenhouse gases
; agricultural emission
; carbon emission
; climate change
; conservation tillage
; crop rotation
; emission control
; greenhouse gas
; policy making
; China
; Yangtze River
英文摘要: Agricultural greenhouse gas (GHG) has a significant effect on climate change. The ability to quantify agricultural GHG and implement practices to mitigate its emissions is of great significance. Optimal GHG mitigation practices in the middle and lower reaches of the Yangtze River, China, have not been well documented. In this study, historical (2000–2014) and projected (2015–2049) methane (CH4) and nitrous oxide (N2O) emissions from paddy-upland crop rotations were simulated at a county scale using the denitrification–decomposition model. The results demonstrated (1) historical mean emissions of CH4, N2O, and global warming potential (GWP) were 158.6 kg-C ha−1 year−1, 0.75 kg-N ha−1 year−1, and 22.15 Tg CO2-eq year−1 in the study area (1 Tg = 1012 g); (2) CH4 emission rates significantly increased, while there was no significant change in N2O under projected RCP4.5 and RCP8.5 climate scenarios, and RCP8.5 induced 10% more CH4 than RCP4.5; (3) marginal flooding coupled with reduced-tillage practice was the optimal strategy to mitigate GHG emissions due to its lowest GWP. This study would provide insight into the agricultural GHG emissions, as well as the impact on climate change. Also, a theoretical basis for policymaking would be provided by this study. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159569
Appears in Collections: 气候变化与战略
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作者单位: School of Applied Meteorology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China; Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science and Technology, Nanjing, China; Uganda National Meteorological Authority, Kampala, Uganda; Tanzania Meteorological Agency, Dar es Salaam, Tanzania
Recommended Citation:
Shi Y.,Lou Y.,Wang Y.,et al. Estimation and mitigation of greenhouse gases in typical paddy-upland rotation systems in the middle and lower reaches of the Yangtze River, China[J]. Greenhouse Gases: Science and Technology,2020-01-01,10(1)