DOI: 10.1016/j.scitotenv.2019.134632
论文题名: Investigation of the climatological impacts of agricultural management and abandonment on a boreal bog in western Newfoundland, Canada
作者: Wang M. ; Wu J. ; Lafleur P.M. ; Luan J.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 711 语种: 英语
英文关键词: Agricultural management
; Biophysical process
; Boreal bog
; Climate effect
; Global warming potential
; Radiative forcing
Scopus关键词: Atmospheric radiation
; Carbon dioxide
; Forestry
; Global warming
; Groundwater
; Land use
; Solar radiation
; Wetlands
; Agricultural management
; Biophysical process
; Boreal bog
; Climate effects
; Global warming potential
; Radiative forcings
; Greenhouse gases
; carbon dioxide
; methane
; abandoned land
; agricultural management
; biophysics
; bog
; climate effect
; global warming
; greenhouse gas
; human activity
; radiative transfer
; agricultural management
; albedo
; Article
; carbon footprint
; carbon sink
; climate change
; cooling
; environmental impact
; greenhouse effect
; hydrology
; land use
; Newfoundland and Labrador
; peatland
; priority journal
; solar radiation
; summer
; vegetation
; water table
; winter
; Canada
; Newfoundland
; Newfoundland and Labrador
英文摘要: We compared greenhouse gas (GHG) fluxes and albedo of a pristine boreal bog and an adjacent abandoned peatland pasture in western Newfoundland, Canada to estimate the magnitude of radiative forcing (RF) created by agricultural drainage and abandonment. Our results indicated that these anthropogenic activities induced a climate cooling effect (negative RF), with the magnitude of the RF caused by the albedo change comparable to that induced by altered GHGs. Although the albedo-induced RF was positive in winter and negative in summer, the summer effect dominated because of greater solar radiation received. The climate cooling effect of GHGs change was due to an increase in the carbon dioxide sink capacity and a reduction in methane emissions under lower water table levels following agricultural drainage and abandonment. Calculation of sustained-flux global warming/cooling potentials also supported this finding. Our results show that the overall increase in albedo resulting from agricultural drainage and abandonment contributes significantly to the negative RF, strengthening the cooling effect due to the changing GHG fluxes. Therefore, changes in albedo due to altered vegetation coverage and hydrology and GHG fluxes should be considered when assessing the climatic impacts from land-use change in northern peatland. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158469
Appears in Collections: 气候变化与战略
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作者单位: School of Geography, South China Normal University, Guangzhou, 510631, China; Environment and Sustainability, School of Science and the Environment, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada; School of the Environment, Trent University, Peterborough, ON K9L 0G2, Canada; International Center for Bamboo and Rattan, Beijing, 100102, China
Recommended Citation:
Wang M.,Wu J.,Lafleur P.M.,et al. Investigation of the climatological impacts of agricultural management and abandonment on a boreal bog in western Newfoundland, Canada[J]. Science of the Total Environment,2020-01-01,711