DOI: 10.1016/j.scitotenv.2019.135969
论文题名: Assessing climate change impacts on greenhouse gas emissions, N losses in drainage and crop production in a subsurface drained field
作者: Jiang Q. ; Qi Z. ; Xue L. ; Bukovsky M. ; Madramootoo C.A. ; Smith W.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 705 语种: 英语
英文关键词: Agricultural system models
; CO2 emission
; Denitrification
; Mineralization,
; N2O emission
; Water quality
Scopus关键词: Agricultural wastes
; Atmospheric chemistry
; Atmospheric temperature
; Carbon dioxide
; Crops
; Cultivation
; Denitrification
; Digital storage
; Drainage
; Gas emissions
; Global warming
; Greenhouse gases
; Life cycle
; Mineralogy
; Organic carbon
; Productivity
; Soil pollution
; Water quality
; Agricultural productivity
; Agricultural system
; Atmospheric carbon dioxide concentration
; CO2 emissions
; Global warming potential
; Mineralization
; Soil microbial activities
; Soil organic carbon storages
; Climate models
; carbon dioxide
; carbon emission
; climate change
; climate effect
; crop production
; denitrification
; drainage
; environmental assessment
; greenhouse gas
; mineralization
; nitrogen
; nitrogen dioxide
; soybean
; water quality
; Article
; bioaccumulation
; Canada
; carbon footprint
; carbon mineralization
; carbon storage
; climate change
; concentration (parameter)
; crop production
; decomposition
; denitrification
; environmental impact assessment
; environmental temperature
; harvest
; humidity
; maize
; nonhuman
; photosynthesis
; plant water use
; priority journal
; seedling
; solar radiation
; soybean
; Canada
; Quebec [Canada]
; Glycine max
; Zea mays
英文摘要: Future climate change-driven alterations in precipitation patterns, increases in temperature, and rises in atmospheric carbon dioxide concentration ([CO2]atm) are expected to alter agricultural productivity and environmental quality, while high latitude countries like Canada are likely to face more challenges from global climate change. However, potential climate change impact on GHG emissions from tile-drained fields is poorly documented. Accordingly, climate change impacts on GHG emissions, N losses to drainage and crop production in a subsurface-drained field in Southern Quebec, Canada were assessed using calibrated and validated RZWQM2 model. The RZWQM2 model was run for a historical period (1971–2000) and for a future period (2038 to 2070) using data generated from 11 different GCM-RCMs (global climate models coupled with regional climate models). Under the projected warmer and higher rainfall conditions mean drainage flow was predicted to increase by 17%, and the N losses through subsurface drains increase by 47%. Despite the negative effect of warming temperature on crop yield, soybean yield was predicted to increase by 31% due to increased photosynthesis rates and improved crop water use efficiency (WUE) under elevated [CO2]atm, while corn yield was reduced by 7% even with elevated [CO2]atm because of a shorter life cycle from seedling to maturity resulted from higher temperature. The N2O emissions would be enhanced by 21% due to greater denitrification and mineralization, while CO2 emissions would increase by 16% because of more crop biomass accumulation, higher crop residue decomposition, and greater soil microbial activities. Soil organic carbon storage was predicted to decrease 22% faster in the future, which would result in higher global warming potential in turn. This study demonstrates the potential of exacerbating GHG emissions and water quality problems and reduced corn yield under climate change impact in subsurface drained fields in southern Quebec. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159200
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada; National Center for Atmospheric Research, Boulder, CO 80307, United States; Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON K1A 0C6, Canada
Recommended Citation:
Jiang Q.,Qi Z.,Xue L.,et al. Assessing climate change impacts on greenhouse gas emissions, N losses in drainage and crop production in a subsurface drained field[J]. Science of the Total Environment,2020-01-01,705