DOI: 10.1111/gcb.12118
论文题名: Increasing global agricultural production by reducing ozone damages via methane emission controls and ozone-resistant cultivar selection
作者: Avnery S. ; Mauzerall D.L. ; Fiore A.M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 4 起始页码: 1285
结束页码: 1299
语种: 英语
英文关键词: Agriculture
; Crop sensitivity to O3
; Cultivar selection
; Methane mitigation
; Ozone impacts
; Surface ozone
Scopus关键词: methane
; ozone
; agricultural production
; climate change
; crop yield
; cultivar
; emission control
; environmental degradation
; greenhouse gas
; maize
; methane
; ozone
; soybean
; troposphere
; wheat
; article
; crop
; Crops, Agricultural
; Methane
; Ozone
; South Asia
; Glycine max
; Triticum aestivum
; Zea mays
英文摘要: Meeting the projected 50% increase in global grain demand by 2030 without further environmental degradation poses a major challenge for agricultural production. Because surface ozone (O3) has a significant negative impact on crop yields, one way to increase future production is to reduce O3-induced agricultural losses. We present two strategies whereby O3 damage to crops may be reduced. We first examine the potential benefits of an O3 mitigation strategy motivated by climate change goals: gradual emission reductions of methane (CH4), an important greenhouse gas and tropospheric O3 precursor that has not yet been targeted for O3 pollution abatement. Our second strategy focuses on adapting crops to O3 exposure by selecting cultivars with demonstrated O3 resistance. We find that the CH4 reductions considered would increase global production of soybean, maize, and wheat by 23-102 Mt in 2030 - the equivalent of a ~2-8% increase in year 2000 production worth $3.5-15 billion worldwide (USD2000), increasing the cost effectiveness of this CH4 mitigation policy. Choosing crop varieties with O3 resistance (relative to median-sensitivity cultivars) could improve global agricultural production in 2030 by over 140 Mt, the equivalent of a 12% increase in 2000 production worth ~$22 billion. Benefits are dominated by improvements for wheat in South Asia, where O3-induced crop losses would otherwise be severe. Combining the two strategies generates benefits that are less than fully additive, given the nature of O3 effects on crops. Our results demonstrate the significant potential to sustainably improve global agricultural production by decreasing O3-induced reductions in crop yields. © 2012 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62492
Appears in Collections: 影响、适应和脆弱性
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作者单位: Program in Science, Technology, and Environmental Policy, Woodrow Wilson School of Public and International Affairs, Princeton University, Princeton, NJ, 08544, United States; Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, 08544, United States; Geophysical Fluid Dynamics Laboratory, National Oceanic and Atmospheric Administration, Princeton University, Princeton, NJ, 08540, United States; Department of Earth and Environmental Sciences, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, 10964, United States
Recommended Citation:
Avnery S.,Mauzerall D.L.,Fiore A.M.. Increasing global agricultural production by reducing ozone damages via methane emission controls and ozone-resistant cultivar selection[J]. Global Change Biology,2013-01-01,19(4)