气候变化领域集成服务门户(CCPortal): Meeting future food demand with current agricultural resources

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DOI	10.1016/j.gloenvcha.2016.05.004
	Meeting future food demand with current agricultural resources
	Davis K.F.; Gephart J.A.; Emery K.A.; Leach A.M.; Galloway J.N.; D'Odorico P.
发表日期	2016
ISSN	0959-3780
卷号	39
英文摘要	Meeting the food needs of the growing and increasingly affluent human population with the planet's limited resources is a major challenge of our time. Seen as the preferred approach to global food security issues, 'sustainable intensification' is the enhancement of crop yields while minimizing environmental impacts and preserving the ability of future generations to use the land. It is still unclear to what extent sustainable intensification would allow humanity to meet its demand for food commodities. Here we use the footprints for water, nitrogen, carbon and land to quantitatively evaluate resource demands and greenhouse gas (GHG) emissions of future agriculture and investigate whether an increase in these environmental burdens of food production can be avoided under a variety of dietary scenarios. We calculate average footprints of the current diet and find that animal products account for 43-87% of an individual's environmental burden - compared to 18% of caloric intake and 39% of protein intake. Interestingly, we find that projected improvements in production efficiency would be insufficient to meet future food demand without also increasing the total environmental burden of food production. Transitioning to less impactful diets would in many cases allow production efficiency to keep pace with growth in human demand while minimizing the food system's environmental burden. This study provides a useful approach for evaluating the attainability of sustainable targets and for better integrating food security and environmental impacts. © 2016 Elsevier Ltd.
英文关键词	Dietary change; Food revolution; Footprint; Future food demand; Sustainable intensification
学科领域	agricultural intensification; crop yield; diet; ecological footprint; environmental impact; food production; food security; future prospect; green revolution; greenhouse gas; sustainable development; Animalia
语种	英语
scopus关键词	agricultural intensification; crop yield; diet; ecological footprint; environmental impact; food production; food security; future prospect; green revolution; greenhouse gas; sustainable development; Animalia
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117358
作者单位	University of Virginia, Department of Environmental Sciences, 291 McCormick Road, Charlottesville, VA 22904, United States; University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA 93106, United States; University of New Hampshire, 107 Nesmith Hall 131 Main Street, Durham, NH 03824, United States; National Social Environmental Synthesis Center, University of Maryland, 1 Park Place Suite 300, Annapolis, MD 21401, United States
推荐引用方式 GB/T 7714	Davis K.F.,Gephart J.A.,Emery K.A.,et al. Meeting future food demand with current agricultural resources[J],2016,39.
APA	Davis K.F.,Gephart J.A.,Emery K.A.,Leach A.M.,Galloway J.N.,&D'Odorico P..(2016).Meeting future food demand with current agricultural resources.Global Environmental Change,39.
MLA	Davis K.F.,et al."Meeting future food demand with current agricultural resources".Global Environmental Change 39(2016).