气候变化领域集成服务门户(CCPortal): The impact of biofuel-induced food-price inflation on dietary energy demand and dietary greenhouse gas emissions

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DOI	10.1016/j.gloenvcha.2013.09.013
	The impact of biofuel-induced food-price inflation on dietary energy demand and dietary greenhouse gas emissions
	Scovronick N.; Wilkinson P.
发表日期	2013
ISSN	0959-3780
卷号	23 期号:6
英文摘要	Dramatic increases in liquid biofuel production have led to concerns about associated impacts on food prices, with many modeling studies showing significant biofuel-related price inflation. In turn, by changing patterns of food demand, biofuel production may indirectly influence greenhouse gas emissions. We estimated changes to dietary energy (calorie) demand and greenhouse gas emissions embodied in average diets under different biofuel-related food-price scenarios for Brazil, China and the United States, using food-price projections and food-price elasticities. Average energy demand decreased in all countries, from about 40. kcal per person per day in Brazil under a moderate price inflation scenario - a reduction of 1% relative to the (2009) reference scenario - to nearly 300 per day in the United States with high price inflation - almost 8% of reference levels. However, emissions per calorie increased slightly in all three countries. In terms of total greenhouse gas emissions, the results are suggestive of overall reductions only in the United States, where average reductions ranged from about 40 to 110. kg of carbon dioxide equivalent emissions per person per year. In China, the direction of impact is unclear, but the net change is likely to be small. Brazilian results were sensitive to parameter values and the direction and magnitude of impact is therefore uncertain. Despite the uncertainty, even small changes (positive or negative) in individual dietary emissions can produce large changes at the population level, arguing for the inclusion of the dietary pathway in greenhouse gas accounting of liquid biofuels. © 2013 Elsevier Ltd.
英文关键词	Biofuel; Climate change; Food prices; Greenhouse gases; Nutrition; Public health
学科领域	biofuel; demand analysis; diet; emission control; energy efficiency; greenhouse gas; magnitude; nutrition; price dynamics; public health; Brazil; China
语种	英语
scopus关键词	biofuel; demand analysis; diet; emission control; energy efficiency; greenhouse gas; magnitude; nutrition; price dynamics; public health; Brazil; China
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/117849
作者单位	London School of Hygiene and Tropical Medicine, Department of Social and Environmental Health Research, 15-17 Tavistock Place, London, WC1H 9SH, United Kingdom
推荐引用方式 GB/T 7714	Scovronick N.,Wilkinson P.. The impact of biofuel-induced food-price inflation on dietary energy demand and dietary greenhouse gas emissions[J],2013,23(6).
APA	Scovronick N.,&Wilkinson P..(2013).The impact of biofuel-induced food-price inflation on dietary energy demand and dietary greenhouse gas emissions.Global Environmental Change,23(6).
MLA	Scovronick N.,et al."The impact of biofuel-induced food-price inflation on dietary energy demand and dietary greenhouse gas emissions".Global Environmental Change 23.6(2013).