کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10505032 946848 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The impact of biofuel-induced food-price inflation on dietary energy demand and dietary greenhouse gas emissions
ترجمه فارسی عنوان
تاثیر تورم قیمت مواد غذایی ناشی از سوخت زیستی بر تقاضای انرژی در رژیم غذایی و انتشار گازهای گلخانه ای رژیم غذایی
کلمات کلیدی
سوخت های زیستی، قیمت مواد غذایی، گازهای گلخانه ای، تغذیه، تغییر آب و هوا، سلامت عمومی،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Global Environmental Change - Volume 23, Issue 6, December 2013, Pages 1587-1593
نویسندگان
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