气候变化领域集成服务门户(CCPortal): Greater transportation energy and GHG offsets from bioelectricity than ethanol

CCPortal

DOI	10.1126/science.1168885
	Greater transportation energy and GHG offsets from bioelectricity than ethanol
	Campbell J.E.; Lobell D.B.; Field C.B.
发表日期	2009
ISSN	0036-8075
起始页码	1055
结束页码	1057
卷号	324 期号:5930
英文摘要	The quantity of land available to grow biofuel crops without affecting food prices or greenhouse gas (GHG) emissions from land conversion is limited. Therefore, bioenergy should maximize land-use efficiency when addressing transportation and climate change goals. Biomass could power either internal combustion or electric vehicles, but the relative land-use efficiency of these two energy pathways is not well quantified. Here, we show that bioelectricity outperforms ethanol across a range of feedstocks, conversion technologies, and vehicle classes. Bioelectricity produces an average of 81% more transportation kilometers and 108% more emissions offsets per unit area of cropland than does cellulosic ethanol. These results suggest that alternative bioenergy pathways have large differences in how efficiently they use the available land to achieve transportation and climate goals.
英文关键词	alcohol; bioenergetics; biofuel; cellulose; ethanol; greenhouse effect; greenhouse gas; article; bioenergy; biomass; climate change; cropland; energy transfer; exhaust gas; greenhouse gas; land use; priority journal; Agriculture; Air Pollutants; Automobile Driving; Bioelectric Energy Sources; Biomass; Energy-Generating Resources; Ethanol; Greenhouse Effect; Motor Vehicles; Zea mays
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243222
作者单位	College of Engineering, University of California, Merced, CA 95344, United States; Sierra Nevada Research Institute, University of California, Merced, CA 95344, United States; Program on Food Security and the Environment, Stanford University, Stanford, CA 94305, United States; Department of Global Ecology, Carnegie Institution of Washington, Stanford, CA 94305, United States
推荐引用方式 GB/T 7714	Campbell J.E.,Lobell D.B.,Field C.B.. Greater transportation energy and GHG offsets from bioelectricity than ethanol[J],2009,324(5930).
APA	Campbell J.E.,Lobell D.B.,&Field C.B..(2009).Greater transportation energy and GHG offsets from bioelectricity than ethanol.Science,324(5930).
MLA	Campbell J.E.,et al."Greater transportation energy and GHG offsets from bioelectricity than ethanol".Science 324.5930(2009).