气候变化领域集成服务门户(CCPortal): Environmental outcomes of the US Renewable Fuel Standard

CCPortal

DOI	10.1073/pnas.2101084119
	Environmental outcomes of the US Renewable Fuel Standard
	Lark, Tyler J.; Hendricks, Nathan P.; Smith, Aaron; Pates, Nicholas; Spawn-Lee, Seth A.; Bougie, Matthew; Booth, Eric G.; Kucharik, Christopher J.; Gibbs, Holly K.
发表日期	2022
ISSN	0027-8424
EISSN	1091-6490
卷号	119 期号:9
英文摘要	The Renewable Fuel Standard (RFS) specifies the use of biofuels in the United States and thereby guides nearly half of all global biofuel production, yet outcomes of this keystone climate and environmental regulation remain unclear. Here we combine econometric analyses, land use observations, and biophysical models to estimate the realized effects of the RFS in aggregate and down to the scale of individual agricultural fields across the United States. We find that the RFS increased corn prices by 30% and the prices of other crops by 20%, which, in turn, expanded US corn cultivation by 2.8 Mha (8.7%) and total cropland by 2.1 Mha (2.4%) in the years following policy enactment (2008 to 2016). These changes increased annual nationwide fertilizer use by 3 to 8%, increased water quality degradants by 3 to 5%, and caused enough domestic land use change emissions such that the carbon intensity of corn ethanol produced under the RFS is no less than gasoline and likely at least 24% higher. These tradeoffs must be weighed alongside the benefits of biofuels as decision-makers consider the future of renewable energy policies and the potential for fuels like corn ethanol to meet climate mitigation goals.
英文关键词	biofuels; land use change; greenhouse gas emissions; water quality; environmental policy
语种	英语
WOS研究方向	Multidisciplinary Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED) ; Social Science Citation Index (SSCI)
WOS记录号	WOS:000766704900007
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280484
作者单位	University of Wisconsin System; University of Wisconsin Madison; United States Department of Energy (DOE); University of Wisconsin System; University of Wisconsin Madison; Kansas State University; University of California System; University of California Davis; University of Kentucky; University of Wisconsin System; University of Wisconsin Madison; University of Wisconsin System; University of Wisconsin Madison; University of Wisconsin System; University of Wisconsin Madison
推荐引用方式 GB/T 7714	Lark, Tyler J.,Hendricks, Nathan P.,Smith, Aaron,et al. Environmental outcomes of the US Renewable Fuel Standard[J],2022,119(9).
APA	Lark, Tyler J..,Hendricks, Nathan P..,Smith, Aaron.,Pates, Nicholas.,Spawn-Lee, Seth A..,...&Gibbs, Holly K..(2022).Environmental outcomes of the US Renewable Fuel Standard.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,119(9).
MLA	Lark, Tyler J.,et al."Environmental outcomes of the US Renewable Fuel Standard".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 119.9(2022).