气候变化领域集成服务门户(CCPortal): Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5°C target by 2030 but not 2050

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DOI	10.1073/pnas.2111294119
	Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5°C target by 2030 but not 2050
	Arndt, Claudia; Hristov, Alexander N.; Price, William J.; McClelland, Shelby C.; Pelaez, Amalia M.; Cueva, Sergio F.; Oh, Joonpyo; Dijkstra, Jan; Bannink, Andre; Bayat, Ali R.; Crompton, Les A.; Eugene, Maguy A.; Enahoro, Dolapo; Kebreab, Ermias; Kreuzer, Michael; McGee, Mark; Martin, Cecile; Newbold, Charles J.; Reynolds, Christopher K.; Schwarm, Angela; Shingfield, Kevin J.; Veneman, Jolien B.; Yanez-Ruiz, David R.; Yu, Zhongtang
发表日期	2022
ISSN	0027-8424
EISSN	1091-6490
卷号	119 期号:20
英文摘要	To meet the 1.5 degrees C target, methane (CH4) from ruminants must be reduced by 11 to 30% by 2030 and 24 to 47% by 2050 compared to 2010 levels. A meta-analysis identified strategies to decrease product-based (PB; CH4 per unit meat or milk) and absolute (ABS) enteric CH4 emissions while maintaining or increasing animal productivity (AP; weight gain or milk yield). Next, the potential of different adoption rates of one PB or one ABS strategy to contribute to the 1.5 degrees C target was estimated. The database included findings from 430 peer-reviewed studies, which reported 98 mitigation strategies that can be classified into three categories: animal and feed management, diet formulation, and rumen manipulation. A random-effects meta-analysis weighted by inverse variance was carried out. Three PB strategies-namely, increasing feeding level, decreasing grass maturity, and decreasing dietary forage-to-concentrate ratio-decreased CH4 per unit meat or milk by on average 12% and increased AP by a median of 17%. Five ABS strategies-namely CH4 inhibitors, tanniferous forages, electron sinks, oils and fats, and oilseeds-decreased daily methane by on average 21%. Globally, only 100% adoption of the most effective PB and ABS strategies can meet the 1.5 degrees C target by 2030 but not 2050, because mitigation effects are offset by projected increases in CH 4 due to increasing milk and meat demand. Notably, by 2030 and 2050, low- and middle-income countries may not meet their contribution to the 1.5 degrees C target for this same reason, whereas high-income countries could meet their contributions due to only a minor projected increase in enteric CH4 emissions.
英文关键词	methane; meta-analysis; ruminant; enteric; mitigation
语种	英语
WOS研究方向	Multidisciplinary Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000841330100003
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/281086
作者单位	CGIAR; International Livestock Research Institute (ILRI); Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Idaho; University of Idaho; Colorado State University; Wageningen University & Research; Animal Sciences Group of Wageningen UR; Natural Resources Institute Finland (Luke); University of Reading; INRAE; VetAgro Sup; Universite Clermont Auvergne (UCA); University of California System; University of California Davis; Swiss Federal Institutes of Technology Domain; ETH Zurich; Teagasc; Scotland's Rural College; Norwegian University of Life Sciences; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Estacion Experimental del Zaidin (EEZ); University System of Ohio; Ohio State University
推荐引用方式 GB/T 7714	Arndt, Claudia,Hristov, Alexander N.,Price, William J.,et al. Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5°C target by 2030 but not 2050[J],2022,119(20).
APA	Arndt, Claudia.,Hristov, Alexander N..,Price, William J..,McClelland, Shelby C..,Pelaez, Amalia M..,...&Yu, Zhongtang.(2022).Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5°C target by 2030 but not 2050.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,119(20).
MLA	Arndt, Claudia,et al."Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5°C target by 2030 but not 2050".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 119.20(2022).