干旱区生态环境知识资源中心(Arid): Net greenhouse-gas emissions and reduction opportunities in the Western Australian beef industry

Arid

DOI	10.1071/AN23111
	Net greenhouse-gas emissions and reduction opportunities in the Western Australian beef industry
	Wiedemann, Stephen; Longworth, Emma; O'Shannessy, Riley
通讯作者	Wiedemann, S
来源期刊	ANIMAL PRODUCTION SCIENCE
ISSN	1836-0939
EISSN	1836-5787
出版年	2024
卷号	64 期号:1
英文摘要	ContextThe Western Australian (WA) Government has set ambitious emission reduction targets and is developing strategies to reduce emissions across the state economy, including agriculture.AimsThis study determined the product carbon footprint (CF) and total emissions of the WA beef industry, to establish a baseline for emission reduction planning.MethodsA cradle-to-gate attributional life-cycle assessment with a reconciled livestock inventory of herd numbers and turnoff, was used. Emission reduction strategies were examined and included herd management, enteric-methane mitigation, and removals via carbon sequestration in vegetation and soils.Key resultsModelled livestock numbers were found to be 36% higher than reported in the Australian Bureau of Statistics (ABS), resulting in an emission profile of 4.7 million tonnes (Mt) of carbon dioxide equivalent (CO2-e) (excluding land use (LU) and direct LU change (dLUC)). This profile was 26% higher than emissions reported in state inventories. LU and dLUC were estimated to be a greenhouse-gas removal of -2.6 Mt CO2-e, although with high uncertainty. The mean CF for WA was 15.3 kg CO2-e per kg liveweight (LW) (excluding LU and dLUC). State-wide removals from LU and dLUC were estimated to be -8.5 kg CO2-e/kg LW. The CF was 11.7, 19.2 and 18.2 kg CO2-e/kg LW for the Agricultural, Kimberley and Arid regions respectively. The implementation of herd-management strategies and anti-methanogenic supplements resulted in a maximum 25% reduction.ConclusionsHerd productivity and market specifications were key drivers of regional differences in CF. Opportunities exist to reduce the CF in northern herds through diverting cattle to Australian backgrounding and feedlot supply chains to reach slaughter weight at a younger age. Adoption of anti-methanogenic feed supplements were important; however, achieving major reductions in the next decade will rely on removals via carbon sequestration in soil and vegetation.ImplicationsConsidering the magnitude of removals and elevated uncertainty in this result, further research and new datasets are needed to refine this analysis. New datasets are required to accurately report livestock numbers and track and reduce future GHG emissions from this higher baseline. Technical, cost and adoption barriers will need to be addressed by developing actionable pathways to achieve emission reduction in the mid- to long term. It is imperative for agriculture to move towards low-emission production systems. This study provided a baseline for the Western Australian beef industry and examined emission reduction pathways. The study reported an emission intensity of 15.3 kg CO2-e/kg LW and removals associated with land use and direct land-use change of -8.5/kg CO2-e kg LW. Residual emissions will need to be balanced through removals via sequestration of carbon in soil and vegetation and accelerated adoption of anti-methanogenic supplements.
英文关键词	beef cattle carbon footprint climate change emission reduction strategies greenhouse gas herd inventory lifecycle assessment red meat sustainable agriculture Western Australia
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001136589000022
WOS关键词	ENTERIC METHANE MITIGATION ; NORTHERN AUSTRALIA ; FEEDLOT CATTLE ; RESOURCE USE ; PATHWAYS
WOS类目	Agriculture, Dairy & Animal Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402823
推荐引用方式 GB/T 7714	Wiedemann, Stephen,Longworth, Emma,O'Shannessy, Riley. Net greenhouse-gas emissions and reduction opportunities in the Western Australian beef industry[J],2024,64(1).
APA	Wiedemann, Stephen,Longworth, Emma,&O'Shannessy, Riley.(2024).Net greenhouse-gas emissions and reduction opportunities in the Western Australian beef industry.ANIMAL PRODUCTION SCIENCE,64(1).
MLA	Wiedemann, Stephen,et al."Net greenhouse-gas emissions and reduction opportunities in the Western Australian beef industry".ANIMAL PRODUCTION SCIENCE 64.1(2024).