气候变化领域集成服务门户(CCPortal): Achieving ambitious climate targets: Is it economical for New Zealand to invest in agricultural GHG mitigation?

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DOI	10.1088/1748-9326/ab542a
	Achieving ambitious climate targets: Is it economical for New Zealand to invest in agricultural GHG mitigation?
	Carroll J.L.; Daigneault A.J.
发表日期	2019
ISSN	17489318
卷号	14 期号:12
英文摘要	Reducing agricultural greenhouse gas (GHG) emissions, which contribute approximately 24% of global emissions, is important to efficiently achieve the goals of the Paris Agreement; however, most mitigation options have focused on industrialized, not pastoral farming practices. New Zealand (NZ) has ambitious GHG reduction targets, but biogenic emissions from the agricultural sector are nearly half of total annual emissions and hence must be an integral part of the solution. We use a national-level economic land use model to estimate the benefits and costs of implementing land-based GHG emissions reduction practices that are currently available and/or under development. Results indicate the cost and effectiveness of modeled practices are highly variable, with individual practices capable of reducing gross GHGs by 2% to 62%. Methane inhibitors are estimated to be highly effective but costly, while targeted urine patch treatments are cheap but less effective. Afforestation and methane vaccines cost less than $50/tCO2e and could reduce NZ's GHG emissions by at least 20%. Using a mix of current and emerging mitigation practices to achieve reduction targets ranging from 10% to 50% could cost an average of $14 to $76/tCO2e, potentially much less than estimates for achieving similar targets from NZ's energy and transportation sectors. Sensitivity analysis indicates that commercialization of an effective methane vaccine at a cost that is typical of other livestock vaccines is critical to achieving a 50% gross emissions reduction target. Without it, a large portion of land could be left fallow. The practices and technologies evaluated in this paper are not unique to New Zealand and could be adopted globally, thereby helping other nations achieve their climate mitigation goals more cost-effectively. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Biological emissions; Climate policy; Livestock; Mitigation cost; Technological change
语种	英语
scopus关键词	Climate change; Cost estimating; Cost reduction; Emission control; Gas emissions; Greenhouse gases; Land use; Methane; Reforestation; Sensitivity analysis; Vaccines; Biological emission; Climate policy; Livestock; Mitigation costs; Technological change; Cost benefit analysis; commercialization; environmental policy; greenhouse gas; land use change; livestock; methane; transportation; vaccine; New Zealand
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154254
作者单位	Ecology and Environmental Sciences Program, University of Maine, Orono, ME, United States; School of Forest Resources, University of Maine, Orono, ME, United States
推荐引用方式 GB/T 7714	Carroll J.L.,Daigneault A.J.. Achieving ambitious climate targets: Is it economical for New Zealand to invest in agricultural GHG mitigation?[J],2019,14(12).
APA	Carroll J.L.,&Daigneault A.J..(2019).Achieving ambitious climate targets: Is it economical for New Zealand to invest in agricultural GHG mitigation?.Environmental Research Letters,14(12).
MLA	Carroll J.L.,et al."Achieving ambitious climate targets: Is it economical for New Zealand to invest in agricultural GHG mitigation?".Environmental Research Letters 14.12(2019).