气候变化领域集成服务门户(CCPortal): Taxonomy of uncertainty in environmental life cycle assessment of infrastructure projects

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DOI	10.1088/1748-9326/ab85f8
	Taxonomy of uncertainty in environmental life cycle assessment of infrastructure projects
	Saxe S.; Guven G.; Pereira L.; Arrigoni A.; Opher T.; Roy A.; Arceo A.; Von Raesfeld S.S.; Duhamel M.; Mccabe B.; Panesar D.K.; Maclean H.L.; Posen I.D.
发表日期	2020
ISSN	17489318
卷号	15 期号:8
英文摘要	Environmental life cycle assessment (LCA) is increasingly being used to evaluate infrastructure products and to inform their funding, design and construction. As such, recognition of study limitations and consideration of uncertainty are needed; however, most infrastructure LCAs still report deterministic values. Compared to other LCA subfields, infrastructure LCA has developed relatively recently and lags in adopting uncertainty analysis. This paper presents four broad categories of infrastructure LCA uncertainty. These contain 11 drivers focusing on differences between infrastructure and manufactured products. Identified categories and drivers are: application of ISO 14040/14044 standards (functional unit, reference flow, boundaries of analysis); spatiotemporal realities underlying physical construction (geography, local context, manufacturing time); nature of the construction industry (repetition of production, scale, and division of responsibilities); and characteristics of infrastructure projects (agglomeration of other products, and recurring embodied energy). Infrastructure products are typically large, one-off projects with no two being exactly alike in terms of form, function, temporal or spatial context. As a result, strong variability between products is the norm and much of the uncertainty is irreducible. Given the inability to make significant changes to an infrastructure project ex-post and the unique nature of infrastructure, ex-ante analysis is of particular importance. This paper articulates the key drivers of infrastructure specific LCA uncertainty laying the foundation for future refinement of uncertainty consideration for infrastructure. As LCA becomes an increasingly influential tool in decision making for infrastructure, uncertainty analysis must be standard practice, or we risk undermining the fundamental goal of reduced real-world negative environmental impacts. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	infrastructure; life cycle assessment; uncertainty
语种	英语
scopus关键词	Construction industry; Decision making; Environmental impact; Manufacture; Product design; Risk assessment; Uncertainty analysis; Design and construction; Environmental life cycle assessment; Functional units; Infrastructure products; Infrastructure project; Manufactured products; Manufacturing time; Standard practices; Life cycle; construction industry; decision making; design method; environmental impact assessment; foundation; infrastructural development; infrastructure planning; life cycle analysis; uncertainty analysis
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/153882
作者单位	Department of Civil and Mineral Engineering, University of Toronto, Toronto, M5S 1A4, Canada
推荐引用方式 GB/T 7714	Saxe S.,Guven G.,Pereira L.,et al. Taxonomy of uncertainty in environmental life cycle assessment of infrastructure projects[J],2020,15(8).
APA	Saxe S..,Guven G..,Pereira L..,Arrigoni A..,Opher T..,...&Posen I.D..(2020).Taxonomy of uncertainty in environmental life cycle assessment of infrastructure projects.Environmental Research Letters,15(8).
MLA	Saxe S.,et al."Taxonomy of uncertainty in environmental life cycle assessment of infrastructure projects".Environmental Research Letters 15.8(2020).