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Template-Type: ReDIF-Paper 1.0 Author-Name: Aleix Altimiras-Martin Author-Name-First: Aleix Author-Name-Last: Altimiras-Martin Author-Email: Author-Workplace-Name: Cambridge Centre for Climate Change Mitigation Research, Department of Land Economy, University of Cambridge Author-Workplace-Name: NEREUS, Faculty of Economics and Administration, University of Sao Paulo Title: Basic analytical tool-kit for input-output tables with multiple related outputs: Applications to physical input-output tables with disposals to nature Abstract: Physical Input-Output Tables (PIOTs) are a powerful accounting framework since they trace simultaneously all physical flows of the economy, including goods and emission. However, there is no IO model able to operate them and, thus, they cannot be used for analytical purposes - only descriptive. A series of papers suggested different methods to operate them but without clearly identifying a IO model matching the specificities of PIOTs (Hubacek and Giljum 2003; Giljum and Hubacek 2004; Suh 2004; Giljum, Hubacek, and Sun 2004; Dietzenbacher 2005; Dietzenbacher et al. 2009; Xu and Zhang 2009). This paper aims to develop an output-driven and an input-driven IO model to operate PIOTs, which would constitute the basic analytical tool-kit to analyse such tables. First, section 2 compares the operation of the traditional Input-Output Tables (IOTs) with PIOTs. It identifies a new type of table - a multiple related outputs IOT - that matches the specificities of a PIOT: it has several outputs (goods and emissions) and one of the outputs - the emissions - is related to the total sectoral throughput by the technology of production. Then, it is shown that the related output causes traditional output-driven IO models such as the Leontief one to underestimate the total outputs. Then, section 3 devises a new IO model by assuming a linear relationship between the related outputs (emissions) and the total throughput (total output or input); consequently, the related outputs such as the emissions can be endogenised in the structure of production and, thus, the model can be driven with final goods alone. Section 3.2 generalises the model for any number of multiple related outputs and shows how to operate a PIOT with five types of simultaneous emissions. Then, section 3.3 shows that Suh's (2004) method is in fact a change of total output units that transforms the PIOT - a multiple related outputs IOT - into a single output IOT that can then be operated with traditional IO models. For completeness, section 4 examines the use of input-driven models with multiple related output tables and finds that no special modification of the input-driven model is required. Thus, this paper provides the theoretical background to analyse PIOTs and any other multiple related outputs IOTs. It is expected that this new model will revive the momentum in PIOT development and analysis which had been lost because of the lack of robust analytical tools. Length: 24 pages Creation-Date: 2012-12 #Revision-Date: 1998-01 ## If you want to make aware where this paper is published use this field. It needs to start with Published in or with Forthcoming in. #Publication-Status: Published in Review of Economics, March 1999, pages 1-23 File-URL: File-Format: Application/pdf File-Function: First version, 2012 #File-URL: #File-Format: Application/pdf #File-Function: Revised version, 1998 Number: 001 Classification-JEL: Q57, Q53, C67 Keywords: Physical input-output tables, Input-output analysis, Environmental Accounts, Waste, Emission, Material Flow Analysis, EW-MFA Handle: RePEc:ccc:wpaper:001
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A key area of research at 4CMR over the past 5 years has been the development of the Future Technology Transformation model, used in exploring how policies influence global technology and carbon. This includes an on-line visualisation tool so you can view our results.

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4CMR works closely with the Cambridge Centre for Environment, Energy and Natural Resource Governance, with overlapping interests, skills and projects. C-EENRG is also located in the Department of Land Economy, with a core mission to "conduct integrative research on the governance of environmental transitions, understood as social and technological processes driven by environmental constraints that lead to fundamental changes in social organisation."

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