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Endogenizing Capital in MRIO Models: The Implications for Consumption-Based Accounting

机译：MRIO模型中的内生资本：对基于消费的会计的启示

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摘要

Nearly 30% of global greenhouse gas emissions are associated with the production of capital goods. Consumption-based emission calculations based on multiregional input output (MRIO) models allocate emissions occurring in the production of intermediate goods to the final goods produced in an economy. Like intermediate goods, capital goods are used in production processes; yet the emissions associated with their production are not allocated to the industries using them. As a result, the carbon footprint of final consumption as well as emissions embodied in trade are currently underestimated. Here, we address this problem by endogenizing capital transactions in the EXIOBASE global MRIO database, thereby allocating emissions from capital goods to final consumption. We find that endogenizing capital substantially increases the carbon footprint of final consumption (by up to 57% for some countries), and that the gap between production-based and consumption-based emissions increases for most countries. We also find that the global emissions embodied in trade increase by up to 11%, and that current patterns of bilaterally traded emissions are amplified. Furthermore, endogenizing capital leads to a 3-fold increase in the carbon footprint of certain product categories. The results suggest that our approach constitutes an important improvement to current input output methodology.
机译：全球近30％的温室气体排放与资本产品的生产有关。基于多区域投入产出（MRIO）模型的基于消耗的排放计算将中间产品生产中产生的排放分配给经济体中生产的最终产品。像中间商品一样，资本品也用于生产过程。然而，与其生产相关的排放并未分配给使用它们的行业。结果，目前低估了最终消费的碳足迹以及贸易中体现的排放。在这里，我们通过在EXIOBASE全球MRIO数据库中内生资本交易来解决此问题，从而将资本货物的排放分配给最终消费。我们发现，资本内生化极大地增加了最终消费的碳足迹（在某些国家中高达57％），并且在大多数国家中，基于生产的排放与基于消耗的排放之间的差距越来越大。我们还发现，体现在贸易中的全球排放量增长了11％，并且当前双边贸易排放量的模式被放大了。此外，内生资本会导致某些产品类别的碳足迹增加3倍。结果表明，我们的方法构成了当前输入输出方法的重要改进。

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  • 来源
    《Environmental Science & Technology》 |2018年第22期|13250-13259|共10页
  • 作者

    Sodersten Carl-Johan H.; Wood Richard; Hertwich Edgar G.;

  • 作者单位

    Norwegian Univ Sci & Technol NTNU, Hgsk Ringen 1, NO-7491 Trondheim, Norway;

    Yale Univ, Yale Sch Forestry & Environm Studies, 195 Prospect St, New Haven, CT 06511 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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