Environmental input–output analyses can be a useful decision support tool at the subnational level, because of its ability to capture economic and environmental impacts at other geographical levels. Yet, such analyses are hindered by the lack of subnational IO tables. Furthermore, the lack of physical product and waste flows in what is known as a “hybrid” table prevents a range of consumption-based and circular-economy-type analyses. We demonstrate the development of a multiregional hybrid IOT (MRHIOT) along with environmental extensions at the subnational level and exemplify it for the case of Belgium. The development procedure discloses a novel approach of combining national hybrid tables, subnational monetary tables, and physical survey-based data. Such a combination builds upon a partial-survey approach that includes a range of techniques for initial estimation and reconciliation within a balancing procedure. For the validation of the approaches, we assessed the magnitude of deviations between the initial and final estimates and analyzed the uncertainties inherent to each initial estimation procedure. Subsequently, we conducted a consumption-based analysis where we assessed the carbon footprint (CF) at the subnational level and highlighted the CF inherent to the interregional linkages. This study provides methodological and application-based contributions to the discussion on the relevance of hybrid subnational tables and analyses compared to national ones. The proposed approach could be replicable to some extent for further developing subnational MRHIOT. The study is expected to foster more research toward the development of further subnational MRHIOT as well as its associated wide-ranging applications.

中文翻译：

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在多区域框架中制定地方混合投入产出表

环境投入产出分析可以成为地方层面的有用决策支持工具，因为它能够捕捉其他地理层面的经济和环境影响。然而，此类分析因缺乏地方 IO 表而受到阻碍。此外，所谓的“混合”表中缺乏实物产品和废物流，阻碍了一系列基于消费和循环经济类型的分析。我们展示了多区域混合物联网 (MRHIOT) 的发展以及地方一级的环境扩展，并以比利时为例。开发程序公开了一种结合国家混合表、地方货币表和基于实物调查的数据的新方法。这种组合建立在部分调查方法的基础上，该方法包括一系列用于在平衡程序中进行初始估计和调节的技术。为了验证这些方法，我们评估了初始估计和最终估计之间的偏差幅度，并分析了每个初始估计程序固有的不确定性。随后，我们进行了基于消费的分析，评估了地方层面的碳足迹 (CF)，并强调了区域间联系所固有的 CF。本研究为讨论混合地方表格和分析与国家表格的相关性提供了方法论和基于应用的贡献。拟议的方法在一定程度上可以复制，以进一步发展地方 MRHIOT。