The Ins and Outs of water use - a review of multi-region input-output analysis and water footprints for regional sustainability analysis and policy
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This paper reviews current knowledge about water footprints (WFs) and the role of input-output techniques. We first provide an overview of the prevailing 'bottom-up', process-based methods and their strengths and limitations. This overview leads to discussion of the benefits of combining process-based water footprints with information from input-output techniques. The central theme and proposition is that environmental multi-region input-output analysis (E-MRIO) has a powerful capacity to establish the geography of embodied water, and to complement process-based approaches to WF by expanding their supply-chain coverage. Combining process and input-output information provides valuable information for a diverse set of water planning and water policy objectives. A comprehensive and systematic outline of potential policy applications of E-MRIO (and process analysis methods) is presented.
Economic Systems Research
Economics not elsewhere classified