Ali Arabmazar Yazdi; Aliasghar Banouei; Negar Akbari
Abstract
In the mixed economic and natural resource domain, transactions on commodities, services and natural resources (water and land) are in either visible or invisible (hidden) layers. The prevailing monetary systems of macro and sectoral accounting take into account only market transactions and therefore ...
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In the mixed economic and natural resource domain, transactions on commodities, services and natural resources (water and land) are in either visible or invisible (hidden) layers. The prevailing monetary systems of macro and sectoral accounting take into account only market transactions and therefore neglect invisible transactions like intersectoral water consumption. Such a deficiency provides the ground for policymaking and water resource management to focus their attention on the aggregate data, e.g. agriculture consumes directly more than 90 percent of the total water resources. In this paper, on the basis of the extended Input – Output model, we use two approaches; namely: quantity and mixed quantity–value approaches. By using the aggregated quantity-value based Input – Output table and corresponding sectoral consumption of water (billion liters) for the year 1990, we found that sectoral water consumption multipliers and the intersectoral water consumption provide more suitable criteria for policy implications as well as for managing the consumption of water resources of the country. In addition, the agro-based industries have the largest water consumption multipliers. With respect to the hidden layer of intersectoral water consumption we found that agriculture sector supplies 92.5 percent of the total water resources while demanding 58 percent of these resources.
