Smart City Governance in the Geo-resources Planning Paradigm in the Metropolitan City of Cagliari (Italy)

The purpose of this paper is to identify environmental issues related to the geo-resources demand, which arises by the new context of the metropolitan city of Cagliari, in the framework of the existing environmental and place-based policies. This is achieved through the correlation of the main planning tools (the Regional Plan of Extractive Activities [RPEA] for geo-resources planning sector, and the urban masterplan [UMP] for urban planning sector), in order to identify environmental indicators, useful for monitoring and for decision support systems. This comparison defined a new integrated methodological approach between urban, place-based and environmental policies, referring to geo-resources planning, in line with the newest paradigm of smart region and of the panarchy process. This approach allowed to evaluate the delayed impacts of UMPs, and its environmental impacts, resulting from the quarry activities of geo-resources (such as natural aggregates). In fact, quarry activity is the leading effect in UMPs (because the materials of construction are obtained principally by it), and it simultaneously decreases the environmental sustainability, increasing the environmental debt.