Green Areas and Climate Change Adaptation in a Urban Environment: The Case Study of “Le Vallere” Park (Turin, Italy)

Abstract

The balance governing the exploitation of resources on Earth is nowadays undermined by different accelerating processes, as population growth, pollution increase and, above all, climate change: the consequences on human well-being and on natural ecosystems health is incontrovertible. Hence, there is the need to undertake mitigation actions aimed at slowing down the uncontrolled development of negative effects. Within this work, the goal is to analyze the role of urban green infrastructures in the complex panorama of the climate change fight, through the ability to restore ecological functions. A quantification study of the Ecosystem Services (ES) offered by “Le Vallere” Park, a green area of about 340 thousand square meters in the Turin metropolitan area (North Italy), was conducted. The project combines the complex ES theme of urban adaptation to climate change, through i-Tree, a software suite born to evaluate the benefits provided by vegetation. Particularly, through i-Tree Hydro, the quantity and quality of runoff rainwater are analyzed considering the comparison between different scenarios: we analyze a present case (2019) and future cases (2071–2100), with reference to climate projections for Representative Concentration Pathways (RCP) 4.5 scenario (considering climate change mitigation actions) and RCP 8.5 scenario (no actions) of the COSMO-CLM regional climate model, produced by the Euro-Mediterranean Center for Climate Change (CMCC). The discussion focuses on comparing the results obtained in the different scenarios, deepening the role of a medium-sized urban green infrastructure on the surrounding environment as the climate and vegetative conditions vary.

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