Plus de bleu le long de l'infrastructure verte pour améliorer la résistance à la sécheresse dans les villes alpines
More blue along the green infrastructure to improve drought resilience in Alpine cities
- Auteurs
- Yannick Back, Alrun Jasper-Tönnies, Georg Leitinger, Thomas Einfalt, Inga Ferk, Lisa Ambrosi, Fabian Funke, Martina Hauser, Chau Huynh Thi Ngoc, Manfred Kleidorfer
- Résumé court
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- Summary
- Water management in Alpine cities is under huge pressure from climate change including altered temperature and precipitation patterns, which demand adaptation measures such as Blue-Green Infrastructure. A combination of nature-based and technical solutions can help to improve both the water and energy balance, increase the evaporative cooling effect driven by water availability, decrease peak runoff and, thus, reduce urban heat and flood hazards. The interdisciplinary project BlueGreenCities builds upon current research and integrates ecological and technical disciplines to close knowledge gaps regarding (1) land-atmosphere interactions within ecological, hydrological, and meteorological systems and (2) the performance of Blue-Green adaptation measures under different climate scenarios in Alpine urban areas. The project thereby supports scientists as well as city planners, land developers, and political stakeholders in decision-making for sustainable and flexible water management systems that maintain human wellbeing, economic development and the protection of the living environment. First results present the effects of the 2019 European summer drought on vegetation health and evaporative cooling potential, indicating that decreasing water availability diminishes capabilities of urban green spaces to maintain an evaporative cooling effect if not irrigated extensively. This highlights the importance of urban water management to increase cities’ resilience towards prolonged dry periods and water scarcity.
- Mots-clés
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