Potential of retrofitted urban green infrastructure to reduce runoff - A model implementation with site-specific constraints at neighborhood scale

《Potential of retrofitted urban green infrastructure to reduce runoff - A model implementation with site-specific constraints at neighborhood scale》

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作者: Carlos H. Aparicio Uribe;Ricardo Bonilla Brenes;Jochen Hack

来源: URBAN FORESTRY & URBAN GREENING,Vol.69,Issue1,Article 127499

语言: 英文

关键字: Costa Rica;Green infrastructure;Hydrological modelling;Nature-based solutions;Retrofitting;Urban greenery;Urban runoff

作者单位: Brandenburgische Technische Universität Cottbus-Senftenberg, EuroAquae: Hydroinformatics and Water-Management, Platz der Deutschen Einheit 1, 03046 Cottbus, Germany;Technical University Darmstadt, Institute of Applied Geosciences, Section of Ecological Engineering, Research Group SEE-URBAN-WATER, Schnittspahnstr. 9, 64287 Darmstadt, Germany;Leibniz University Hannover, Institute of Environmental Planning, Herrenhäuser Str. 2, 30419 Hannover, Germany;Polytechnic University of Catalonia, Department of Civil and Environmental Engineering, C. Jordi Girona 1-3, 08034 Barcelona, Spain;Brandenburgische Technische Universität Cottbus-Senftenberg, EuroAquae: Hydroinformatics and Water-Management, Platz der Deutschen Einheit 1, 03046 Cottbus, Germany;Technical University Darmstadt, Institute of Applied Geosciences, Section of Ecological Engineering, Research Group SEE-URBAN-WATER, Schnittspahnstr. 9, 64287 Darmstadt, Germany;Leibniz University Hannover, Institute of Environmental Planning, Herrenhäuser Str. 2, 30419 Hannover, Germany;Polytechnic University of Catalonia, Department of Civil and Environmental Engineering, C. Jordi Girona 1-3, 08034 Barcelona, Spain

摘要: The urbanization has resulted in significant changes in the water balance. Urban Green Infrastructures (UGI) have become a promising method for reducing reoccurring floods whilst providing additional social and ecological benefits. However, there are several challenges to successfully implementing UGI in already developed areas, such as accounting for retrofitting UGI scenarios and pre-existing use of spaces. Accurate estimations of the potential of UGI in reducing flood-causing at the watershed scale are therefore important. This study investigates the influence of site-specific constraints on the effectiveness of UGI in reducing flood-causing runoff at the watershed scale. In particular, this study takes urban fabric characteristics in the development of UGI implementation strategies for different types of residential and industrial neighborhoods into account. Furthermore, it applies a hydrological simulation-based approach to estimate the runoff reduction potential of these strategies for a case study in the Metropolitan Area of San José, Costa Rica. The results indicate that UGI implementation potential depends on urban fabric characteristics and modelling different UGI implementation scenarios shows differing hydrological performance. In residential areas, either permeable pavement or infiltration trenches and street planters lead to the highest runoff reduction. In industrial areas, only permeable pavements lead to the highest runoff reduction. Overall, industrial areas enable more potential for UGI and reduce runoff generation. The findings of this study can guide the development of retrofitting UGI scenarios and upscaling strategies under heterogeneous settlement characteristics.