A Novel Geo-Based Ranking Method for Selection of the Most Suitable NBSs

Abstract There are many types of Nature-Based Solutions (NBS), such as intensive/extensive green roofs, green walls, retention ponds, Bioretention cells, treatment wetlands, river restoration, urban parks, and infiltration trenches. Each could contribute to one or more sustainable development goals as some can improve the ecosystem, some improve water resources, or mitigate urban flooding. Implementing the most suitable NBS in each area needs multidisciplinary perspective analysis by considering circular economy principles and the available resources that exhibit the importance of ranking the possible NBS that could be geo-based. Therefore, the main purpose of this study is to develop a novel ranking method for selecting the best NBSs in each area, which depends on plenty of geo-based variables such as climate type, water resource, economy, environment, Sustainable Development Goals (SDGs) and so forth. The developed dynamic geo-based ranking method has been validated through case-based assessment in different regions, confirming the proposed method’s effectiveness. In conclusion, the developed method could rank the selected NBS in each location, and according to geo-based information, it could show the implementation of the most suitable NBS, thus improving their role in the circular city.