Healthy Cities to Healthy People: a Grid Application to Assess the Potential of Ecosystems Services of Public Urban Green Spaces in Porto, Portugal

Abstract Introduction Contemporary cities face multiple socioenvironmental and health challenges that undermine the efforts to promote healthy environments. The 11th goal – Sustainable cities and communities – of United Nations 2030 Agenda for Sustainable Development states that the presence of nature in cities plays a vital role for its sustainability through public urban green spaces (PUGS) accessible and with quality for all. Objectives This work describes the application of a grid to evaluate the potential of the ecosystems services (ES) of PUGS. Methodology The grid was applied in 25 PUGS in the city of Porto, divided into 5 clusters of socioeconomic and environmental deprivation (SED), ranging from very high to very low), and is composed by 6 sections with 37 domains assessed: i) identification; ii) description of the activities; iii) activities that take place; iv) assessment of the environment quality; v) existence of infrastructure and facilities; and vi) security. Dimensions iii, iv, v and vi are filled in the grid by a dichotomous answer: No = 0; Yes = 1. All data calculation and statistical analyses were performed using IBM® SPSS® Statistics vs.25.0. The grid was applied in January 2019 and each PUGS visit lasted 20-25 minutes. Results The highest total score (33) corresponds to 2 parks located in a low and medium SED clusters. The lowest score (9) corresponds to 2 gardens located in a very high and high SED clusters. The most critical dimension assessed of the PUGS has to do with the activities it offers (Median = 2). On the other hand, the dimension with the highest scores relates to the PUGS environmental quality (Median = 8). Regarding results by SED clusters, it is observed that lowest scores, in all assessed domains, are from PUGS located in high and very high SED clusters. Conclusion This work presents useful information regarding the importance of promoting PUGS with quality and accessible from all, especially to socioeconomic vulnerable groups, which should be the major goal of public policies designers.