1158 | 775 | Green spaces indicators for walkable cities. Assessment of equity in the access to three different typologies of green spaces in a myriad of Chilean cities | Francisco de la Barrera, Sonia Reyes-Paecke, Ricardo Truffello, Helen de la Fuente, Valentina Salinas, Rodrigo Villegas, Stefan Steiniger
The target 11.7 of UNs sustainable development goals aims to “provide universal access to safe, inclusive and accessible, green and public spaces, particularly for women and children, older persons and persons with disabilities”. Such access should mostly be performed by walking; however, the methodological approaches are usually weak to describe typologies of facilities reachable within 15-minute distances. In addition, measuring the provision of the facilities (in this case green spaces) that compose the urban environment, as well as its accessibility, can represent a major objective, plenty of assumptions, for example, that the higher the provision of facilities or services, the higher the accessibility to them. In pursuit of the social benefits provided by green spaces, we calculated these two indicators and analyzed three size-based types of green spaces: residential green spaces (500 sq to 5000 sq.m.), local parks (0.5 to 2.0 ha), and urban parks (2 to 10 ha). We considered two walking speeds to ensure the inclusion of people that could be under-represented in standard calculations of indicators. We studied all the green spaces (n=1,888) of 69 municipalities, which are part of the 16 regional capital cities of Chile, covering a large latitudinal gradient. Regarding the accessibility indicator, when a walking speed of 4 km/h is considered, the smaller residential green spaces have the highest accessibility (65 % of the population have access), but accessibility for larger GS is low (19% and 14%). When a walking speed of 2 km/h is assumed, then accessibility drops to 29 %, 5 %, and 5 % respectively. The provision indicator showed similar results, with an average provision of 5.29 sq.m/inhab. We found that calculation results for the three types of UGS are statistically different, and therefore one type cannot replace another in case of monitoring: Higher UGS provision does not guarantee higher accessibility.
Francisco de la Barrera, Sonia Reyes-Paecke, Ricardo Truffello, Helen de la Fuente, Valentina Salinas, Rodrigo Villegas, Stefan Steiniger
Universidad de Concepción (Chile)
ID Abstract: 775