Outdoor Green Walls: Multi-perspective Methodology for Assessing Urban Sites Based on Socio-environmental Aspects

Green walls are adopted as technological nature-based solution to improve citizens’ well-being through the naturalization of the built environment. The site selection is critical to the success of outdoor green walls due to their cross-functional application and to the urban grid’s complexity. This process must consider environmental features, social needs, and citizens’ habits, besides the urban context’s morphology. In this framework, the adoption of a multi-perspective approach may deal with the design process of outdoor green walls as complex systems. This contribute presents the definition of a site selection’s methodology for outdoor green walls based on the integration of multi-perspectives, from citizens to academic experts, applied on the case study of Biella municipality (Piedmont Region, Italy). The methodology, here presented as a “work in progress” tool, was interdisciplinary designed combining environmental and socio-cultural drivers for decision-making processes for outdoor green walls’ applications. Preliminary results contribute to amplify and ease the debate between academic and non-academic stakeholders concerning the production of tangible and intangible benefits provided by outdoor green walls.