“…This critical need to enhance urban sustainability is reflected in an increasing number of global, national, and local initiatives [7], such as the Sustainable Development Goals and their fulfillment by the year 2030 to which 193 countries were committed [8] or the Charter of European Cities toward Sustainability, known as the Aalborg Charter, in which the signatory cities would participate in the United Nations' local Agenda 21 initiatives [9]. In Spain, this is the case of the Spanish Strategy for Urban and Local Sustainability (EESUL) [10], the Urban Ecology Agency of Barcelona [11], or the Spanish Network of Cities for Climate [12].…”