Green roofs have been shown to provide habitat for birds and butterflies, with cities like Zürich and Basel leading the way in showcasing the benefits of green rooftop ecosystems. Basel has even made green roofs mandatory on new or renovated buildings, resulting in a significant increase in green roof coverage. Despite economic factors and planning inertia posing barriers to widespread adoption, the ecological benefits of green roofs are clear, with potential for long-term environmental and climate benefits. Architect and city planner Brenneisen advocates for the positive impact of green roofs on a building's ecological footprint and encourages more creativity in their design to maximize ecological relevance.
https://reasonstobecheerful.world/zurich-turned-rooftops-into-climate-shield/