Where neighbourhoods reach 30% tree canopy

Percentage of each city's population living in a neighbourhood with at least 30% tree canopy cover.

Chart: El ConfidencialSource: Bertassello, L.E., Velde, M., Maes, J. et al. Assessing European cities with the 3-30-300 rule underscores the need for enhanced urban greening efforts. Nat Commun (2026)Created with Datawrapper