Building evidence regarding nature-based solutions indicators and their implications for policy – the case of air quality (CREAF, Barcelona Regional)

We provide an overview and guidance for air pollution indicators, using three case studies in Europe and Latin America. We discuss the importance of context, specific pollutants and vulnerable groups and suggest new approaches at finer scales. Our findings also point out that knowledge of pollutants uptake in edible plants can give a hint to potential exposure risks for humans.