Abhatoo - Centre Nationale de Documentation

Air pollution in Mediterranean cities is a growing concern, driven by industrial emissions, traffic, and climate change, which exacerbates pollutant formation. With two-thirds of Mediterranean countries exceeding air quality standards set by the European Union (EU) and World Health Organisation (WHO), this issue poses significant health risks, including respiratory diseases and environmental degradation. Nature-based solutions (NbS), such as green roofs, street trees, and urban green and blue spaces and corridors, offer effective strategies for mitigating air pollution while providing additional benefits like temperature regulation, biodiversity support, and improved public health. This paper summarizes through various Plan Bleu publications and other relevant research, the potential of implementing NbS at various scales, from individual buildings to city-wide initiatives, emphasizing the need for context-specific, integrated approaches. The findings highlight the importance of design, economic considerations, and long-term maintenance in maximizing NbS impacts, ultimately contributing to enhanced urban resilience and sustainability as well as inhabitants wellbeing.