What role does urban greening play in adapting to climate change?
The urban heat island phenomenon results from two factors: global warming and the urban sprawl of cities, which lack sufficient green spaces. Today, urban planning projects in France face a variety of challenges.
Thermal Considerations
Mineral surfaces (building walls, asphalt, concrete, etc.) absorb heat during the day and release it at night, creating heat islands. Vegetation helps lower temperatures in these areas by:
- shading, which reduces direct sunlight on surfaces;
- evapotranspiration, which naturally cools the surrounding air.
Studies show that the perceived temperature is 3 to 5°C lower in the immediate vicinity of vegetation in urban areas.