Soil sealing in Germany continues to increase. According to the Federal Environment Agency, 5,594 square kilometres have been newly sealed over the last 30 years through development, concrete, asphalt or other paving — an area more than twice the size of Saarland.
However, particularly against the backdrop of extreme weather events occurring with increasing frequency as a result of climate change, greater land de-sealing is the order of the day. This is because de-sealed areas offer major advantages: during heavy rainfall, the soil can absorb and store water like a sponge, which then mitigates the effects of drought during dry periods. Green spaces cool the environment through evaporation, sequester CO₂, improve the microclimate, create habitats for plants and animals, and enhance the quality of life and living conditions for the population, particularly in urban areas.