Area subject to Land use change or Management/Practice change (ha):
Design capacity description:
The water retention capacity of a green roof depends on several factors such as: intensity of a precipitation event, annual precipitation, and amount of precipitation events. Moreover the individual design of the roof (plant composition, soil type and thickness of soil layer) determines the water retention capacity.
Green roofs can be installed up to a slope of less than 45°. Intensive green roofs require an adaptation of the statics of the roof.
Lack of land, increasing sealing and thus in creasing amount of rain water.