ADAPTATION OF GARDENING TO THE NEWS URBAN CHALLENGES: Green roofs as part of the future sustainable city

More than half of the world’s population is currently living in urban areas, a figure that is expected to increase over the coming years. Urbanisation have had large effects on the physical environment with increasing temperatures, reduced air quality and increased stormwater amplitudes but also in the human experienced environment. Some of these negative effects of urbanisation can be mitigated by increasing the amount of urban vegetation. Currently, there is a drive towards creating more dense urban areas to reduce the need for transport and in the long run the carbon footprint. This has put increased pressure on non formalised green areas but also on current greenspace. Green roofs can be one way to include vegetated areas and vegetation function in dense urban areas by utilising otherwise unused roof surface