The role of green roofs in sustainable development

Abstract

Nowadays, due to this fact that city and urbanity have been increasingly expanded, the destruction process of urban green space is developing with more speed which this process makes numerous problems among which we can refer to increase in level of air pollution, reducing urban landscape, increase in respiratory diseases, etc. The green roofs, the gardens which are built in the houses’ roof instead of the land, nowadays have been replaced with urban green space or parks in most of the advanced and overcrowded cities which are faced with shortage of space because of increased construction and reduced surface of land. In this article, first sustainable development, urban green space and its role in sustainable development have been defined and then the green roof and its types and components have been studied and finally two sample of types of green roof have been compared.