Green infrastructure in settlements and cities of the future Two case studies; green roof and treatment wetland

The aim of this paper is to present green infrastructure in the context of climate resilience of settlements and cities of the future by two examples; green roofs and treatment wetlands in order to understand more fully their technical operation and to evaluate their efficiency from the perspective of decrease of heat island intensity and reduction of wastewater pollution. The performance of green infrastructure was evaluated on the basis of systematic literature review as well as with project-field measures. The results showed that the introduction of green roofs in future settlements and cities may results in decreased heat island intensity. The temperature decrease depends on climatic characteristics, amount of vegetation and urban geometry. The promising results regarding treatment wetlands performance will be helpful in preparing guidelines for treatment wetlands with practical information about operational and legislation requirements, and performance efficiency to meet new legislation for settlements below 2000 inhabitants, which will enter in force in 2015.