Model research on the influence of green roofs on environmental parameters in urban agglomerations

Abstract

Abstract. This study presents features of green roofs in urban areas with a particular emphasis on the filtration of air pollutants, heavy metals removal, reduction of rainwater runoff from roof surfaces and thermal insulation. To carry out field studies on the influence of green roofs on the environment in urban areas, two green roof models on a laboratory scale were used. The observations of the prepared green roof models made during the summer, autumn and winter confirmed the extremely beneficial effect of this type of roof for the elimination of air pollutant, heavy metals, and particulate matter. The observations also confirmed that plants on a green roof growing on a soil layer absorb an average of 74% of rain water and then allow it to evaporate. The selection of plants for green roofs should mainly focus on how effectively they improve urban environmental parameters and remove air pollutants. The results of the study of the two green roof models on a laboratory scale are necessary to work out the parameters of layers of the roof and select the most appropriate plants for the reference research object on the roof of one of buildings of the University of Opole.

The Impact of Green Roofs on the Parameters of the Environment in Urban Areas—Review

“…The soil substrate layers composition in the laboratory model were made according to the author's own idea. In future studies, which will be carried out on the reference research facility, the soil substrate layer is to be made according to the recommendations of the German Landscape Research, Development and Construction Society (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau-FLL) and DAFA (Association of Flat Rooftops and Façades Contractors) [74,97] with certain adjustments to accommodate the specificity of the climate of the tested region. studies, which will be carried out on the reference research facility, the soil substrate layer is to be made according to the recommendations of the German Landscape Research, Development and Construction Society (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau-FLL) and DAFA (Association of Flat Rooftops and Façades Contractors) [97,74] with certain adjustments to accommodate the specificity of the climate of the tested region.…”

“…In future studies, which will be carried out on the reference research facility, the soil substrate layer is to be made according to the recommendations of the German Landscape Research, Development and Construction Society (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau-FLL) and DAFA (Association of Flat Rooftops and Façades Contractors) [74,97] with certain adjustments to accommodate the specificity of the climate of the tested region. studies, which will be carried out on the reference research facility, the soil substrate layer is to be made according to the recommendations of the German Landscape Research, Development and Construction Society (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau-FLL) and DAFA (Association of Flat Rooftops and Façades Contractors) [97,74] with certain adjustments to accommodate the specificity of the climate of the tested region. Based on the results of research on green roofs carried out by different researchers [29,50,51,63,92,94,[97][98][99][100], a methodology for testing green roofs on a laboratory scale (in the climatic conditions of Central and Eastern Europe) has been developed; a decision was also made to build three other research models of varying structures, and various substrate layers in particular.…”

“…Green roofs can be a way of reducing air pollution [71][72][73]. For Central and Eastern Europe, it is precisely the reduction of air pollution in urban areas owing to the impact of green roofs that is one of the most important functions of this type of roofing solution [74]. As the analysis shows, only 5% of the publications concerned this aspect of the impact of green roofs on air quality in city centers.…”

The green roofs for reduction in the load on rainwater drainage in highly urbanised areas

“…The next layer was thermal insulation made of polystyrene (in model 1-a layer of 8 cm thick extruded-XPS, and in model 2-a layer of 10 cm thick expanded-EPS). A drainage layer for each model was made: for model 1, in the form of drainage pipe, and for model 2, in the form of a 2-cm layer of gravel fraction of 1-1.5 cm (allowing excess rainwater to go to the vertical discharge pipe) (Suszanowicz 2018). For the extensive model, a layer of soil of 15 cm was used, and a layer of 35 cm was used for the intensive roof (Suszanowicz and Kolasa-Więcek 2019).…”

Efecto térmico de las azoteas verdes en la Ciudad de México, Yucatán y Coahuila

“…sustituyen las superficies convencionales de las azoteas por plantas, creando un entorno natural con beneficios, especialmente a nivel energético. 3 Algunos beneficios de las cubiertas verdes son: aumento de la superficie forestal urbana, 4 purificación del aire, 5 reducción del efecto isla urbana de calor, 6 preservación de la biodiversidad, 7 reducción de la escorrentía 8 y ahorro energético en la edificación por climatización. 6,9,10 Las azoteas verdes pueden desempeñar un papel importante en el aumento de los espacios verdes en zonas urbanas densamente pobladas.…”