State of the art of hydrological behavior of green roofs in brazil: a systematic review

• Autor(a) principal: Bär, Bruna Vogt
• Data de Publicação: 2017
• Outros Autores: Tavares, Sergio Fernando
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: PARC (Campinas)
• Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8650106
• topic: Escoamento. Retenção pluvial. Coberturas verdes. Qualidade das águas.; Runoff. Rain retention. Green roofs. Water quality.

This systematic literature review addresses the quantitative and qualitative behavior of the waters drained by green roofs, aiming to raise the state of the art of this area of study to a Brazilian scenario. To do this, we chose to select the significant quantity and variety of materials available, within the eligibility criteria. Searches in the databases of Thesis and Dissertation of CAPES, Google Academic, and SciELO, together with the addition of gray literature, resulted in 40 selected references. From these, it is observed that the diversity of approaches, and the difference between the components of the green roofs used by the authors, makes it difficult to compare and group the results obtained. However, several works related to rainwater retention capacity have accordant conclusions, such as the influence of slope, humidity, the period of intervals between precipitations and characteristics of precipitation. Regarding the quality of the water drained by these coverages, the results are quite variant and even contradictory. However, in general, it is agreed that the substrate and vegetation layers tend to release higher concentrations of substances, such as phosphorus, nitrogen, iron, and nitrite, and may decrease the quality of the drained water, as a result of the decomposition of organic matter in these systems. Finally, this review highlights the need for further studies on the hydrological performance of green roofs, and their influence on urban drainage systems. It is also observed that standardized research methods could help the compatibilization of results, and could contribute positively to the construction of compelling scientific evidence of the adaptation and performance of these coverages for Brazilian regions.