Sustainable Water Management in Urban Environment: Green Roof Experience in Semiarid Climate

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dc.catalogadorgrr
dc.contributor.authorReyes Piña, Fermín Rodolfo
dc.contributor.authorVera Araya, Sergio Eduardo
dc.contributor.authorVictorero Castaño, Felipe Andres
dc.contributor.authorBustamante Gómez, Waldo
dc.contributor.authorGironás León, Jorge Alfredo
dc.contributor.authorRojas, Victoria
dc.contributor.authorBonilla Meléndez, Carlos Alberto
dc.contributor.otherCEDEUS (Chile)
dc.date.accessioned2024-09-25T15:48:24Z
dc.date.available2024-09-25T15:48:24Z
dc.date.issued2015
dc.description.abstractMost green roofs have been studied and built in humid climates, with many benefits such as thermal isolation and biodiversity. However, little is known about their performance in arid and semiarid climates where irrigation system affects the sustainability of this technology. In order to improve the water efficiency and get a sustainable water management, five 4-m2 modules of vegetated roofs were instrumented and monitored to evaluate the irrigation water requirements during the first year in Santiago, Chile (33 degrees 26 ' S, 70 degrees 39 ' W, 570 MASL). Based on the water retention properties, the maximum soil available water was 10%, the permanent wilting point was 17% and 27% at field capacity. Three substrate depths (5-cm, 10-cm and 20-cm) and three commercial drainage systems found in Chile were evaluated. The results showed that with the same drainage system and irrigation conditions, the substrate depth controls both, stored water and daily temperature oscillation during summer. While 5 and 10-cm substrates showed low water contents ( close to the minimum for plant survival) and peak temperatures (54 degrees C and 38 degrees C respectively), 20-cm substrate reached the minimum soil moisture only in days with high atmospheric demands reaching a peak soil temperature of 27 degrees C. To provide a better and sustainable condition for the 5-cm green roof modules, water retention capacity was incremented to resist the harsh summer atmospheric conditions. With a proper drainage system, substrate moisture in 5-cm green roof was equal or higher than the measured in the 20-cm green roof. However, peak temperatures were not reduced. Therefore, in addition to water requirements and plant species tolerance to drought and high temperatures, it is crucial to know the soil water retention properties and selecting a suitable type of drainage. These factors, along with the irrigation criterion, must be considered in order to get a sustainable water management on an urban green roof when built in semiarid climate.
dc.description.funderINNOVA-CORFO
dc.description.funderCONICYT/FONDAP
dc.fechaingreso.objetodigital2024-09-25
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.eisbn978-90-824846-0-1
dc.identifier.isbn978-9082484601
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87956
dc.identifier.wosidWOS:000398996200086
dc.information.autorucEscuela de Ingeniería; Reyes Piña, Fermín Rodolfo; S/I; 185657
dc.information.autorucEscuela de Ingeniería; Vera Araya, Sergio Eduardo; 0000-0002-7257-0710; 1659
dc.information.autorucEscuela de Arquitectura; Victorero Castaño, Felipe Andres; S/I; 133897
dc.information.autorucEscuela de Arquitectura; Bustamante Gómez, Waldo ; 0000-0002-0420-5383; 60669
dc.information.autorucEscuela de Ingeniería; Gironás León, Jorge Alfredo; 0000-0002-6933-2658; 1681
dc.information.autorucEscuela de Ingeniería; Bonilla Meléndez, Carlos Alberto; S/I; 80465
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final718
dc.pagina.inicio711
dc.publisherIAHR-International Association of Hydro-Environment Engineering Research
dc.revistaProceedings of the 36th IAHR World Congress
dc.rightsacceso abierto
dc.subjectSustainability
dc.subjectSemiarid climate
dc.subjectGreen roofs
dc.subjectSoil water availability
dc.subject.ddc300
dc.subject.deweyCiencias socialeses_ES
dc.titleSustainable Water Management in Urban Environment: Green Roof Experience in Semiarid Climate
dc.typecomunicación de congreso
sipa.codpersvinculados185657
sipa.codpersvinculados1659
sipa.codpersvinculados133897
sipa.codpersvinculados60669
sipa.codpersvinculados1681
sipa.codpersvinculados80465
sipa.trazabilidadWOS;05-06-2021
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