Plant cover and floristic composition effect on thermal behaviour of extensive green roofs

In the last few years an increasing attention has been paid to efficient energy construction systems in the building sector. Although in this contest extensive green roofs are reported to be very effective and sustainable systems, the fact that the main agents of this systems are living organisms ha...

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Autores: Bevilacqua, Piero, Coma Arpón, Julià, Pérez Luque, Gabriel, Chocarro, Cristina, Juárez Escario, Alejandro, Solé Cutrona, Cristian, De Simone, Marilena, Cabeza, Luisa F.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/49013
Acceso en línea:https://doi.org/10.1016/j.buildenv.2015.04.026
http://hdl.handle.net/10459.1/49013
Access Level:acceso abierto
Palabra clave:Plantes ornamentals
Arquitectura i clima
Arquitectura sostenible
Ornamental plants
Architecture and climate
Sustainable architecture
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spelling Plant cover and floristic composition effect on thermal behaviour of extensive green roofsBevilacqua, PieroComa Arpón, JuliàPérez Luque, GabrielChocarro, CristinaJuárez Escario, AlejandroSolé Cutrona, CristianDe Simone, MarilenaCabeza, Luisa F.Plantes ornamentalsArquitectura i climaArquitectura sostenibleOrnamental plantsArchitecture and climateSustainable architectureIn the last few years an increasing attention has been paid to efficient energy construction systems in the building sector. Although in this contest extensive green roofs are reported to be very effective and sustainable systems, the fact that the main agents of this systems are living organisms have generated doubts, especially in locations where the development of plants and vegetation can be greatly affected by climate. This study aims to investigate the thermal performances of a 2000 m2 18 particular proprietary extensive green roof system, located on the city of Lleida (Spain), classified as Dry Mediterranean Continental climate. First, plant cover and floristic composition analysis were carried out to evaluate the dynamic of the plant layer over the surface. Then, according to the result of the botanic analysis, summer and winter study in terms of spatial and temporal factors were conducted focusing on the substrate layer, evapotranspiration effect and comparing the different behaviour of the system in low 10%) and high (80%) plant cover conditions. In this extensive green roof, the results showed temporal and spatial changes in floristic composition, with a stable cover of Sedum sp between 20 to 40 %, and a peak of colonizing species in spring and early summer. The increase in vegetation cover appears to have few effects on the above nearby roof environment because of the low moisture level in the substrate layer so that the cooling effect provided by the evapotranspiration does not take place. In addition, the increased presence of vegetation canopy may induce a limitation in substrate night cooling whereas serves as good shield for solar radiation during the day. Finally, the study also reveals the importance of the spatial factor in extensive green roofs, which can lead to not negligible variations on the thermal performance, as well as the floristic composition.The work was partially funded by the Spanish Government (ENE2011-28269-C03-02 and ENE2011-28269-C03-03), in collaboration with Gardeny Science and Technology Park in Lleida (Spain). The authors would like to thank the architect Josep Maria Puigdemasa his provision of information about the renovation project. On the other hand the authors would like to thank the Catalan Government for the quality accreditation given to their research group (2014 SGR 123). Julià Coma wants to thank the Departament d'Universitats, Recerca i Societat de la Informació de la Generalitat de Catalunya for his research fellowship. Furthermore the research was supported by the Italian Ministry of Education, University and Research MIUR.Elsevier2015201720152015info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1016/j.buildenv.2015.04.026http://hdl.handle.net/10459.1/49013http://hdl.handle.net/10459.1/49013reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/grantAgreement/MICINN//ENE2011-28269-C03-02info:eu-repo/grantAgreement/MICINN//ENE2011-28269-C03-03Versió postprint del document publicat a: https://doi.org/10.1016/j.buildenv.2015.04.026Building and Environment, 2015, vol. 92, p. 305-316cc-by-nc-nd, (c) Elsevier, 2015info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:recercat.cat:10459.1/490132026-05-29T05:05:01Z
dc.title.none.fl_str_mv Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
title Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
spellingShingle Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
Bevilacqua, Piero
Plantes ornamentals
Arquitectura i clima
Arquitectura sostenible
Ornamental plants
Architecture and climate
Sustainable architecture
title_short Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
title_full Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
title_fullStr Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
title_full_unstemmed Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
title_sort Plant cover and floristic composition effect on thermal behaviour of extensive green roofs
dc.creator.none.fl_str_mv Bevilacqua, Piero
Coma Arpón, Julià
Pérez Luque, Gabriel
Chocarro, Cristina
Juárez Escario, Alejandro
Solé Cutrona, Cristian
De Simone, Marilena
Cabeza, Luisa F.
author Bevilacqua, Piero
author_facet Bevilacqua, Piero
Coma Arpón, Julià
Pérez Luque, Gabriel
Chocarro, Cristina
Juárez Escario, Alejandro
Solé Cutrona, Cristian
De Simone, Marilena
Cabeza, Luisa F.
author_role author
author2 Coma Arpón, Julià
Pérez Luque, Gabriel
Chocarro, Cristina
Juárez Escario, Alejandro
Solé Cutrona, Cristian
De Simone, Marilena
Cabeza, Luisa F.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Plantes ornamentals
Arquitectura i clima
Arquitectura sostenible
Ornamental plants
Architecture and climate
Sustainable architecture
topic Plantes ornamentals
Arquitectura i clima
Arquitectura sostenible
Ornamental plants
Architecture and climate
Sustainable architecture
description In the last few years an increasing attention has been paid to efficient energy construction systems in the building sector. Although in this contest extensive green roofs are reported to be very effective and sustainable systems, the fact that the main agents of this systems are living organisms have generated doubts, especially in locations where the development of plants and vegetation can be greatly affected by climate. This study aims to investigate the thermal performances of a 2000 m2 18 particular proprietary extensive green roof system, located on the city of Lleida (Spain), classified as Dry Mediterranean Continental climate. First, plant cover and floristic composition analysis were carried out to evaluate the dynamic of the plant layer over the surface. Then, according to the result of the botanic analysis, summer and winter study in terms of spatial and temporal factors were conducted focusing on the substrate layer, evapotranspiration effect and comparing the different behaviour of the system in low 10%) and high (80%) plant cover conditions. In this extensive green roof, the results showed temporal and spatial changes in floristic composition, with a stable cover of Sedum sp between 20 to 40 %, and a peak of colonizing species in spring and early summer. The increase in vegetation cover appears to have few effects on the above nearby roof environment because of the low moisture level in the substrate layer so that the cooling effect provided by the evapotranspiration does not take place. In addition, the increased presence of vegetation canopy may induce a limitation in substrate night cooling whereas serves as good shield for solar radiation during the day. Finally, the study also reveals the importance of the spatial factor in extensive green roofs, which can lead to not negligible variations on the thermal performance, as well as the floristic composition.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015
2015
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.buildenv.2015.04.026
http://hdl.handle.net/10459.1/49013
http://hdl.handle.net/10459.1/49013
url https://doi.org/10.1016/j.buildenv.2015.04.026
http://hdl.handle.net/10459.1/49013
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN//ENE2011-28269-C03-02
info:eu-repo/grantAgreement/MICINN//ENE2011-28269-C03-03
Versió postprint del document publicat a: https://doi.org/10.1016/j.buildenv.2015.04.026
Building and Environment, 2015, vol. 92, p. 305-316
dc.rights.none.fl_str_mv cc-by-nc-nd, (c) Elsevier, 2015
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd, (c) Elsevier, 2015
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
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repository.mail.fl_str_mv
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