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Aspects of trees and their influence in reducing solar radiation penetration to the ground

Vegetation plays an important role in modifying the climate in urban areas. Apart from its function that is to provide shade, the absorption of high proportion of the solar radiation by the dark green leaves, the cooling effect from the evaporation of water from the leaves and the potential of reduc...

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Main Authors: Abu Bakar, Aniza, Abdul Malek, Nurhayati, Mohamad, Amira Nadhirah, Hj Mohd Ariffin, Noor Aziah
Format: Conference or Workshop Item
Language:English
English
Published: 2013
Subjects:
Q Science (General)
Online Access:http://irep.iium.edu.my/35198/1/SusTED2013_-_cover_page_and_table_of_content.pdf
http://irep.iium.edu.my/35198/3/SusTED2013_aniza_irep.pdf
http://irep.iium.edu.my/35198/
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spelling my.iium.irep.351982021-07-29T16:18:33Z http://irep.iium.edu.my/35198/ Aspects of trees and their influence in reducing solar radiation penetration to the ground Abu Bakar, Aniza Abdul Malek, Nurhayati Mohamad, Amira Nadhirah Hj Mohd Ariffin, Noor Aziah Q Science (General) Vegetation plays an important role in modifying the climate in urban areas. Apart from its function that is to provide shade, the absorption of high proportion of the solar radiation by the dark green leaves, the cooling effect from the evaporation of water from the leaves and the potential of reducing glare are among the roles of vegetation in modifying the microclimate. Not only providing the screening effect to reduce the solar penetration on the ground and walls, the existence of trees in clumps also has the potential in reducing the ambient temperature. However, the potential of trees in addressing the above mentioned functions are yet to be empirically investigated. This study is intended to investigate the aspect of trees: which are the trunk height, crown height, diameter of the canopy as well as the foliage density, and their effect in screening the solar radiation from penetrating and heating the ground. The data collection was done within the campus of the International Islamic University Malaysia (IIUM) due to the availability of various types of trees. Conducted in July 2013 this study involved 89 trees from four case study sites. Solar radiation readings were taken at human level of about 1.5m from the ground underneath the canopies of the investigated trees, between 11am to 3pm. The initial results show significant reduction of the quantity of solar radiation penetrating the canopies from the different tree aspects. These findings are hoped to guide designers in choosing appropriate trees in achieving their design intentions especially when addressing the thermal comfort of users and in mitigating the urban heat island effect. Keywords: solar radiation, tree aspects – trunk height, crown height, canopy diameter, foliage density 2013-12-18 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/35198/1/SusTED2013_-_cover_page_and_table_of_content.pdf application/pdf en http://irep.iium.edu.my/35198/3/SusTED2013_aniza_irep.pdf Abu Bakar, Aniza and Abdul Malek, Nurhayati and Mohamad, Amira Nadhirah and Hj Mohd Ariffin, Noor Aziah (2013) Aspects of trees and their influence in reducing solar radiation penetration to the ground. In: SusTED'13 : innovation in the built environment, 18 & 19 December 2013, UPM.
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic Q Science (General)
spellingShingle Q Science (General)
Abu Bakar, Aniza
Abdul Malek, Nurhayati
Mohamad, Amira Nadhirah
Hj Mohd Ariffin, Noor Aziah
Aspects of trees and their influence in reducing solar radiation penetration to the ground
description Vegetation plays an important role in modifying the climate in urban areas. Apart from its function that is to provide shade, the absorption of high proportion of the solar radiation by the dark green leaves, the cooling effect from the evaporation of water from the leaves and the potential of reducing glare are among the roles of vegetation in modifying the microclimate. Not only providing the screening effect to reduce the solar penetration on the ground and walls, the existence of trees in clumps also has the potential in reducing the ambient temperature. However, the potential of trees in addressing the above mentioned functions are yet to be empirically investigated. This study is intended to investigate the aspect of trees: which are the trunk height, crown height, diameter of the canopy as well as the foliage density, and their effect in screening the solar radiation from penetrating and heating the ground. The data collection was done within the campus of the International Islamic University Malaysia (IIUM) due to the availability of various types of trees. Conducted in July 2013 this study involved 89 trees from four case study sites. Solar radiation readings were taken at human level of about 1.5m from the ground underneath the canopies of the investigated trees, between 11am to 3pm. The initial results show significant reduction of the quantity of solar radiation penetrating the canopies from the different tree aspects. These findings are hoped to guide designers in choosing appropriate trees in achieving their design intentions especially when addressing the thermal comfort of users and in mitigating the urban heat island effect. Keywords: solar radiation, tree aspects – trunk height, crown height, canopy diameter, foliage density
format Conference or Workshop Item
author Abu Bakar, Aniza
Abdul Malek, Nurhayati
Mohamad, Amira Nadhirah
Hj Mohd Ariffin, Noor Aziah
author_facet Abu Bakar, Aniza
Abdul Malek, Nurhayati
Mohamad, Amira Nadhirah
Hj Mohd Ariffin, Noor Aziah
author_sort Abu Bakar, Aniza
title Aspects of trees and their influence in reducing solar radiation penetration to the ground
title_short Aspects of trees and their influence in reducing solar radiation penetration to the ground
title_full Aspects of trees and their influence in reducing solar radiation penetration to the ground
title_fullStr Aspects of trees and their influence in reducing solar radiation penetration to the ground
title_full_unstemmed Aspects of trees and their influence in reducing solar radiation penetration to the ground
title_sort aspects of trees and their influence in reducing solar radiation penetration to the ground
publishDate 2013
url http://irep.iium.edu.my/35198/1/SusTED2013_-_cover_page_and_table_of_content.pdf
http://irep.iium.edu.my/35198/3/SusTED2013_aniza_irep.pdf
http://irep.iium.edu.my/35198/
_version_ 1706956506646183936
score 13.211869

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