A pilot study to evaluate runoff quantity from green roofs

Title
A pilot study to evaluate runoff quantity from green roofs
Authors
이주영이민정한무영
Keywords
Green roofs; Environmental Quality; Reducing runoff quantity; Spearman Rank Correlation; BMP
Issue Date
2015-04
Publisher
Journal of environmental management
Citation
VOL 152, 171-176
Abstract
The use of green roofs is gaining increased recognition in many countries as a solution that can be used to improve environmental quality and reduce runoff quantity. To achieve these goals, pilot-scale green roof assemblies have been constructed and operated in an urban setting. From a stormwater management perspective, green roofs are 42.8e60.8% effective in reducing runoff for 200 mm soil depth and 13.8 e34.4% effective in reducing runoff for 150 mm soil depth. By using Spearman rank correlation analysis, high rainfall intensity was shown to have a negative relationship with delayed occurrence time, demonstrating that the soil media in green roofs do not efficiently retain rainwater. Increasing the number of antecedent dry days can help to improve water retention capacity and delay occurrence time. From the viewpoint of runoff water quality, green roofs are regarded as the best management practice by filtration and adsorption through growth media (soil).
URI
http://pubs.kist.re.kr/handle/201004/50737
ISSN
03014797
Appears in Collections:
KIST Publication > Article
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