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Runoff water quality from intensive and extensive vegetated roofs

Czemiel Berndtsson, Justyna LU ; Bengtsson, Lars LU and Jinno, Kenji (2009) In Ecological Engineering: the Journal of Ecotechnology 35(3). p.369-380
Abstract
Vegetated roofs are becoming a trend in urban design, among others as a tool for city greening, mitigating urban heat island effect, and lowering urban storm runoff. Additionally, pollutant removal within vegetated roofs is often expected; however, it is commonly riot a design feature. This study investigated influence on runoff water quality from two fullscale vegetated roofs (an intensive from Japan and an extensive from Sweden). Results show that both extensive and intensive vegetated roofs are a sink of nitrate nitrogen and ammonium. nitrogen with similar performance. The intensive vegetated roof is also a sink of total nitrogen in contrast to the extensive roof. Phosphorus release is observed from the extensive vegetated roof but not... (More)
Vegetated roofs are becoming a trend in urban design, among others as a tool for city greening, mitigating urban heat island effect, and lowering urban storm runoff. Additionally, pollutant removal within vegetated roofs is often expected; however, it is commonly riot a design feature. This study investigated influence on runoff water quality from two fullscale vegetated roofs (an intensive from Japan and an extensive from Sweden). Results show that both extensive and intensive vegetated roofs are a sink of nitrate nitrogen and ammonium. nitrogen with similar performance. The intensive vegetated roof is also a sink of total nitrogen in contrast to the extensive roof. Phosphorus release is observed from the extensive vegetated roof but not from the intensive vegetated roof;, release of dissolved organic carbon and potassium is observed from both roofs. The vegetated roofs, if not retaining the metal pollutants, were generally not a significant source. The increase of average pH during rainwater passage through the intensive vegetated roof indicated rapid neutralization of the acid depositions. (C) 2008 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Runoff quality, Nutrients, Green roof, Heavy metals, Vegetated, roof, Urban
in
Ecological Engineering: the Journal of Ecotechnology
volume
35
issue
3
pages
369 - 380
publisher
Elsevier
external identifiers
  • wos:000264972200004
  • scopus:61449231564
ISSN
1872-6992
DOI
10.1016/j.ecoleng.2008.09.020
language
English
LU publication?
yes
id
1b941a94-a378-4299-9a42-a6bfd5d00225 (old id 1400685)
date added to LUP
2009-06-12 10:46:33
date last changed
2017-11-05 03:30:04
@article{1b941a94-a378-4299-9a42-a6bfd5d00225,
  abstract     = {Vegetated roofs are becoming a trend in urban design, among others as a tool for city greening, mitigating urban heat island effect, and lowering urban storm runoff. Additionally, pollutant removal within vegetated roofs is often expected; however, it is commonly riot a design feature. This study investigated influence on runoff water quality from two fullscale vegetated roofs (an intensive from Japan and an extensive from Sweden). Results show that both extensive and intensive vegetated roofs are a sink of nitrate nitrogen and ammonium. nitrogen with similar performance. The intensive vegetated roof is also a sink of total nitrogen in contrast to the extensive roof. Phosphorus release is observed from the extensive vegetated roof but not from the intensive vegetated roof;, release of dissolved organic carbon and potassium is observed from both roofs. The vegetated roofs, if not retaining the metal pollutants, were generally not a significant source. The increase of average pH during rainwater passage through the intensive vegetated roof indicated rapid neutralization of the acid depositions. (C) 2008 Elsevier B.V. All rights reserved.},
  author       = {Czemiel Berndtsson, Justyna and Bengtsson, Lars and Jinno, Kenji},
  issn         = {1872-6992},
  keyword      = {Runoff quality,Nutrients,Green roof,Heavy metals,Vegetated,roof,Urban},
  language     = {eng},
  number       = {3},
  pages        = {369--380},
  publisher    = {Elsevier},
  series       = {Ecological Engineering: the Journal of Ecotechnology},
  title        = {Runoff water quality from intensive and extensive vegetated roofs},
  url          = {http://dx.doi.org/10.1016/j.ecoleng.2008.09.020},
  volume       = {35},
  year         = {2009},
}