Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/16163
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dc.contributor.authorCao, Cuong Thi Ngocen
dc.contributor.authorFarrell, Claireen
dc.contributor.authorKristiansen, Paulen
dc.contributor.authorRayner, Johnen
dc.date.accessioned2014-11-27T11:51:00Z-
dc.date.issued2014-
dc.identifier.citationEcological Engineering, v.71, p. 368-374en
dc.identifier.issn1872-6992en
dc.identifier.issn0925-8574en
dc.identifier.urihttps://hdl.handle.net/1959.11/16163-
dc.description.abstractGreen roofs are increasingly being built to manage stormwater runoff in cities. Water-retention additives such as biochar could be a useful way of increasing substrate water holding capacity (WHC) and therefore stormwater retention without increasing substrate weight loading. If this also increases plant available water (PAW), plant selection could be expanded to species with higher water use, further reducing stormwater runoff by drying substrates after rain. We examined the effects of adding one type of green waste biochar (0, 10, 20, 30 and 40%, v/v) to two scoria-based substrates (with or without added organic matter) on WHC, bulk density, PAW and days taken to reach permanent wilting point (PWP). Biochar significantly improved WHC, increasing with greater additions of biochar. Increased water was also plant available, with 30% biochar increasing PAW by 16% (scoria with organic matter) and PWP by 2 days in both substrates. Biochar did not affect plant growth or biomass allocation. Application of 30% biochar was optimal for PAW and delaying PWP. However, as 40% biochar significantly increased WHC, this rate will likely be optimal for stormwater retention, with an additional 2.3 cm rainfall/cm area retained in 10 cm deep substrates. Biochar also significantly reduced bulk density, substrates with 40% biochar could have an additional 1.5 cm/m2 of depth compared to the same weight as scoria only, further increasing PAW and rainfall retention. Consequently, in this study, biochar addition makes green roof substrates lighter and improves plant water supply; potentially expanding plant selection in dry climates and improving their stormwater retention.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofEcological Engineeringen
dc.titleBiochar makes green roof substrates lighter and improves water supply to plantsen
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.ecoleng.2014.06.017en
dc.subject.keywordsSustainable Agricultural Developmenten
dc.subject.keywordsSoil Physicsen
dc.subject.keywordsHorticultural Crop Growth and Developmenten
local.contributor.firstnameCuong Thi Ngocen
local.contributor.firstnameClaireen
local.contributor.firstnamePaulen
local.contributor.firstnameJohnen
local.subject.for2008050305 Soil Physicsen
local.subject.for2008070108 Sustainable Agricultural Developmenten
local.subject.for2008070601 Horticultural Crop Growth and Developmenten
local.subject.seo2008829899 Environmentally Sustainable Plant Production not elsewhere classifieden
local.subject.seo2008961407 Urban and Industrial Soilsen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailctncuong@hcmuaf.edu.vnen
local.profile.emailc.farrell@unimelb.edu.auen
local.profile.emailpkristi2@une.edu.auen
local.profile.emailjrayner@unimelb.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20141126-002330en
local.publisher.placeNetherlandsen
local.format.startpage368en
local.format.endpage374en
local.identifier.scopusid84908083924en
local.peerreviewedYesen
local.identifier.volume71en
local.contributor.lastnameCaoen
local.contributor.lastnameFarrellen
local.contributor.lastnameKristiansenen
local.contributor.lastnameRayneren
dc.identifier.staffune-id:pkristi2en
local.profile.orcid0000-0003-2116-0663en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:16400en
local.identifier.handlehttps://hdl.handle.net/1959.11/16163en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleBiochar makes green roof substrates lighter and improves water supply to plantsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorCao, Cuong Thi Ngocen
local.search.authorFarrell, Claireen
local.search.authorKristiansen, Paulen
local.search.authorRayner, Johnen
local.uneassociationUnknownen
local.identifier.wosid000343151000044en
local.year.published2014en
local.subject.for2020410605 Soil physicsen
local.subject.for2020300210 Sustainable agricultural developmenten
local.subject.for2020300802 Horticultural crop growth and developmenten
local.subject.seo2020180605 Soilsen
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