Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/12679
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dc.contributor.authorDeurer, Men
dc.contributor.authorMuller, Ken
dc.contributor.authorKim, Ien
dc.contributor.authorYoung, Iainen
dc.contributor.authorJun, GIen
dc.contributor.authorClothier, BEen
dc.date.accessioned2013-06-06T14:10:00Z-
dc.date.issued2012-
dc.identifier.citationGeoderma, v.183-184, p. 74-79en
dc.identifier.issn1872-6259en
dc.identifier.issn0016-7061en
dc.identifier.urihttps://hdl.handle.net/1959.11/12679-
dc.description.abstractIn an organic apple ('Malus domestica' Borkh., Braeburn on MM.106 rootstock) orchard in New Zealand we observed that the soil's carbon concentration in 0-0.1 m depth directly below a wheel-track in the grassed alley-way was significantly higher than under the grassed tree-row. By using a literature review and direct measurements, we systematically exclude two explanations for the possible accumulation of soil carbon under the wheel-track. Firstly, we discard the possibility of higher carbon inputs to the wheel-track compared to the tree-row area. The tree-row received more carbon inputs by the regular application of compost, and the growth of roots was not impeded by compaction. Secondly, we directly measured the monthly dynamics of microbial biomass and respiration rates per unit of soil carbon over a year, and based on 3D X-ray computed tomography (CT) images we modelled the gas exchange close to water saturation. A restricted gas exchange under wet conditions would be an indication that soil carbon mineralization is reduced under wet conditions. We found that both the microbial carbon decomposition dynamics and the gas exchange under wet conditions were similar in the tree-row and under the wheel-track. The most probable explanation for the enhanced carbon sequestration under the wheel-track is a reduction in carbon losses. The water infiltration rates into the wheel-tracks were significantly smaller than in the tree-row. This means that the carbon loss with water flow in the form of dissolved carbon is probably smaller under the wheel-track. Additionally, a reduction in meso- and macro-faunal activities exporting particulate organic matter from the soil volume is probable under minor compaction. We conclude that a minor compaction like under a wheel-track can be a physical protection mechanism for soil carbon.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofGeodermaen
dc.titleCan minor compaction increase soil carbon sequestration? A case study in a soil under a wheel-track in an orcharden
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.geoderma.2012.02.013en
dc.subject.keywordsSoil Physicsen
dc.subject.keywordsCarbon Sequestration Scienceen
dc.subject.keywordsSoil Biologyen
local.contributor.firstnameMen
local.contributor.firstnameKen
local.contributor.firstnameIen
local.contributor.firstnameIainen
local.contributor.firstnameGIen
local.contributor.firstnameBEen
local.subject.for2008050303 Soil Biologyen
local.subject.for2008050305 Soil Physicsen
local.subject.for2008050301 Carbon Sequestration Scienceen
local.subject.seo2008961402 Farmland, Arable Cropland and Permanent Cropland Soilsen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailiyoung4@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20130118-103119en
local.publisher.placeNetherlandsen
local.format.startpage74en
local.format.endpage79en
local.peerreviewedYesen
local.identifier.volume183-184en
local.contributor.lastnameDeureren
local.contributor.lastnameMulleren
local.contributor.lastnameKimen
local.contributor.lastnameYoungen
local.contributor.lastnameJunen
local.contributor.lastnameClothieren
dc.identifier.staffune-id:iyoung4en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:12887en
dc.identifier.academiclevelAcademicen
local.title.maintitleCan minor compaction increase soil carbon sequestration? A case study in a soil under a wheel-track in an orcharden
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorDeurer, Men
local.search.authorMuller, Ken
local.search.authorKim, Ien
local.search.authorYoung, Iainen
local.search.authorJun, GIen
local.search.authorClothier, BEen
local.uneassociationUnknownen
local.identifier.wosid000305201700010en
local.year.published2012en
local.subject.for2020410603 Soil biologyen
local.subject.for2020410605 Soil physicsen
local.subject.for2020410101 Carbon sequestration scienceen
local.subject.seo2020180605 Soilsen
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