Assessment of nitrous oxide emission factors for arable and grassland ecosystems

DC FieldValueLanguage
dc.contributor.authorO'Neill, M.-
dc.contributor.authorGallego-Lorenzo, L.-
dc.contributor.authorLanigan, Gary-
dc.contributor.authorForristal, Patrick Dermot-
dc.contributor.authorOsborne, Bruce A.-
dc.date.accessioned2021-11-09T16:52:11Z-
dc.date.available2021-11-09T16:52:11Z-
dc.date.copyright2020 the Authorsen_US
dc.date.issued2020-10-28-
dc.identifier.citationJournal of Integrative Environmental Sciencesen_US
dc.identifier.issn1943-815X-
dc.identifier.urihttp://hdl.handle.net/10197/12611-
dc.description.abstractWe quantified seasonal nitrous oxide (N2O) emissions and the associated emission factors (EFs) from: (i) winter oilseed rape (WOSR) cultivated under conventional tillage (CT) and strip tillage (ST) at four fertilizer rates (0, 160, 240 and 320 kg N ha−1) in 2014/2015, and (ii) grassland plots receiving no fertilizer (0 kg N ha−1), or mineral nitrogen (67 kg N ha−1), and either cattle or pig slurry (50, 100 and 200 m3 ha−1). Greater fluxes were observed at higher soil temperatures and a higher water filled pore space, suggesting that denitrification was the main source of N2O-N from the applied fertilizer/slurry. For WOSR, the N2O EFs ranged from 0.03 to 1.20% with no effect of the cultivation practice on EFs for equal rates of nitrogen fertilizer. Lower EF values were linked to differences in plant growth at individual sites rather than a specific management effect. For the grassland, the N2O EFs were highly variable, ranging from −0.70 to 0.49%, but were generally the highest in treatments receiving the highest concentrations of slurry. The EF values for WOSR illustrates that the Tier 1 approach for calculating EFs may be inadequate and the identification of site-specific effects can aid in refining N2O EF inventories. For the grassland plots all the EFs were significantly lower than the IPCC default values. Although the reason(s) for the low EFs with slurry amendments on grassland is not known, ammonia volatilization could decrease the pool of inorganic N that is available to nitrifying bacteria thereby lowering N2O fluxes.en_US
dc.description.sponsorshipTeagascen_US
dc.language.isoenen_US
dc.publisherTaylor & Francisen_US
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.subjectN2Oen_US
dc.subjectEmission factoren_US
dc.subjectTillageen_US
dc.subjectSlurryen_US
dc.subjectArableen_US
dc.subjectGrasslanden_US
dc.titleAssessment of nitrous oxide emission factors for arable and grassland ecosystemsen_US
dc.typeJournal Articleen_US
dc.internal.authorcontactotherbruce.osborne@ucd.ieen_US
dc.statusPeer revieweden_US
dc.identifier.volume17en_US
dc.identifier.issue3en_US
dc.identifier.startpage165en_US
dc.identifier.endpage185en_US
dc.identifier.doi10.1080/1943815x.2020.1825227-
dc.neeo.contributorO'Neill|M.|aut|-
dc.neeo.contributorGallego-Lorenzo|L.|aut|-
dc.neeo.contributorLanigan|Gary|aut|-
dc.neeo.contributorForristal|Patrick Dermot|aut|-
dc.neeo.contributorOsborne|Bruce A.|aut|-
dc.date.updated2020-10-28T17:27:10Z-
dc.identifier.grantid2013066-
dc.rights.licensehttps://creativecommons.org/licenses/by/3.0/ie/en_US
item.grantfulltextopen-
item.fulltextWith Fulltext-
Appears in Collections:Biology & Environmental Science Research Collection
Earth Institute Research Collection
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