The effect of introducing a winter forage rotation on CO2 fluxes at a temperate grassland

dc.contributor.authorLeahy, Paul G.
dc.contributor.authorKiely, Gerard
dc.contributor.funderEnvironmental Protection Agencyen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2012-09-18T10:39:56Z
dc.date.available2012-09-18T10:39:56Z
dc.date.copyright2012
dc.date.issued2012-08
dc.date.updated2012-09-17T12:13:44Z
dc.description.abstractTemperate grasslands have the potential to sequester carbon, helping to mitigate rising atmospheric CO2 concentrations. The ability of grasslands to absorb CO2 is influenced by site elevation, soil type, management practices, climate and climatic variability. There is a need for long-term observations and field experiments to quantify the effects of the key drivers of management and climate variability. This paper presents over 4 years of eddy covariance measurements of CO2 flux over a managed temperate grassland site in south-east Ireland. For the first 2 years the entire study area was under grass. During the second 2 years a winter forage crop was grown over part of the site. The site was found to have a net uptake of CO2 during all years. However, the magnitude of the CO2 uptake varied considerably from year to year, with a maximum net uptake of 1.32 kg CO2 m−2 in 2004, a year with no winter forage crop. Net uptakes were much lower in the 2 years of mixed grass and kale cultivation, but detailed analysis of the measurement footprint and statistical comparisons showed that this was not due to the introduction of the forage rotation. For a short period following sowing of the forage crop, daytime CO2 uptake was less than that of the area under grass, but over subsequent months daytime CO2 uptake of the kale areas recovered strongly and exceeded that of the grass areas. The net effect over the year following kale planting is close to CO2-neutral.en
dc.description.sponsorshipEnvironmental Protection Agency (STRIVE programme Celticflux; 2001-CD-C2-M1); European Commission (EU 6th Framework project CarboEurope-IP); Science Foundation Ireland (Stokes Lectureship programme)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLeahy, P.; Kiely, G. (2012) 'The effect of introducing a winter forage rotation on CO2 fluxes at a temperate grassland'. Agriculture Ecosystems & Environment, 156 :49-56. doi: http://dx.doi.org/10.1016/j.agee.2012.05.001en
dc.identifier.doi10.1016/j.agee.2012.05.001
dc.identifier.endpage56en
dc.identifier.issn0167-8809
dc.identifier.journaltitleAgriculture Ecosystems & Environmenten
dc.identifier.startpage49en
dc.identifier.urihttps://hdl.handle.net/10468/707
dc.identifier.volume156en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsCopyright © 2012, Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Agriculture, Ecosystems & Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Agriculture, Ecosystems & Environment, [156, 1 August 2012] http://dx.doi.org/10.1016/j.agee.2012.05.001en
dc.subjectNet ecosystem exchangeen
dc.subjectLand useen
dc.subjectEddy covarianceen
dc.subjectIrelanden
dc.subjectKaleen
dc.titleThe effect of introducing a winter forage rotation on CO2 fluxes at a temperate grasslanden
dc.title.alternativeEffects of a winter forage crop rotation on CO2 fluxes at a managed grasslanden
dc.typeArticle (peer-reviewed)en
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
wex_grass_kale.pdf
Size:
1.55 MB
Format:
Adobe Portable Document Format
Description:
Accepted Version
License bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
2.71 KB
Format:
Item-specific license agreed upon to submission
Description: