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Impacts of high precipitation on the energy and water budgets of a humid boreal forest

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ali.license-refhttps://creativecommons.org/licenses/by-nc-nd/4.0
ali.license-ref.start-date2021-10-24
bul.description.provenanceelmon chlacfr
bul.rights.dateAccepPubl2019-10-24fr
bul.rights.periodeEmbargoP2Yfr
bul.rights.typeDatedatePublicationfr
dc.contributor.authorIsabelle, Pierre-Erik
dc.contributor.authorAnctil, François
dc.contributor.authorNadeau, Daniel
dc.contributor.authorRousseau, Alain N.
dc.contributor.authorMusic, Biljana
dc.contributor.authorJutras, Sylvain
dc.coverage.spatialAmérique du Nordfr
dc.date.accessioned2021-10-20T19:34:54Z
dc.date.available2021-10-24
dc.date.issued2019-10-24
dc.description.abstractThe boreal forest will be strongly affected by climate change and in turn, these vast ecosystems may significantly impact global climatology and hydrology due to their exchanges of carbon and water with the atmosphere. It is now crucial to understand the intricate relationships between precipitation and evapotranspiration in these environments, particularly in less-studied locations characterized by a cold and humid climate. This study presents state-of-the-art measurements of energy and water budgets components over three years (2016–2018) at the Montmorency Forest, Québec, Canada: a balsam fir boreal forest that receives ∼1600 mm of precipitation annually (continental subarctic climate; Köppen classification subtype Dfc). Precipitation, evapotranspiration and potential evapotranspiration at the site are compared with observations from thirteen experimental sites around the world. These intercomparison sites (89 study-years) encompass various types of climate and vegetation (black spruces, jack pines, etc.) encountered in boreal forests worldwide. The Montmorency Forest stands out by receiving the largest amount of precipitation. Across all sites, water availability seems to be the principal evapotranspiration constraint, as precipitation tends to be more influential than potential evapotranspiration and other factors. This leads to the Montmorency Forest generating the largest amount of evapotranspiration, on average ∼550 mm y−1. This value appears to be an ecosystem maximum for evapotranspiration, which may be explained either by a physiological limit or a limited energy availability due to the presence of cloud cover. The Montmorency Forest water budget evacuates the precipitation excess mostly by watershed discharges, at an average rate of ∼1050 mm y−1, with peaks during the spring freshet. This behaviour, typical of mountainous headwater basins, necessarily influence downstream hydrological regimes to a large extent. This study provides a much needed insight in the hydrological regimes of a humid boreal-forested mountainous watershed, a type of basin rarely studied with precise energy and water budgets before.fr
dc.identifier.doi10.1016/j.agrformet.2019.107813fr
dc.identifier.issn0168-1923fr
dc.identifier.urihttp://hdl.handle.net/20.500.11794/70634
dc.languageengfr
dc.publisherElsevierfr
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.subjectEvapotranspirationfr
dc.subjectEnergy budgetfr
dc.subjectBoreal forestfr
dc.subjectWater budgetfr
dc.subjectWatershed hydrologyfr
dc.subjectEddy-covariancefr
dc.subject.rvmÉcologie des forêts boréalesfr
dc.subject.rvmÉvapotranspirationfr
dc.subject.rvmHydrologie des bassins hydrographiquesfr
dc.subject.rvmBilan énergétique (Géophysique)fr
dc.subject.rvmAnalyse de covariancefr
dc.titleImpacts of high precipitation on the energy and water budgets of a humid boreal forestfr
dc.typearticle de recherche
dc.type.legacyCOAR1_1::Texte::Périodique::Revue::Contribution à un journal::Article::Article de recherchefr
dcterms.bibliographicCitationAgricultural and forest meteorology, Vol. 280, (2020)fr
dspace.accessstatus.time2023-05-26 18:02:13
dspace.entity.typePublication
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relation.isAuthorOfPublication.latestForDiscovery0ee22fe9-29de-41c3-9918-26fe16108e5f
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rioxxterms.project.funder-nameNatural Sciences and Engineering Research Council of Canadafr
rioxxterms.project.funder-nameConsortium Ouranosfr
rioxxterms.project.funder-nameHydro-Québecfr
rioxxterms.project.funder-nameEnvironment and Climate Change Canadafr
rioxxterms.project.funder-nameMinistère de l'Environnement et de la Lutte contre les Changements climatiquesfr
rioxxterms.project.funder-nameFonds de Recherche du Québec - Nature et Technologiesfr
rioxxterms.versionAccepted Manuscript (AM)fr
rioxxterms.version-of-recordhttps://doi.org/10.1016/j.agrformet.2019.107813fr
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