Pan-Arctic modelling of net ecosystem exchange of CO2

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cg.coverage.countryGreenland
cg.coverage.countrySweden
cg.coverage.iso3166-alpha2GL
cg.coverage.iso3166-alpha2SE
cg.coverage.regionNorthern America
cg.coverage.regionNorthern Europe
cg.creator.identifierMark van Wijk: 0000-0003-0728-8839
cg.howPublishedFormally Published
cg.identifier.doihttps://doi.org/10.1098/rstb.2012.0485
cg.isijournalISI Journal
cg.issn0962-8436
cg.issue1624
cg.journalPhilosophical Transactions of the Royal Society B
cg.subject.ilriCLIMATE CHANGE
cg.subject.ilriENVIRONMENT
cg.volume368
dc.contributor.authorShaver, G.R.
dc.contributor.authorRastetter, E.B.
dc.contributor.authorSalmon, V.
dc.contributor.authorStreet, L.E.
dc.contributor.authorWeg, M.J. van de
dc.contributor.authorRocha, A.
dc.contributor.authorWijk, Mark T. van
dc.contributor.authorWilliams, M.
dc.date.accessioned2014-02-02T10:24:54Zen
dc.date.available2014-02-02T10:24:54Zen
dc.identifier.urihttps://hdl.handle.net/10568/34491
dc.titlePan-Arctic modelling of net ecosystem exchange of CO2en
dcterms.abstractNet ecosystem exchange (NEE) of C varies greatly among Arctic ecosystems. Here, we show that approximately 75 per cent of this variation can be accounted for in a single regression model that predicts NEE as a function of leaf area index (LAI), air temperature and photosynthetically active radiation (PAR). The model was developed in concert with a survey of the light response of NEE in Arctic and subarctic tundras in Alaska, Greenland, Svalbard and Sweden. Model parametrizations based on data collected in one part of the Arctic can be used to predict NEE in other parts of the Arctic with accuracy similar to that of predictions based on data collected in the same site where NEE is predicted. The principal requirement for the dataset is that it should contain a sufficiently wide range of measurements of NEE at both high and low values of LAI, air temperature and PAR, to properly constrain the estimates of model parameters. Canopy N content can also be substituted for leaf area in predicting NEE, with equal or greater accuracy, but substitution of soil temperature for air temperature does not improve predictions. Overall, the results suggest a remarkable convergence in regulation of NEE in diverse ecosystem types throughout the Arctic.en
dcterms.accessRightsOpen Access
dcterms.audienceScientists
dcterms.available2013-08-19
dcterms.bibliographicCitationShaver, G.R., Rastetter, E.B., Salmon, V., Street, L.E, Weg, M.J. van de, Rocha, A., Wijk M.T. van and Williams, M. 2013. Pan-Arctic modelling of net ecosystem exchange of CO2. Philosophical Transaction of the Royal Society B 368(1624)en
dcterms.issued2013-08-19
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherRoyal Society
dcterms.subjectenvironmenten
dcterms.subjectclimate changeen
dcterms.typeJournal Article

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