Carbon-nitrogen interactions in European forests and semi-natural vegetation - Part 2 : Untangling climatic, edaphic, management and nitrogen deposition effects on carbon sequestration potentials

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dc.contributor.author Flechard, Chris R.
dc.contributor.author van Oijen, Marcel
dc.contributor.author Cameron, David R.
dc.contributor.author de Vries, Wim
dc.contributor.author Ibrom, Andreas
dc.contributor.author Buchmann, Nina
dc.contributor.author Dise, Nancy B.
dc.contributor.author Janssens, Ivan A.
dc.contributor.author Neirynck, Johan
dc.contributor.author Montagnani, Leonardo
dc.contributor.author Varlagin, Andrej
dc.contributor.author Loustau, Denis
dc.contributor.author Legout, Arnaud
dc.contributor.author Ziemblinska, Klaudia
dc.contributor.author Aubinet, Marc
dc.contributor.author Aurela, Mika
dc.contributor.author Chojnicki, Bogdan H.
dc.contributor.author Drewer, Julia
dc.contributor.author Eugster, Werner
dc.contributor.author Francez, Andre-Jean
dc.contributor.author Juszczak, Radoslaw
dc.contributor.author Kitzler, Barbara
dc.contributor.author Kutsch, Werner L.
dc.contributor.author Lohila, Annalea
dc.contributor.author Longdoz, Bernard
dc.contributor.author Matteucci, Giorgio
dc.contributor.author Moreaux, Virginie
dc.contributor.author Nefte, Albrecht
dc.contributor.author Olejnik, Janusz
dc.contributor.author Sanz, Maria J.
dc.contributor.author Siemens, Jan
dc.contributor.author Vesala, Timo
dc.contributor.author Vincke, Caroline
dc.contributor.author Nemitz, Eiko
dc.contributor.author Zechmeister-Boltenstern, Sophie
dc.contributor.author Butterbach-Bahl, Klaus
dc.contributor.author Skiba, Ute M.
dc.contributor.author Sutton, Mark A.
dc.date.accessioned 2020-04-29T14:21:02Z
dc.date.available 2020-04-29T14:21:02Z
dc.date.issued 2020-03-26
dc.identifier.citation Flechard , C R , van Oijen , M , Cameron , D R , de Vries , W , Ibrom , A , Buchmann , N , Dise , N B , Janssens , I A , Neirynck , J , Montagnani , L , Varlagin , A , Loustau , D , Legout , A , Ziemblinska , K , Aubinet , M , Aurela , M , Chojnicki , B H , Drewer , J , Eugster , W , Francez , A-J , Juszczak , R , Kitzler , B , Kutsch , W L , Lohila , A , Longdoz , B , Matteucci , G , Moreaux , V , Nefte , A , Olejnik , J , Sanz , M J , Siemens , J , Vesala , T , Vincke , C , Nemitz , E , Zechmeister-Boltenstern , S , Butterbach-Bahl , K , Skiba , U M & Sutton , M A 2020 , ' Carbon-nitrogen interactions in European forests and semi-natural vegetation - Part 2 : Untangling climatic, edaphic, management and nitrogen deposition effects on carbon sequestration potentials ' , Biogeosciences , vol. 17 , no. 6 , pp. 1621-1654 . https://doi.org/10.5194/bg-17-1621-2020
dc.identifier.other PURE: 135846827
dc.identifier.other PURE UUID: 3e3f2246-4da8-408a-8aaf-cfc394f1c14e
dc.identifier.other WOS: 000522159700002
dc.identifier.uri http://hdl.handle.net/10138/314496
dc.description.abstract The effects of atmospheric nitrogen deposition (N-dep) on carbon (C) sequestration in forests have often been assessed by relating differences in productivity to spatial variations of N-dep across a large geographic domain. These correlations generally suffer from covariation of other confounding variables related to climate and other growth-limiting factors, as well as large uncertainties in total (dry + wet) reactive nitrogen (N-r) deposition. We propose a methodology for untangling the effects of N-dep from those of meteorological variables, soil water retention capacity and stand age, using a mechanistic forest growth model in combination with eddy covariance CO2 exchange fluxes from a Europe-wide network of 22 forest flux towers. Total N-r deposition rates were estimated from local measurements as far as possible. The forest data were compared with data from natural or semi-natural, non-woody vegetation sites. The response of forest net ecosystem productivity to nitrogen deposition (dNEP/dN(dep)) was estimated after accounting for the effects on gross primary productivity (GPP) of the co-correlates by means of a meta-modelling standardization procedure, which resulted in a reduction by a factor of about 2 of the uncorrected, apparent dGPP/dN(dep) value. This model-enhanced analysis of the C and N-dep flux observations at the scale of the European network suggests a mean overall dNEP/dN(dep) response of forest lifetime C sequestration to N-dep of the order of 40-50 g C per g N, which is slightly larger but not significantly different from the range of estimates published in the most recent reviews. Importantly, patterns of gross primary and net ecosystem productivity versus N-dep were non-linear, with no further growth responses at high N-dep levels (N-dep > 2.5-3 gNm(-2) yr(-1)) but accompanied by increasingly large ecosystem N losses by leaching and gaseous emissions. The reduced increase in productivity per unit N deposited at high N-dep levels implies that the forecast increased N-r emissions and increased N-dep levels in large areas of Asia may not positively impact the continent's forest CO2 sink. The large level of unexplained variability in observed carbon sequestration efficiency (CSE) across sites further adds to the uncertainty in the dC/dN response. en
dc.format.extent 34
dc.language.iso eng
dc.relation.ispartof Biogeosciences
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject SOIL SOLUTION CHEMISTRY
dc.subject NET ECOSYSTEM EXCHANGE
dc.subject REACTIVE NITROGEN
dc.subject TERRESTRIAL ECOSYSTEMS
dc.subject ATMOSPHERIC DEPOSITION
dc.subject DRY DEPOSITION
dc.subject BOREAL FORESTS
dc.subject RESPIRATION
dc.subject CYCLE
dc.subject TEMPERATE
dc.subject 1172 Environmental sciences
dc.subject 4112 Forestry
dc.title Carbon-nitrogen interactions in European forests and semi-natural vegetation - Part 2 : Untangling climatic, edaphic, management and nitrogen deposition effects on carbon sequestration potentials en
dc.type Article
dc.contributor.organization Institute for Atmospheric and Earth System Research (INAR)
dc.contributor.organization Viikki Plant Science Centre (ViPS)
dc.contributor.organization Micrometeorology and biogeochemical cycles
dc.contributor.organization Ecosystem processes (INAR Forest Sciences)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.5194/bg-17-1621-2020
dc.relation.issn 1726-4170
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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