Carbon-nitrogen interactions in European forests and semi-natural vegetation - Part 1 : Fluxes and budgets of carbon, nitrogen and greenhouse gases from ecosystem monitoring and modelling

Show simple item record Flechard, Chris R. Ibrom, Andreas Skiba, Ute M. de Vries, Wim van Oijen, Marcel Cameron, David R. Dise, Nancy B. Korhonen, Janne F. J. Buchmann, Nina Legout, Arnaud Simpson, David Sanz, Maria J. Aubinet, Marc Loustau, Denis Montagnani, Leonardo Neirynck, Johan Janssens, Ivan A. Pihlatie, Mari Kiese, Ralf Siemens, Jan Francez, Andre-Jean Augustin, Juergen Varlagin, Andrej Olejnik, Janusz Juszczak, Radoslaw Aurela, Mika Berveiller, Daniel Chojnicki, Bogdan H. Dammgen, Ulrich Delpierre, Nicolas Djuricic, Vesna Drewer, Julia Dufrene, Eric Eugster, Werner Fauvel, Yannick Fowler, David Frumau, Arnoud Granier, Andre Gross, Patrick Hamon, Yannick Helfter, Carole Hensen, Arjan Horvath, Laszlo Kitzler, Barbara Kruijt, Bart Kutsch, Werner L. Lobo-do-Vale, Raquel Lohila, Annalea Longdoz, Bernard Marek, Michal Matteucci, Giorgio Mitosinkova, Marta Moreaux, Virginie Neftel, Albrecht Ourcival, Jean-Marc Pilegaard, Kim Pita, Gabriel Sanz, Francisco Schjoerring, Jan K. Sebastia, Maria-Teresa Tang, Y. Sim Uggerud, Hilde Urbaniak, Marek van Dijk, Netty Vesala, Timo Vidic, Sonja Vincke, Caroline Weidinger, Tamas Zechmeister-Boltenstern, Sophie Butterbach-Bah, Klaus Nemitz, Eiko Sutton, Mark A. 2020-04-22T10:09:01Z 2020-04-22T10:09:01Z 2020-03-26
dc.identifier.citation Flechard , C R , Ibrom , A , Skiba , U M , de Vries , W , van Oijen , M , Cameron , D R , Dise , N B , Korhonen , J F J , Buchmann , N , Legout , A , Simpson , D , Sanz , M J , Aubinet , M , Loustau , D , Montagnani , L , Neirynck , J , Janssens , I A , Pihlatie , M , Kiese , R , Siemens , J , Francez , A-J , Augustin , J , Varlagin , A , Olejnik , J , Juszczak , R , Aurela , M , Berveiller , D , Chojnicki , B H , Dammgen , U , Delpierre , N , Djuricic , V , Drewer , J , Dufrene , E , Eugster , W , Fauvel , Y , Fowler , D , Frumau , A , Granier , A , Gross , P , Hamon , Y , Helfter , C , Hensen , A , Horvath , L , Kitzler , B , Kruijt , B , Kutsch , W L , Lobo-do-Vale , R , Lohila , A , Longdoz , B , Marek , M , Matteucci , G , Mitosinkova , M , Moreaux , V , Neftel , A , Ourcival , J-M , Pilegaard , K , Pita , G , Sanz , F , Schjoerring , J K , Sebastia , M-T , Tang , Y S , Uggerud , H , Urbaniak , M , van Dijk , N , Vesala , T , Vidic , S , Vincke , C , Weidinger , T , Zechmeister-Boltenstern , S , Butterbach-Bah , K , Nemitz , E & Sutton , M A 2020 , ' Carbon-nitrogen interactions in European forests and semi-natural vegetation - Part 1 : Fluxes and budgets of carbon, nitrogen and greenhouse gases from ecosystem monitoring and modelling ' , Biogeosciences , vol. 17 , no. 6 , pp. 1583-1620 .
dc.identifier.other PURE: 135779866
dc.identifier.other PURE UUID: 7f456792-bfad-4b08-a770-9d26ae5424bf
dc.identifier.other WOS: 000522159700001
dc.identifier.other ORCID: /0000-0002-2679-5556/work/72778069
dc.identifier.other ORCID: /0000-0001-6035-3949/work/72779680
dc.description.abstract The impact of atmospheric reactive nitrogen (N-r) deposition on carbon (C) sequestration in soils and biomass of unfertilized, natural, semi-natural and forest ecosystems has been much debated. Many previous results of this dC/dN response were based on changes in carbon stocks from periodical soil and ecosystem inventories, associated with estimates of N-r deposition obtained from large-scale chemical transport models. This study and a companion paper (Flechard et al., 2020) strive to reduce uncertainties of N effects on C sequestration by linking multi-annual gross and net ecosystem productivity estimates from 40 eddy covariance flux towers across Europe to local measurement-based estimates of dry and wet N-r deposition from a dedicated collocated monitoring network. To identify possible ecological drivers and processes affecting the interplay between C and N-r inputs and losses, these data were also combined with in situ flux measurements of NO, N2O and CH4 fluxes; soil NO3- leaching sampling; and results of soil incubation experiments for N and greenhouse gas (GHG) emissions, as well as surveys of available data from online databases and from the literature, together with forest ecosystem (BAS-FOR) modelling. Multi-year averages of net ecosystem productivity (NEP) in forests ranged from -70 to 826 gCm(-2) yr(-1) at total wet + dry inorganic N-r deposition rates (N-dep) of 0.3 to 4.3 gNm(-2) yr(-1) and from -4 to 361 g Cm-2 yr(-1) at N-dep rates of 0.1 to 3.1 gNm(-2) yr(-1) in short semi-natural vegetation (moorlands, wetlands and unfertilized extensively managed grasslands). The GHG budgets of the forests were strongly dominated by CO2 exchange, while CH4 and N2O exchange comprised a larger proportion of the GHG balance in short semi-natural vegetation. Uncertainties in elemental budgets were much larger for nitrogen than carbon, especially at sites with elevated N-dep where N-r leaching losses were also very large, and compounded by the lack of reliable data on organic nitrogen and N-2 losses by denitrification. Nitrogen losses in the form of NO, N2O and especially NO3- were on average 27%(range 6 %-54 %) of N-dep at sites with N-dep <1 gNm(-2) yr(-1) versus 65% (range 35 %-85 %) for N-dep > 3 gNm(-2) yr(-1). Such large levels of N-r loss likely indicate that different stages of N saturation occurred at a number of sites. The joint analysis of the C and N budgets provided further hints that N saturation could be detected in altered patterns of forest growth. Net ecosystem productivity increased with N-r deposition up to 2-2.5 gNm(-2) yr(-1), with large scatter associated with a wide range in carbon sequestration efficiency (CSE, defined as the NEP/GPP ratio). At elevated N-dep levels (> 2.5 gNm(-2) yr(-1)), where inorganic N-r losses were also increasingly large, NEP levelled off and then decreased. The apparent increase in NEP at low to intermediate N-dep levels was partly the result of geographical cross-correlations between N-dep and climate, indicating that the actual mean dC/dN response at individual sites was significantly lower than would be suggested by a simple, straightforward regression of NEP vs. N-dep. en
dc.format.extent 38
dc.language.iso eng
dc.relation.ispartof Biogeosciences
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject OXIDE FLUXES
dc.subject TREE GROWTH
dc.subject 1172 Environmental sciences
dc.subject 4112 Forestry
dc.title Carbon-nitrogen interactions in European forests and semi-natural vegetation - Part 1 : Fluxes and budgets of carbon, nitrogen and greenhouse gases from ecosystem monitoring and modelling en
dc.type Article
dc.contributor.organization Department of Agricultural Sciences
dc.contributor.organization Ecosystem processes (INAR Forest Sciences)
dc.contributor.organization Institute for Atmospheric and Earth System Research (INAR)
dc.contributor.organization Environmental Soil Science
dc.contributor.organization Viikki Plant Science Centre (ViPS)
dc.contributor.organization Methane and nitrous oxide exchange of forests
dc.contributor.organization INAR Physics
dc.contributor.organization Micrometeorology and biogeochemical cycles
dc.description.reviewstatus Peer reviewed
dc.relation.issn 1726-4170
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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