Article (Scientific journals)
Carbon isotopic signature of CO2 emitted by plant compartments and soil in two temperate deciduous forests
Maunoury-Danger, F.; Chemidlin Prevost Boure, N.; Ngao, J. et al.
2013In Annals of Forest Science, 70 (2), p. 173-183
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Keywords :
Beech forest; Carbon isotopic composition; CO2 efflux; Oak forest; Fagus
Abstract :
[en] • Context: The carbon isotope composition of the CO2 efflux (δ13CE) from ecosystem components is widely used to investigate carbon cycles and budgets at different ecosystem scales. δ13CE, was considered constant but is now known to vary along seasons. The seasonal variations have rarely been compared among different ecosystem components. • Aims: We aimed to characterise simultaneously the seasonal dynamics of δ13CE in different compartments of two temperate broadleaved forest ecosystems. • Methods: Using manual chambers and isotope ratio mass spectrometry, we recorded simultaneously δ13CE and δ13C of organic matter in sun leaves, current-year twigs, trunk bases and soil in an oak and a beech forest during 1 year. • Results: In the two forests, δ13CE displayed a larger variability in the tree components than in the soil. During the leafy period, a pronounced vertical zonation of δ13CE was observed between the top (sun leaves and twigs with higher values) and bottom (trunk and soil with lower values) of the ecosystem. No correlation was found between δ 13CE and δ13C of organic matter. Causes for these seasonal variations and the vertical zonation in isotope signature are discussed. • Conclusion: Our study shows clear differences in values as well as seasonal dynamics of δ13CE among different components in the two ecosystems. The temporal and local variation of δ13CE cannot be inferred from organic matter signature or CO2 emission rates. © 2012 INRA and Springer-Verlag France.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Maunoury-Danger, F.;  AgroPariTech, Ecologie Systématique et Evolution, Univ. Paris-Sud, Orsay 91405, France, Université de Lorraine, LIEBE, UMR 7146, Metz 57070, France
Chemidlin Prevost Boure, N.;  AgroPariTech, Ecologie Systématique et Evolution, Univ. Paris-Sud, Orsay 91405, France
Ngao, J.;  INRA, Écologie et Écophysiologie Forestières, UMR 1137, Champenoux 54280, France, INRA, Clermont Université Blaise Pascal, UMR 547 PIAF, 63100 Clermont-Ferrand, France
Berveiller, D.;  CNRS, UMR 8079, Ecologie Systématique et Evolution, Orsay 91405, France
Brechet, C.;  INRA, Écologie et Écophysiologie Forestières, UMR 1137, Champenoux 54280, France
Dufrene, E.;  CNRS, UMR 8079, Ecologie Systématique et Evolution, Orsay 91405, France
Epron, D.;  Écologie et Écophysiologie Forestières, UMR 1137, Université de Lorraine, Vandoeuvre 54506, France
Lata, J.-C.;  UMR 7618, Ecole Normale Supérieure, UPMC-Bioemco, 46 Rue d'Ulm, 75230 Paris Cedex 05, France
Longdoz, Bernard  ;  INRA, Écologie et Écophysiologie Forestières, Champenoux, France
Lelarge-Trouverie, C.;  UMR 8618, Institut de Biotechnologie des Plantes, Univ. Paris-Sud, Orsay 91405, France
Pontailler, J.-Y.;  CNRS, UMR 8079, Ecologie Systématique et Evolution, Orsay 91405, France
Soudani, K.;  AgroPariTech, Ecologie Systématique et Evolution, Univ. Paris-Sud, Orsay 91405, France
Damesin, C.;  AgroPariTech, Ecologie Systématique et Evolution, Univ. Paris-Sud, Orsay 91405, France
More authors (3 more) Less
Language :
English
Title :
Carbon isotopic signature of CO2 emitted by plant compartments and soil in two temperate deciduous forests
Publication date :
2013
Journal title :
Annals of Forest Science
ISSN :
1286-4560
eISSN :
1297-966X
Publisher :
Springer, Germany
Volume :
70
Issue :
2
Pages :
173-183
Peer reviewed :
Peer Reviewed verified by ORBi
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