Article (Scientific journals)
Root exclusion through trenching does not affect the isotopic composition of soil CO2 efflux
Chemidlin Prevost-Boure, N.; Ngao, J.; Berveiller, D. et al.
2009In Plant and Soil, 319 (1-2), p. 1-13
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Keywords :
Natural abundance; Rainforest; Soil respiration; Stable carbon isotopes; Temperate forest; Trenched plot
Abstract :
[en] Disentangling the autotrophic and heterotrophic components of soil CO 2 efflux is critical to understanding the role of soil system in terrestrial carbon (C) cycling. In this study, we combined a stable C-isotope natural abundance approach with the trenched plot method to determine if root exclusion significantly affected the isotopic composition (δ 13C) of soil CO2 efflux (RS). This study was performed in different forest ecosystems: a tropical rainforest and two temperate broadleaved forests, where trenched plots had previously been installed. At each site, RS and its δ13C (δ13CRs) tended to be lower in trenched plots than in control plots. Contrary to RS, δ13CRs differences were not significant. This observation is consistent with the small differences in δ13C measured on organic matter from root, litter and soil. The lack of an effect on δ13CRs by root exclusion could be from the small difference in δ13C between autotrophic and heterotrophic soil respirations, but further investigations are needed because of potential artefacts associated with the root exclusion technique. © 2008 Springer Science+Business Media B.V.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Chemidlin Prevost-Boure, N.;  Laboratoire Ecologie Systématique et Evolution, CNRS, Univ Paris-Sud, Orsay, Paris F-75231, France
Ngao, J.;  Laboratoire Ecologie Systématique et Evolution, CNRS, Univ Paris-Sud, Orsay, Paris F-75231, France
Berveiller, D.;  Laboratoire Ecologie Systématique et Evolution, CNRS, Univ Paris-Sud, Orsay, Paris F-75231, France
Bonal, D.;  INRA, UMR Ecofog, French Guiana, BP 709, 97387 Kourou, Cedex, France
Damesin, C.;  Laboratoire Ecologie Systématique et Evolution, CNRS, Univ Paris-Sud, Orsay, Paris F-75231, France
Dufrêne, E.;  Laboratoire Ecologie Systématique et Evolution, CNRS, Univ Paris-Sud, Orsay, Paris F-75231, France
Lata, J.-C.;  Laboratoire Ecologie Systématique et Evolution, CNRS, Univ Paris-Sud, Orsay, Paris F-75231, France
Le Dantec, V.;  UMR CESBIO, Équipe Modélisation du Fonctionnement des Écosystèmes, BPI 2801, 31401 Toulouse, France
Longdoz, Bernard  ;  INRA, Ecologie et Ecophysiologie Forestière, Centre INRA Nancy, Champenoux, France
Ponton, S.;  INRA, UMR INRA UHP 1137 Ecologie et Ecophysiologie Forestière, Centre INRA Nancy, Champenoux F-54280, France, INRA, UMR Ecofog, French Guiana, BP 709, 97387 Kourou, Cedex, France
Soudani, K.;  Laboratoire Ecologie Systématique et Evolution, CNRS, Univ Paris-Sud, Orsay, Paris F-75231, France
Epron, D.;  Nancy Université, UMR INRA UHP 1137 Ecologie et Ecophysiologie Forestière, Université Henri Poincaré, Vandoeuvre-lès-Nancy, Cedex F-54506, France
Language :
English
Title :
Root exclusion through trenching does not affect the isotopic composition of soil CO2 efflux
Publication date :
2009
Journal title :
Plant and Soil
ISSN :
0032-079X
eISSN :
1573-5036
Publisher :
Springer, Dordrecht, Netherlands
Volume :
319
Issue :
1-2
Pages :
1-13
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 April 2017

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