Article (Scientific journals)
Spatial variability of soil CO 2 efflux linked to soil parameters and ecosystem characteristics in a temperate beech forest
Ngao, J.; Epron, D.; Delpierre, N. et al.
2012In Agricultural and Forest Meteorology, 154-155, p. 136-146
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Keywords :
Ecosystem respiration; Soil bulk density; Soil C/N ratio; Soil CO 2 efflux; Spatial variability; Europe; Fagus; Fagus sylvatica
Abstract :
[en] The aim of this study was to determine the amplitude and the driving factors of the spatial variability in soil CO 2 efflux in a young European beech forest. Soil CO 2 efflux was measured in 2003 and 2004 in seven beech plots differing in terms of soil type and leaf area index. After eliminating temporal fluctuations due to soil temperature and soil water content, standardized soil CO 2 efflux varied significantly among plots over a large range given the homogeneity of the land cover type. Correlation analyses revealed that this spatial variability could not be explained by root biomass, litter C content, soil C contents, stand basal area or stem density. Conversely, very significant correlations were found with topsoil bulk density, superficial soil C/N ratio, and leaf area index. Multiple regression analysis led to a model relating standardized soil CO 2 efflux to C/N ratio and topsoil bulk density, thus explaining 87% of observed inter-plot spatial variability. This study highlighted the need to consider spatially varying soil factors such as C/N ratio and bulk density when experimental schemes are elaborated to estimate mean soil CO 2 efflux at forest scale. © 2011 Elsevier B.V.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Ngao, J.;  INRA, UMR 1137 Ecologie et Ecophysiologie Forestières, Centre de Nancy, F-54280 Champenoux, France, Université Henri Poincaré Nancy 1, UMR 1137 Ecologie et Ecophysiologie Forestières, F-54506 Vandoeuvre-les-Nancy Cedex, France
Epron, D.;  INRA, UMR 1137 Ecologie et Ecophysiologie Forestières, Centre de Nancy, F-54280 Champenoux, France, Université Henri Poincaré Nancy 1, UMR 1137 Ecologie et Ecophysiologie Forestières, F-54506 Vandoeuvre-les-Nancy Cedex, France
Delpierre, N.;  Université Paris-Sud, UMR 8079 Ecologie Systématique et Evolution, Orsay F-91405, France
Bréda, N.;  INRA, UMR 1137 Ecologie et Ecophysiologie Forestières, Centre de Nancy, F-54280 Champenoux, France, Université Henri Poincaré Nancy 1, UMR 1137 Ecologie et Ecophysiologie Forestières, F-54506 Vandoeuvre-les-Nancy Cedex, France
Granier, A.;  INRA, UMR 1137 Ecologie et Ecophysiologie Forestières, Centre de Nancy, F-54280 Champenoux, France, Université Henri Poincaré Nancy 1, UMR 1137 Ecologie et Ecophysiologie Forestières, F-54506 Vandoeuvre-les-Nancy Cedex, France
Longdoz, Bernard  ;  INRA, Ecologie et Ecophysiologie Forestières, Centre de Nancy, Champenoux, France et Université Paris-Sud, Ecologie Systématique et Evolution, Orsay, France
Language :
English
Title :
Spatial variability of soil CO 2 efflux linked to soil parameters and ecosystem characteristics in a temperate beech forest
Publication date :
2012
Journal title :
Agricultural and Forest Meteorology
ISSN :
0168-1923
eISSN :
1873-2240
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
154-155
Pages :
X136-146
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 April 2017

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