| Record |
Author  |
Prevost-Boure, N.C.; Ngao, J.; Berveiller, D.; Bonal, D.; Damesin, C.; Dufrene, E.; Lata, J.C.; Le Dantec, V.; Longdoz, B.; Ponton, S.; Soudani, K.; Epron, D. |
| Title |
Root exclusion through trenching does not affect the isotopic composition of soil CO2 efflux |
Type |
Journal Article |
| Year |
2009 |
Publication |
Plant and Soil |
Abbreviated Journal |
Plant Soil |
| Volume |
319 |
Issue |
1-2 |
Pages |
1-13 |
| Keywords |
Stable carbon isotopes; Natural abundance; Soil respiration; Trenched plot; Rainforest; Temperate forest |
| Abstract |
Disentangling the autotrophic and heterotrophic components of soil CO2 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 (delta C-13) of soil CO2 efflux (R-S). 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, R-S and its delta C-13 (delta C-13(Rs)) tended to be lower in trenched plots than in control plots. Contrary to R-S, delta C-13(Rs) differences were not significant. This observation is consistent with the small differences in delta C-13 measured on organic matter from root, litter and soil. The lack of an effect on delta C-13(Rs) by root exclusion could be from the small difference in delta C-13 between autotrophic and heterotrophic soil respirations, but further investigations are needed because of potential artefacts associated with the root exclusion technique. |
| Address |
[Prevost-Boure, Nicolas Chemidlin; Berveiller, Daniel; Damesin, Claire; Dufrene, Eric; Lata, Jean-Christophe; Soudani, Kamel] Univ Paris Sud, Lab Ecol Systemat & Evolut, AgroParisTech, CNRS,UMR 8079, F-75231 Paris, France, Email: nicolas.chemidlin-prevost-boure@u-psud.fr |
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SPRINGER |
Place of Publication |
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Edition |
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| ISSN |
0032-079X |
ISBN |
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| Notes |
ISI:000266143400001 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
203 |
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