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Study of the trace metal ion influence on the turnover of soil organic matter in cultivated contaminated soils

Dumat, Camille and Quenea, Katelle and Bermond, Alain and Toinen, S. and Benedetti, Marc F. Study of the trace metal ion influence on the turnover of soil organic matter in cultivated contaminated soils. (2006) Environmental Pollution, 142 (3). 521-529. ISSN 0269-7491

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Official URL: http://dx.doi.org/10.1016/j.envpol.2005.10.027


The role of metals in the behaviour of soil organic matter (SOM) is not well documented. Therefore, we investigated the influence of metals (Pb, Zn, Cu and Cd) on the dynamic of SOM in contaminated soils where maize (C4 plant) replaced C3 cultures. Three pseudogley brown leached soil profiles under maize with a decreasing gradient in metals concentrations were sampled. On size fractions, stable carbon isotopic ratio (d13C), metals, organic carbon and nitrogen concentrations were measured in function of depth. The determined sequence for the amount of C4 organic matter in the bulk fractions: M3 (0.9) > M2 (0.4) > M1 (0.3) is in agreement with a significant influence of metals on the SOM turnover. New C4 SOM, mainly present in the labile coarser fractions and less contaminated by metals than the stabilised C3 SOM of the clay fraction, is more easily degraded by microorganisms

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Environmental Pollution website : http://www.sciencedirect.com/science/journal/02697491
HAL Id:hal-00481120
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Institut National Agronomique Paris - Grignon (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Université de Paris Diderot - Paris 7 (FRANCE)
Laboratory name:
Deposited On:06 May 2010 06:24

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