Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

Publications des scientifiques de l'IRD

Pansu Marc, Thuriès L. J. M., Soares V. F., Simoes M. L., Neto L. M. (2017). Modelling the transformation of organic materials in soil with nuclear magnetic resonance spectra. European Journal of Soil Science, 68 (1), 90-104. ISSN 1351-0754

Accès réservé (Intranet IRD) Document en accès réservé (Intranet IRD)

Lien direct chez l'éditeur doi:10.1111/ejss.12405

Titre
Modelling the transformation of organic materials in soil with nuclear magnetic resonance spectra
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000392814700012
AuteursPansu Marc, Thuriès L. J. M., Soares V. F., Simoes M. L., Neto L. M.
SourceEuropean Journal of Soil Science, 2017, 68 (1), p. 90-104. ISSN 1351-0754
RésuméChanges in the carbon (C) and nitrogen (N) compartments that result from the addition of organic material (OM) to the soil are predicted by the transformation of added OM (TAO) model with three parameters: very labile (P-L) and stable (P-S) fractions of the OM and the rate of remineralization (k(remin)) of nitrogen immobilized by microorganisms. We propose relations between P-L, P-S, k(remin) and various chemical groups in the OM identified by their C-13 nuclear magnetic resonance (NMR) spectra. The aromatic content increased the predicted P-S in accordance with published results. The O-aromatic content also increased P-S, but much less so than the aromatic content. The carboxyl content decreased P-S and increased P-L as in the TAO model based on infrared spectrometry. The carbonyl content decreased P-L, whereas di-O-alkyl increased P-L. The chemical composition of the population of decomposer organisms did not appear to be homeostatic, but was related rather to the composition of the substrate: k(remin) was positively correlated with the carboxyl and di-O-alkyl content and negatively correlated with the alkyl content. Solid state C-13 NMR spectroscopy gave better predictions of the transformations that resulted from adding OM than biochemical fractionation and near infrared reflectance spectrometry (NIRS). It is fast and non-destructive and provides new insights into the processes that control decomposition for research into waste recycling, agro-ecology and climate change. HighlightsLinking decomposition of organic materials in soil to NMR measurements. First mathematical model of decomposition based on NMR spectra. Stability of the OM depends on the chemical groups and the inorganic N supply. NMR is a promising tool for monitoring ecosystem changes and soil-air exchanges.
Plan de classementPédologie [068] ; Sciences fondamentales / Techniques d'analyse et de recherche [020]
LocalisationFonds IRD [F B010068928]
Identifiant IRDfdi:010068928
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010068928

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


Accès aux documents originaux :

Le FDI est labellisé CollEx

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Nouméa

Papeete

Niamey

Ouagadougou

Tunis

La Paz

Quito