The contact between soil and plant residues has a major effect on the fate of carbon in soil. In this study, we used published data on soil and plant residue incubations. Results showed that larger residues decomposed more slowly because it provides less surface area in contact with the soil. We tested two models with these data. The first was a si...
Five organic matters, three phosphate compounds, zerovalent iron grit (ZVIG, 2% by soil weight), two alkaline compounds, and two commercial formulations were incorporated, singly and some combined with ZVIG, into a highly Cu-contaminated topsoil (Soil P7, 2600 mg Cu kg−1) from a wood treatment facility. Formulations and two composts were also singl...
Les prairies participent à la régulation des cycles biogéochimiques, notamment par l'accumulation de la matière organique dans les sols, la séquestration de C atmosphérique et l'atténuation des risques d'entraînement d'azote vers les hydrosystèmes. Progresser dans la connaissance des fonctions et des flux de matières organiques sous prairies est es...
Dans les écosystèmes tropicaux de plantation à croissance rapide, la matière organique du sol (MOS) joue un rôle essentiel pour le maintien de la fertilité et la durabilité de la production. L'objectif principal de cette étude était de comprendre et de modéliser la dynamique de décomposition de la MOS sous plantation industrielle d'Eucalyptus, en r...
The influence of green waste, biowaste and paper–cardboard proportions in initial mixtures on organic matter (OM) evolution during composting in pilot-scale reactors was studied using respirometric procedure, humic substance extraction, crude fiber analysis and Fourier transform infrared spectroscopy. The stabilisation of OM during composting resul...
The species of an ectomycorrhizal (ECM) community were investigated in a temperate oak forest by morphotyping and ITS rDNA sequencing. Thirty-six ECM morphotypes were found at the site. The niche effect (as organic soil, mineral soil or dead woody debris artificially introduced in the soil) on the ECM community structure and on the potential catabo...
Ce rapport est relatif à la mise en place d'une expérimentation, consacrée à l'étude des mécanismes physico-chimiques (adsorption et transport de l'eau et des éléments nutritifs) sur quatre sols tropicaux dont un est un sol remanié par des vers de terre. Cette étude des différents types de sols a pour finalité d'adapter les apports d'intrants sur l...
The ectomycorrhizas (ECM) formed by Lactarius quietus, an ECM fungus specifically associated with Quercus spp., are abundant all the year long. Root and stem growth, beginning before bud break in oak, are strong carbon sinks partially fulfilled with carbohydrate reserves. We hypothesized that L. quietus contributes to providing trees with carbon at...
