0000000000768712
AUTHOR
Paul N. Nelson
13C differentiation of dissolved organic carbon pool during carbon mineralization in soil from a native deciduous forest and a coniferous plantation
International audience
Différenciation isotopique (13C) du carbone organique dissous (COD) au cours de la dégradation des matières organiques dans les sols forestiers : influence de la végétation
National audience
Isotopic Differentiation (13C) of Dissolved Organic Carbon and CO2 During Organic Matter Degradation in Forest Soils: Influence of Vegetation
International audience
Effect of temperature on soil microbial structure and fractionation during C mineralisation
International audience; Microbial carbon mineralization in soils leads to the production of different gaseous or dissolved components that have environmental impacts. Our study deals with the influence of soil temperature on the production of gaseous and dissolved carbon components during carbon mineralization in forest soils in France. After an incubation of soil samples for 42 days at 4 different temperatures, we determined both size and 13C isotopic signature of dissolved organic carbon and CO2 pools. We also characterised the soil microbial community structure (PLFA profiles). While temperature clearly increases the CO2 production, a low decrease of the dissolved organic carbon pool was…