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Article
Effect of elevated CO2 on carbon and nitrogen distribution within a tree (Castanea sativa Mill.) — soil system
Two-year-old sweet chestnut trees were grown outside in normal or double CO2 atmospheric concentration. In spring and in autumn of two growing seasons, a six day labelling pulse of14C labelled CO2 was used to fol...
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Atmospheric Co2Increase and Plant Material Quality: Production, Nitrogen Allocation and Litter Decomposition of Sweet Chestnut
Two-year-old sweet chestnut trees were grown for two other years in a doubled CO2 atmosphere. The result was an increase by 20% of the net production and, as an effect of dilution, a decrease of the nitrogen conc...
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Article
Native carbon mineralization of an acid organic soil after use of the chloroform-fumigation method to estimate microbial biomass
Two experiments were carried out on a dysmoder humus sampled from a depth of 2–5 cm from a mixed hardwood forest. In acid soil, the chloroform fumigation-incubation method failed to estimate the microbial biom...
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Article
Effet des racines vivantes sur la decomposition d’une litiere racinaire marquee au14C
Du blé est marqué au14C sur sol dans des pots de culture depuis la germination jusqu’à la maturité dans une enceinte à teneur de CO2 et14CO2. La répartition du14C entre les parties aériennes, les racines et le so...