1. Variation du carbone organique en fonction des propriétés des sols et de l'altitude dans le Jura (France)
- Author
-
Yvette Tavant, S. Bruckert, and Hubert Tavant
- Subjects
Total organic carbon ,Soil Science ,chemistry.chemical_element ,Mineralogy ,Calcium ,Silt ,complex mixtures ,chemistry ,Loam ,Environmental chemistry ,Clastic rock ,Soil water ,Cation-exchange capacity ,Saturation (chemistry) - Abstract
From 71 forest soils classified as leached brown soils, brown calcic soils and humocalcic soils, the relationships were studied between the organic carbon and the variables: exchangeable calcium, cation exchange capacity, saturation level, pH, clay and silt content and elevation. The variables were selected from correlation coefficients and principal components analysis and multiple regressions. Exchangeable calcium explained 77% of the organic carbon variation. The saturation ratio and elevation explained 5,9 and 1,1% of the variation. The high dependence of organic carbon on calcium probably resulted from organo-metallic complexation and the protective effect of calcium against microbial degradations.
- Published
- 1994
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