IMPROVING TOPSOIL CARBON STORAGE PREDICTION USING A DIGITAL ELEVATION MODEL IN TEMPERATE FOREST SOILS OF FRANCE

Spatial distributions of C pools in forest soils are difficult to estimate because of their inherent spatial variability and because of lack of reliable data (C concentration and bulk density down to a sufficient depth). In southwest France, thick humic acid soils have developed from Quaternary silty alluvial deposits. Previous studies have shown that these soils have accumulated large amounts of organic C (OC) and that the regional distribution...