Exploitation statistique d’une mesure de résistivité électrique apparente pour l’aide à la cartographie des sols 1, 2, # 1 1 2Julien MOEYS , Bernard NICOULLAUD , Abel DORIGNY , Yves COQUET & 1Isabelle COUSIN 1. INRA, Unité de Science du Sol, Avenue de la Pomme de Pin, BP 20619. 45166 Ardon Cedex 2. UMR INRA/INA-PG Environnement et Grandes Cultures. INA-PG, centre de Grignon, BP 01, 78850 Thiverval–Grignon #. Correspondant : Julien.Moeys@grignon.inra.fr Abstract This study presents the join analysis of soil observations with auger holes and quasi-continuous apparent resistivity measurements along transects on a 22.5 ha plot. We have shown that it was possible to establish correlation and linear regression between electrical resistivity and soil depth or the thickness of the clayey layer. The ranking of soil properties given their influence on soil electrical resistivity varies with the inter-electrode spacing of the electrical resistivity measurements. If buhrstone and/or limestone content and limestone depth st ndrank respectively 1 and 2 with 0.5 and 1 m inter-electrode spacing, the thickness of clayey layer appears to be most influent with the 2 m spacing. Stone content and limrd ndrank respectively 3 and 2 . These results show that it is possible to correlate electrical resistivity measures with quantitative and quantitative field observations of soil properties and then to improve delineation of soil map units. Contexte & ...