Aerogeophysical Data to Modeling Soil Properties: A Study Case in Bom Jardim—RJ

Aerogeophysical data is becoming an important source of environmental covariates in digital mapping. Airborne gamma-ray spectrometry is more common in digital soil mapping, because of its relationship with weathering and pedogenesis processes. The airborne magnetic method is less frequent, and is applied mostly in geological, structural, and hydrological studies. Therefore, the objective of this work was to implement a preliminary study to model the spatial distribution of soil properties (Base Sum (BS), Base Saturation (BSat), Aluminum content (Al), and Aluminum Saturation (AlSat)) using pedological legacy data, terrain covariates from DEM, Sentinel-2 images, and aero geophysical data to discuss their importance to the digital soil mapping in Bom Jardim county, Rio de Janeiro, Brazil.