Soil types of Aosta Valley (NW-Italy)

M. E. D’Amico, E. Pintaldi, E. Sapino, N. Colombo, E. Quaglino, S. Stanchi, E. Navillod, R. Rocco and M. Freppaz

Journal of Maps, 2020, vol. 16, issue 2, 755-765

Abstract: The first soil map of the whole Aosta Valley Region was produced at the 1:100,000 scale. We used 691 soil profiles, attributed to 16 Cartographic (soil) Units, spatialized using a Maximum Likelihood Estimation model available in ArcGIS software. Six maps were used as base layers, representing the most important soil-forming factors: parent material, vegetation/land use, mean annual precipitation, elevation, absolute aspect and slope angle. The Maximum Likelihood Estimation was followed by an expert-based check that led to a re-assignment of some wrongly attributed cartographic polygons. The validation process revealed that the User’s and Producer’s Accuracies were rather high (between 47.5% and 84.4% for common soil types). A particularly high pedodiversity, associated to strong geological, vegetational and climatic gradients was observed.

Date: 2020
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DOI: 10.1080/17445647.2020.1821803

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