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.

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, M. Freppaz. - In: JOURNAL OF MAPS. - ISSN 1744-5647. - 16:2(2020 Oct 19), pp. 755-765. [10.1080/17445647.2020.1821803]

Soil types of Aosta Valley (NW-Italy)

M.E. D’Amico
Primo
;
M. Freppaz
2020

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.
Alps; Maximum Likelihood Estimation; pedodiversity; soil types; Aosta Valley
Settore AGR/14 - Pedologia
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/873372
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