1. Soil types of Aosta Valley (NW-Italy).
- Author
-
D'Amico, M. E., Pintaldi, E., Sapino, E., Colombo, N., Quaglino, E., Stanchi, S., Navillod, E., Rocco, R., and Freppaz, M.
- Subjects
- *
SOIL classification , *MAXIMUM likelihood statistics , *SOIL profiles , *VALLEYS , *SOIL mapping - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF