Map of the Natural Fund on scale 1:250,000 of the Emilia-Romagna plain — Vanadio [V]

It represents the distribution of the area in the subsoil (90-140 cm deep) of the vanadium content in agricultural soils. This depth is considered representative of the natural background content (‘pedo-geochemical content’ according to ISO/DIS 19258, 2005). Cartographic units are represented by groups of polygons belonging to increasing concentration classes. The factors that regulate the natural content of metals in soils are: origin of the sediment in which the soil was formed, weaving, and evolutionary degree. As regards the pedogeochemical content of V in the soils of the Emilia-Romagna plain it is mainly linked to the weaving of the soils, to the origin of the organic substance, which will be further investigated. The concentration values are obtained by the analytical method XRF (X-ray Fluorescence Spectrometry) in order to determine the total content.