Natural Fund Paper at 1:250,000 scale of Emilia-Romagna plain — Zinc [Zn]

It represents the distribution of zinc in the subsoil (90-140 cm deep) of the zinc 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 for the pedogeochemical content of Zn in the soils of the Emilia-Romagna plain it is mainly linked to the weaving of the soils, and secondly to the origin of the sediment (zinc-chlorite in the Po basin). The concentration values are obtained by the analytical method XRF (X-ray Fluorescence Spectrometry) in order to determine the total content.