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.本数据集展示了农业土壤底土层（90~140cm深度）中锌含量的空间分布特征。该深度被视作土壤自然背景含量的代表性区间——依据ISO/DIS 19258（2005）标准，此背景含量的定义为土壤地球化学含量（pedo-geochemical content）。制图单元由归属于浓度递增等级的多边形群组构成。调控土壤中金属自然含量的因素包括：成土母质的来源、土壤结构以及土壤发育程度。针对艾米利亚-罗马涅平原土壤中的锌土壤地球化学含量，其主要与土壤结构相关，其次则与成土母质来源有关（波河盆地中的锌绿泥石矿物）。本次浓度数值通过X射线荧光光谱法（X-ray Fluorescence Spectrometry，简称XRF）分析获取，用于测定土壤锌的全量含量。