Map of the natural background at 1:250,000 scale of the Emilia-Romagna plain - Zinc [Zn]

It represents the area distribution in the subsoil (90-140 cm deep) of the zinc content in soils for agricultural use. This depth is considered representative of the natural background content ('pedo-geochemical content' according to ISO/DIS 19258, 2005). The cartographic units are represented by groups of polygons belonging to classes of increasing concentration. Factors that regulate the natural content of metals in soils are: origin of the sediment in which the soil was formed, texture, and evolutionary degree. As for the pedogeochemical content of Zn in the soils of the Emilia-Romagna plain, it is mainly linked to the texture of the soils, and secondarily to the origin of the sediment (zinc-chlorite in the Po basin). Concentration values are obtained by the XRF (X-ray Fluorescence Spectrometry) analytical method in order to determine the total content.本数据集展示了农用土壤中锌含量在90~140厘米深亚土层内的面积分布情况。该深度被视为自然背景含量的代表性深度，符合ISO/DIS 19258（2005）标准定义的土壤地球化学含量（pedo-geochemical content）。制图单元由按浓度递增分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：成土母质来源、土壤质地以及土壤演化程度。针对艾米利亚-罗马涅平原土壤中的锌土壤地球化学含量而言，其主要与土壤质地相关，次要关联因素为成土母质来源（波河盆地中的锌绿泥石）。浓度数值通过X射线荧光光谱法（X-ray Fluorescence Spectrometry，XRF）获取，用于测定土壤锌的总含量。