Maps of chemical-physical properties – pH values in regional soils – layer 0-30 cm

Soil pH is a fundamental property that can influence many physical, chemical and biological processes. It regulates the availability of many nutrients for plants, influences the activity of microorganisms responsible for the decomposition of organic matter and most of the chemical transformations that take place in the soil, has a decisive role in influencing mobility and therefore the bioavailability of heavy metals. In addition, some physical characteristics of the soil such as permeability, stability of aggregates, degree of compaction and dispersion of clay are influenced by pH. The paper represents the area distribution in the soils of the Emilia-Romagna region of the pH value in the surface layer (0-30 cm). The map was processed from the data extrapolated from the Land Database of the Emilia-Romagna Region for the period 1974-2022.