Pedological characteristics of artificialized soils: A snapshot
Abstract
The onset of industrialization entailed the increase in soil artificialization worldwide. Soils from artificialized zones (SAZ) are the result of urban, industrial, traffic, mining or recreational land use. Knowledge of their characteristics is a prerequisite for evaluating the ability of SAZ to perform key functions and provide soil ecosystem services. Based on a selection of 102 papers published between 1991 and 2017, this article aims at providing a quantitative vision of the pedological characteristics of the different categories of SAZs as a function of the land use and soil type (natural profile, soil developed on allochthonous material). We show that, overall, the inherent characteristics of SAZ topsoil generally depend on the soil type - soil of allochthonous material being more stony and poorer in the < 2 mu m fraction - while manageable characteristics are a function of both the soil type and the land use, with the exception of pH that is mainly driven by the land use. However, a good characterization of SAZs requires a more systematic description, sampling and analysis to obtain comprehensive knowledge of their characteristics as several features are still too rarely measured such as cationic exchange capacity, electrical conductivity, soil depth, and nutrient concentrations. Sealed soils are still too rarely considered despite their large surface area. Such a characterization would allow a better management of the ecosystem services that SAZs fulfill.