Morphological and physical properties in diagnostics of urban soils (case study in Moscow)

Prokof'eva, T.; Umarova, A.; Bykova, G.; Suslenkova, M.; Ezhelev, Z.; Kokoreva, A.; Gasina, A.; Martynenko, I.

Авторы: Prokof'eva T., Umarova A., Bykova G., Suslenkova M., Ezhelev Z., Kokoreva A., Gasina A., Martynenko I.
Журнал: Soil Science Annual
Том: 71
Номер: 4
Год издания: 2020
Издательство: Walter de Gruyter
Местоположение издательства: Berlin, Germany
Первая страница: 309
Последняя страница: 320
DOI: 10.37501/soilsa/131598
Аннотация: The whole complex of soil properties formed during a long process of evolution is used in soil diagnostics. Following the genetic approach, which proposes the designation of a specific synlitogenic diagnostic horizon that represents stages of specific urban synlitogenic soil formation on thick man-made urban man-made deposits, we face the problem of separating truly soil horizons from layers of man-made deposits, as both contain significant amounts of artifacts. In addition, they have similar chemical and physical-chemical properties corresponding to general geochemical characteristics of the urban environment. A comparative analysis of morphological and physical characteristics was conducted for several soils of loamy texture within the city of Moscow. Their morphological descriptions in field were further supplemented by determinations of bulk density, saturated hydraulic conductivity and penetration resistance. For the analysis of morphological and physical properties, soil diagnostic horizons were arranged in four groups (synlithogenic urbic humus horizons, postlithogenic humus horizons, technogenic layers and horizons inherited from natural texturally-differentiated soils).Most of the studied soil profiles had significant contents of solid 35 inclusions (domestic waste and building rubble) that allowed us to define them as Urbic Technosols, according to the international soil classification system.It was confirmed that, in addition to specific chemical and morphological properties, man-made urban soils had specific physical characteristics. The abundance of inclusions of building rubble and domestic waste had a strong influence of physical properties such as bulk density and saturated hydraulic conductivity. Heterogeneous distribution of such properties within urban soil profiles could be considered as their characteristic feature. As a result, this study confirmed the identification of certain diagnostic horizons by establishing statistically significant differences in their bulk densities and saturated hydraulic conductivity. Penetration resistance was shown to be a less informative parameter in thisstudy. We believe that more data on physical properties of different types of horizons shouldbe accumulated for making it possible to establish typical values of physical characteristics ofsuch horizons.
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Morphological and physical properties in diagnostics of urban soils (case study in Moscow)статья

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