English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

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 specifi c diagnostic horizon that represents stages of specifi c urban synlitogenic soil formation on thick human-made deposits, we face the problem of separating truly soil horizons from layers of man-made deposits, as both contain signifi cant amounts of artefacts. 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, Russia. Their morphological descriptions were accompanied 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 profi les had signifi cant contents of solid inclusions (domestic waste and building rubble) that allowed us to defi ne them as Urbic Technosols, according to the WRB soil classifi cation system. It was confi rmed that, in addition to specifi c chemical and morphological properties, man-made urban soils had specifi c physical characteristics. The abundance of inclusions of building rubble and domestic waste had a strong infl uence on physical properties such as bulk density and saturated hydraulic conductivity. Heterogeneous distribution of such properties within urban soil profi les could be considered as their characteristic feature. As a result, this study confi rmed the identifi cation of certain diagnostic horizons by establishing statistically signifi cant differences in their bulk densities and saturated hydraulic conductivity. Penetration resistance was shown to be a less informative parameter in this study. We believe that more data on physical properties of different types of horizons should be accumulated for making it possible to establish typical values of physical characteristics of such horizons. Keywords

Morphological and physical properties in diagnostics of urban soils: case study from Moscow, Russia