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Purpose <p>To study and compare the transformation of the properties of reclamation horizons in the time series 4–8, 10–12 and 14–18 years in relation to natural soils to determine the dynamics of changes and identify the main trends in their development.</p> Methods <p>Background soils of Haplic Chernozems and urban soils of Urbic Technosols with Aτ horizon age 4–8, 10–12 and 14–18 years were studied. A total of 24 soil pits has been laid in the Rostov agglomeration. Soil morphology, structural condition, particle-size distribution (PSD), and various forms of carbon were studied. The data was analyzed using descriptive statistics and the Mann-Whitney criterion.</p> Results <p>It was found that the thickness of the Aτ horizons is on average 18.3 ± 12&#xa0;cm, and the content of anthropogenic inclusions does not exceed 4%. Over time, the structure of the Aτ has evolved: the proportion of large peds (&gt; 10&#xa0;mm) has decreased, and the content of small fractions has increased, indicating a gradual restoration of the soil structure. Carbonate content in the young Aτ horizons is above the background values but approaching the latter with age. The bulk density decreases as Aτ age from young to old. There is a significant decrease in total organic and water-soluble organic carbon content in the first 10–12 years after reclamation, with a subsequent trend towards recovery by 14–18 years.</p> Conclusions <p>The study showed that the properties of the Aτ horizons approach the background levels after 14–18 years, but some parameters, such as organic carbon content, remain lower.</p>

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Features of remediation horizons transformation in urban soil

  • 期刊论文

  • 发表日期：

    2026年2月28日

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  • Suleiman Tagiverdiev,
  • Sergey Gorbov,
  • Pavel Skripnikov,
  • Nadezhda Salnik,
  • Gennady Nosov,
  • Igor Terekhov,
  • Iman Gubaeva,
  • Maksim Kravchenko

摘要

Purpose

To study and compare the transformation of the properties of reclamation horizons in the time series 4–8, 10–12 and 14–18 years in relation to natural soils to determine the dynamics of changes and identify the main trends in their development.

Methods

Background soils of Haplic Chernozems and urban soils of Urbic Technosols with Aτ horizon age 4–8, 10–12 and 14–18 years were studied. A total of 24 soil pits has been laid in the Rostov agglomeration. Soil morphology, structural condition, particle-size distribution (PSD), and various forms of carbon were studied. The data was analyzed using descriptive statistics and the Mann-Whitney criterion.

Results

It was found that the thickness of the Aτ horizons is on average 18.3 ± 12 cm, and the content of anthropogenic inclusions does not exceed 4%. Over time, the structure of the Aτ has evolved: the proportion of large peds (> 10 mm) has decreased, and the content of small fractions has increased, indicating a gradual restoration of the soil structure. Carbonate content in the young Aτ horizons is above the background values but approaching the latter with age. The bulk density decreases as Aτ age from young to old. There is a significant decrease in total organic and water-soluble organic carbon content in the first 10–12 years after reclamation, with a subsequent trend towards recovery by 14–18 years.

Conclusions

The study showed that the properties of the Aτ horizons approach the background levels after 14–18 years, but some parameters, such as organic carbon content, remain lower.