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<b>Abstract</b>— <p>The relationship between carbon distribution in the peat of an oligotrophic bog and the physicochemical properties and mineral composition of the peat is considered. The peat deposit has a high moisture capacity at depths of 0–0.5 m and 4.0–5.0 m. The carbon content of the peat is 59.5% in the transitional (mesotrophic) peat layer (3.0–3.5 m) and 57.8% in the eutrophic peat layer (5.0–5.5 m) with the degree of peat decomposition of more than 30%. Content of humic acids reaches 18.1% in the transitional part of the peat deposit (1.5–2.0 m) and decreases by two–four times in the lower horizons. The high exchange and sorption capacity of humic acids is typical of the peat layer at a depth of 1.5–3.5 m. The distribution of micro- and macroelements in the peat has been studied using the scanning electron microscopy. At the depths of 1.0–3.5 and 5.0–6.5 m, the peat deposit contains a considerable admixture of the mineral matter. The amount of functional groups of humic acids and the distribution of Al, Si, and Fe in the peat profile are closely related.</p>

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Geochemical Features and Carbon Pools of Oligotrophic Bog

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • E. V. Linkevich,
  • E. N. Gulyaeva,
  • O. L. Kuznetsov,
  • L. A. Efimova,
  • V. M. Prokopyuk

摘要

Abstract—

The relationship between carbon distribution in the peat of an oligotrophic bog and the physicochemical properties and mineral composition of the peat is considered. The peat deposit has a high moisture capacity at depths of 0–0.5 m and 4.0–5.0 m. The carbon content of the peat is 59.5% in the transitional (mesotrophic) peat layer (3.0–3.5 m) and 57.8% in the eutrophic peat layer (5.0–5.5 m) with the degree of peat decomposition of more than 30%. Content of humic acids reaches 18.1% in the transitional part of the peat deposit (1.5–2.0 m) and decreases by two–four times in the lower horizons. The high exchange and sorption capacity of humic acids is typical of the peat layer at a depth of 1.5–3.5 m. The distribution of micro- and macroelements in the peat has been studied using the scanning electron microscopy. At the depths of 1.0–3.5 and 5.0–6.5 m, the peat deposit contains a considerable admixture of the mineral matter. The amount of functional groups of humic acids and the distribution of Al, Si, and Fe in the peat profile are closely related.