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<b>Abstract</b>— <p>The relevance of studying carbon dynamics in the soils of coastal ecosystems in the Russian Arctic is determined by high sensitivity of soils to climatic changes and anthropogenic impact. As a result of the research, CO<sub>2</sub> emissions from the soils of coastal ecosystems (Stagnosols, Tidalic Arenosols, Tidalic Cryosols (Fluvic), Cryosols (Arenic), and Cryic Histosols) on the southwestern coast of the Kara Sea were assessed for the first time. The soils of the Kara Sea coasts are characterized by low CO<sub>2</sub> emission (1.35 ± 0.10 g C/(m<sup>2</sup> day), June–July 2025). CO<sub>2</sub> emission values ranged from –0.35 to 8.76 g C/(m<sup>2</sup> day) and were significantly lower than those from the soils of marshes in the White and Barents Seas during the peak of the growing season. CO<sub>2</sub> emissions from the soils display high spatial variability, which is associated with the mosaic pattern and heterogeneity of coastal ecosystems. The obtained data will be applicable for assessing the contribution of coastal ecosystems soils of the southwestern Kara Sea to global greenhouse gas emissions.</p>

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Carbon Dioxide Emission from Soils of Coastal Ecosystems in the South-West of Kara Sea

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • A. A. Bobrik,
  • G. A. Kazhukalo,
  • I. E. Bagdasarov,
  • A. V. Pryadilina,
  • E. N. Terebova,
  • M. A. Pavlova,
  • S. A. Ogorodov,
  • P. V. Krasilnikov

摘要

Abstract—

The relevance of studying carbon dynamics in the soils of coastal ecosystems in the Russian Arctic is determined by high sensitivity of soils to climatic changes and anthropogenic impact. As a result of the research, CO2 emissions from the soils of coastal ecosystems (Stagnosols, Tidalic Arenosols, Tidalic Cryosols (Fluvic), Cryosols (Arenic), and Cryic Histosols) on the southwestern coast of the Kara Sea were assessed for the first time. The soils of the Kara Sea coasts are characterized by low CO2 emission (1.35 ± 0.10 g C/(m2 day), June–July 2025). CO2 emission values ranged from –0.35 to 8.76 g C/(m2 day) and were significantly lower than those from the soils of marshes in the White and Barents Seas during the peak of the growing season. CO2 emissions from the soils display high spatial variability, which is associated with the mosaic pattern and heterogeneity of coastal ecosystems. The obtained data will be applicable for assessing the contribution of coastal ecosystems soils of the southwestern Kara Sea to global greenhouse gas emissions.