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Abstract <p>A scheme for the subdivision of soil organic matter (SOM) into structural, process-related, and functional pools has been developed. Particulate organic matter (C<sub>POM</sub>) and mineral-associated organic matter (C<sub>MAOM</sub>) referred to the SOM structural pool group contain, on average, 28 and 70% of total soil organic carbon (C<sub>org</sub>), respectively. The carbon content is 4.6, 1.4, and 81% in the process-related pools of potentially mineralizable organic matter (C<sub>PM</sub>), microbial biomass (C<sub>MB</sub>), and chemically oxidizable organic matter (C<sub>OX</sub>), respectively. The structural and process-related carbon pools correlate with each other and with C<sub>org</sub> in terms of size. Three functional SOM pools (active, slow, and passive) contain approximately 5, 76, and 19%&#xa0;C<sub>org</sub>, respectively.</p>

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Soil Organic Carbon Pools: Isolation Methods, Sizes, and Ratios

  • 期刊论文

  • 发表日期：

    2025年9月5日

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  • V. M. Semenov,
  • T. N. Lebedeva,
  • D. A. Sokolov,
  • N. B. Zinyakova,
  • V. N. Kudeyarov

摘要

Abstract

A scheme for the subdivision of soil organic matter (SOM) into structural, process-related, and functional pools has been developed. Particulate organic matter (CPOM) and mineral-associated organic matter (CMAOM) referred to the SOM structural pool group contain, on average, 28 and 70% of total soil organic carbon (Corg), respectively. The carbon content is 4.6, 1.4, and 81% in the process-related pools of potentially mineralizable organic matter (CPM), microbial biomass (CMB), and chemically oxidizable organic matter (COX), respectively. The structural and process-related carbon pools correlate with each other and with Corg in terms of size. Three functional SOM pools (active, slow, and passive) contain approximately 5, 76, and 19% Corg, respectively.