Summary
Decomposition studies with humic acids (HAs) present in HA-clay complexes revealed that such decomposition decreases at higher clay concentrations. At high clay concentration, moreover, it has also been observed that smaller and more flexible humic molecules are less susceptible to the said decomposition as compared to larger and more rigid structures.
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Varadachari, C., Biswas, N.K. & Ghosh, K. Studies on decomposition of humus in clay-humus complexes. Plant Soil 78, 295–300 (1984). https://doi.org/10.1007/BF02450363
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DOI: https://doi.org/10.1007/BF02450363