Polokhin O.V., Makarevich R.A., Klyshevskaya S.V.
International research journal 2021; (2): 94-98
The article presents the results of a study of the organic carbon content in the underwater marine soils of Bukhta Troitsy (Peter the Great Gulf, Sea of Japan). The authors establish that the highest content of organic carbon is observed in soils formed under thickets of sea grasses (organobiogenic paddy soils) and soils of deep-water parts of the water area (cryptobiogenic paddy soils). It is shown that the specificity of the qualitative composition of the total organic carbon of underwater marine soils is the high content of non-hydrolyzable residue. The ratio of the carbon content of humic acids to the carbon content of fulvic acids indicates that the type of humus in all classes of underwater soils is humate. The study of the content and qualitative composition of organic carbon in marine soils contributes to solving both fundamental problems of soil science (classification of underwater marine soils) and applied problems (establishment of the ecological state of underwater landscapes).
