ON THE ORGANIC CARBON CONTENT IN UNDERWATER SOILS OF BUKHTA TROITSY (SEA OF JAPAN)
2021
Polokhin O.V. (Federal Scientific Center of the East Asia Terrestrial BiodiversityFar Eastern Branch of the Russian Academy of Sciences) | Makarevich R.A. (The Pacific Geographical Institute of the Far Eastern Branch of the Russian Academy of Sciences) | Klyshevskaya S.V. (Federal Scientific Center of the East Asia Terrestrial BiodiversityFar Eastern Branch of the Russian Academy of Sciences)
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 soilsformed 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 ofunderwater marine soils is the high content of non-hydrolyzable residue. The ratio of the carbon content of humic acids to thecarbon content of fulvic acids indicates that the type of humus in all classes of underwater soils is humate. The study of thecontent and qualitative composition of organic carbon in marine soils contributes to solving both fundamental problems of soilscience (classification of underwater marine soils) and applied problems (establishment of the ecological state of underwaterlandscapes).
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