Home – Home – Jornals – Geography and Natural Resources 2020 number 3

The chemical (macro and trace element) composition of the waters of eutrophic and mesotrophic swamps and rivers is pro vided, based on of expedition investigations on the territory of the Northern, Central and Southeastern Altai. An increased content of a number of elements was observed, which is determined by the botanical composition of peats as well as underlying rocks. Special features in the formation of the composition of swamp waters in peat deposits of a different genesis are determined; the influence of swamps on the hydrochemical regime of surface waters are identified. A dependence of the hydrochemical composition of swamp rivers on swamp waters is confirmed, which is manifested in the content of humic acids. It was found that a change in the amount of humic and fulvic acids indicates the dynamism of their input from the peat deposit to the swamp waters as well as a higher content of humic acids in the waters of mountain swamps in comparison with the swamps of the West Siberian plain. It is shown that in the swamp waters of the Northern Altai there is an increased content of a number of elements, which has a sig nificant impact on the hydrochemical regime of intra-swampy rivers. In the Central Altai, there is an increase in mineralization of swamp waters due to a predominance of shallow swamps and the close occurrence of underlying rocks. It was determined that there is no accumulation of chemical elements in the swamp waters and in intra-swamp rivers of the Southeastern Altai, but an increased content of humic acids was determined. The content of trace elements does not exceed the value of maximum permis sible concentrations, which indicates that there is no input of man-made substances to the swamps of the territory of Altai. It is proposed to evaluate the elemental composition of swamp waters that has formed as a background composition to date.