Biochemical Factors Controlling the Composition of Bog Water and Migration of Substances in the System of Geochemically Conjugated Landscapes of Oligotrofic Bogsстатья
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 июня 2021 г.
Аннотация:Mire ecosystems in Western Siberia play a significant role in the environment and sustain ecological balance in the biosphere. The aim of the research was to study the chemical and biological processes of mire pedogenesis and its influence on the formation of the composition of mire water and its migration to surface waters. The research was carried out in the southern taiga zone of Western Siberia in a small catchment of the Klyuch River within a catena on a landscape profile (Catena) within the linked landscapes of oligotrophic swamps. The crossing autonomous, transitional, and accumulative geomorphic positions. The chemical composition of mire water and the chemical and microbiological properties of the peat soils were studied in each position. It was shown that a predominance of certain plant associations (oligotrophic sphagnum, cotton grass, or sedges) causes the accumulation of organic matter of significantly different chemical compositions. The biochemical activity could be traced throughout the peat profiles; it significantly affected the formation of the chemical composition of mire waters. In each landscape position, mire water had certain individual chemical properties. The factors affecting the migration of substances in the mire ecosystems and the removal of chemical compounds beyond the studied profile were determined. During the growing season, the overall removal of macroelements with runoff flows amounted up to 4843 kg/km2 for Ca2+, 51.7 kg/km2 for Fe2+, 1419.0 kg/km2 for \[{\text{SO}}_{4}^{{2 - }},\ 2.253 × 10–3 kg/km2 for Pb, 10.037 × 10–3 kg/km2 for Cu, 317.29 × 10–3 kg/km2 for Mn, 41.191 × 10–3 kg/km2 for Zn, 8.151 × 10–3 kg/km2 for Ni, and 29.651 × 10–3 kg/km2 for Ti. The removal of organic matter reached 583.2 kg C/km2. The influence of mire water (especially, its organic components) on the water composition in the Klyuch River was clearly shown. The results of our analysis of the chemical composition of mire water in the system of geochemically conjugated landscapes of oligotrophic mire and their migration from the boggy catchment can be used to forecast the geochemical situation in the surface waters of boggy territories.