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COMPREHENSIVE ASSESSMENT OF LAKE GUSINOYE, REPUBLIC OF BURYATIA, BASED ON WATER, SUSPENDED PARTICULATE MATTER AND BOTTOM SEDIMENTS GEOCHEMISTRYстатья
Дата последнего поиска статьи во внешних источниках: 15 апреля 2026 г.
- Авторы: Efimova Lyudmila E., Kosheleva Natalia E., Lukyanova Anna N., Sycheva Daria G., Efimov Vasilii A.
- Журнал: Geography, Environment, Sustainability
- Том: 19
- Номер: 1
- Год издания: 2026
- Издательство: Издательство Русского географического общества
- Местоположение издательства: Москва
- Первая страница: 97
- Последняя страница: 114
- DOI: 10.24057/2071-9388-2026-3979
- Аннотация: Lake Gusinoye, the second largest lake in the Republic of Buryatia, is a key source of domestic and industrialwater supply for the city of Gusinoozersk and nearby areas. It also serves as a recreational site and as a cooling reservoir forthe coal-fired Gusinoozerskaya Thermal Power Plant. The lake is exposed to prolonged anthropogenic impact from adjacentpollution sources, including the power plant, overburden dumps of the Kholboldzhinsky coal mine, and a municipal solidwaste landfill. This study aims to assess the current hydrochemical state of Lake Gusinoye based on a field survey conductedin July 2019. Sampling of water, suspended matter, and bottom sediments was carried out along three transverse and onelongitudinal profiles covering the entire lake area, as well as in inflowing rivers and the plant’s discharge channel. Parametersanalyzed included physico-chemical characteristics, major ions, nutrients, heavy metals, and metalloids (HMMs). Aerationof the water column observed during the study period was caused by wind-driven mixing and upwelling, while oxygendepletion was noted near the wastewater discharge zone. Nutrient levels indicated mesotrophic conditions, approachingeutrophic. Wind forcing facilitated a more uniform distribution of water mineralization and major ions across the greater partof the lake’s surface area. Increased water mineralization and sulfate, chloride, and sodium concentrations were confinedto the northern part of the lake, where the main anthropogenic sources of readily soluble salts are located. Among HMMs,dissolved Zn, Sr, Mo, and Cu predominated, with maximum concentrations exceeding sanitary norms in the northeastern partof the lake, adjacent to pollution sources. Suspended matter was depleted in HMMs relative to regional lithospheric clarks,whereas bottom sediments showed higher concentrations, indicating continuous pollutant accumulation, especially in theeastern part of the lake.
- Добавил в систему: Ефимов Василий Антонович
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