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Geochemical changes of landscapes due to brown coal mining at the Sharyngol deposit in the Central Mongoliaтезисы доклада
- Авторы: Alexey ALEKSEENKO, Natalia KOSHELEVA, Nikolay KASIMOV, Sandag ENKH-AMGALAN
- Сборник: Book of abstracts of International Geographical Union Regional Conference “Geography, Culture and Society for Our Future Earth”, 17–21 August 2015, Moscow, Russia
- Серия: Thematic Session "Cultural Regionalism and Regional Identity"
- Тезисы
- Год издания: 2015
- Издательство: Izdatel'stvo Moskovskogo Gosudarstvennogo Universiteta im.M.V.Lomonosova/Publishing House of Moscow State University
- Местоположение издательства: Russian Federation
- Первая страница: 1237
- Последняя страница: 1237
- Аннотация: The geochemical transformation of landscapes near Sharyngol brown coal open-pit in the Central Mongolia was considered. For this purpose, the landscape and land-use zoning was done, the levels of accumulation of heavy metals and metalloids in allocated zones were defined and the main factors that govern the geochemical changes during the deposit mining were identified. The study is based on the data of soil- geochemical survey in 2013. These include the contents of 20 metals and metalloids in 65 samples of topsoils (0-5 cm) and technogenic surface formations (TSF) which determined by mass spectrometry with inductively coupled plasma. The content of organic matter and the actual acidity were also determined. The analysis of the data showed that the geochemical transformation of steppe landscapes under coal mining impact is manifested in the formation of multielemental anomaly in dumps and the accumulation of pollutants in the adjacent city with their subsequent migration into the surrounding landscapes. Sharyngol coal mine dumps represent a source of landscapes pollution by the association of As-Bi-W-Mo, contents of which are much higher than abundances in lithosphere and sedimentary rocks and exceed the MPC of As up to 18 times; Mo –in 6 times; V – in 1.5 times. Due to the heating with coal and transport impact, the anomalies of Pb-Zn-Sb and PAHs are formed in the urban soils. Moreover, the urban soils are alkalized: the pH value changes from the background range of 6.2-6.7 to the values of 8.2-8.7. The basic landscape and soil parameters which control the accumulation of As, Bi, W, Mo, Pb and Zn is the type of land use, as well as the physical and chemical properties of storage media including the amounts of oxides of Fe, Mn and the pH value.
- Добавил в систему: Кошелева Наталья Евгеньевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Sharyngol_IGU | Alekseenko_IGU_2015.pdf | 588,7 КБ | 21 сентября 2015 [AlekseenkoAV] |