Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.1134/S1028334X22700416
Ключевые слова: charcoal particles, fires, lake sediments, paleoclimate, sedimentation traps, southern siberia
Аннотация: Abstract: Forest and steppe fires pose a threat to natural ecosystems and significantly worsen the living conditions of people living in the surrounding areas. Charcoal particles released into the atmosphere during fires are stored in lake sediments and used in paleo-limnological reconstructions as a proxy for the intensity and freПоказать полностьюquency of fires. Direct observations of the formation of recent lake sediments are quite rare, despite being quite necessary for adequate interpretation of ancient layers of bottom sediments. Using cylindrical traps incubated at the bottom of Shira Lake (South Siberia, Khakassia) from 2012 to 2019, the seasonal dynamics of the sedimentation flow of charcoal particles >100 µm into the bottom sediments of the lake was estimated for the first time. It has been shown that the charcoal flux increases annually from October to May, which is explained by burning of fuel by the inhabitants of the surrounding villages during the cold season and by steppe fires occurring in April–May. In summer, the flow decreases significantly; therefore, campfires made by vacationers are a less significant source of coal particles entering the lake. We show a significant anthropogenic contribution to the sedimentation flow of charcoal particles, both from burning fuel and from fires. The value of the annual flux of charcoal particles into traps is similar to the value estimated for recent sediments of other lakes in the world. Our data will be useful for more accurate reconstruction of the dynamics of fires in southern Siberia in the Late Holocene. © 2022, Pleiades Publishing, Ltd.
Журнал: Doklady Earth Sciences
Выпуск журнала: Vol. 507, Is. 1
Номера страниц: 977-980
ISSN журнала: 1028334X
Издатель: Pleiades Publishing