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Novenko, Elena Y; Tsyganov, Andrey N; Payne, Richard J; Mazei, Natalia G; Volkova, Elena M; Chernyshov, Viktor A; Kupriyanov, Dmitry A; Mazei, Yuri A
Holocene, 02/2018, Letnik: 28, Številka: 2Journal Article
Climate and human activity affected significantly the Eurasian on the forest vegetation zone through the Holocene. This paper presents new multi-proxy records of environmental changes at the southern boundary of the mixed coniferous broadleaved forest zone in the east-central part of the East European Plain during the middle and late Holocene. Palaeoecological analyses of a peat core for pollen, charcoal, peat humification, plant macrofossils and testate amoebae with dating using radiocarbon have shown that climate appears to have been a dominant control on vegetation. There is strong evidence for a reduced precipitation–evapotranspiration ratio and high fire frequency during the Holocene thermal maximum (6.9–5.3 ka BP), leading to dominance of Betula–Pinus forests. By contrast subsequent climatic cooling led to the expansion of broadleaved forests and establishment of Picea. Human activities influenced vegetation from the Neolithic onwards but played a role which was secondary to climate until the recent past. Over the last century, human impacts considerably increased because of harvesting of broadleaved trees and contributed to the formation of the current mixed coniferous broadleaved forests.
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