Environmental dynamics of the Baraba forest-steppe (Siberia) over the last 8000 years and their impact on the types of economic life of the population

QUATERNARY SCIENCE REVIEWS

卷:163

Article

Zhilich, Snezhana^1,3  Rudaya, Natalia^1,2,4,7  Krivonogov, Sergei^2,3  Nazarova, Larisa^4,5,6  Pozdnyakov, Dmitry^1,7 

[1] Inst Archaeol & Ethnog SB RAS, Prospekt Ak Lavrentieva 17, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Ul Pirogova 2, Novosibirsk 630090, Russia

[3] Inst Geol & Mineral SB RAS, Prospekt Ak Koptyuga 3, Novosibirsk 630090, Russia

[4] Kazan VI Lenin State Univ, Ul Kremlyovskaya 18, Kazan 420000, Russia

[5] Univ Potsdam, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany

[6] Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Dept Periglacial Res, Telegrafenberg A43, D-14473 Potsdam, Germany

[7] Altai State Univ, Str Lenin 61, Barnaul 656049, Russia

关键词: Holocene;    Climate dynamics;    Russia;    Vegetation dynamics;    Baraba forest-steppe;    Archaeology;    Transfer function;   

DOI  :  10.1016/j.quascirev.2017.03.022

来源: Elsevier

【 摘 要 】

This article offers a reconstruction of the vegetation and climate of the south-western Siberian Baraba forest-steppe area during the last ca. 8000 years. The analysis of palynological data from the sediment core of Lake Bolshie Toroki using quantitative methods has made it possible to reconstruct changes of the dominant types of vegetation and mean July air temperatures. Coniferous forests grew in the vicinity of the lake, and mean July air temperatures were similar to present-day ones between 7.9 and 7.0 kyr BP. The warmest and driest climate occurred at 7.0-5.0 kyr BP. At that time, the region had open steppe landscapes; birch groves began to spread. A cooling trend is seen after 5.5 kyr BP, when forest-steppe began to emerge. Steppe communities started to dominate again after 1.5 kyr BP. Mean July air temperatures lower than now are reconstructed for the period of 1.9-1 kyr BP, and then the temperatures became similar to present-day ones. Comparing the archaeological data on the types of economy of the population which inhabited the Baraba forest-steppe with the data on changes in the natural environment revealed a connection between the gradual transition from hunting and fishing to livestock breeding and the development of forest-steppe landscapes with a decrease in the area covered by forests. The development of the forest-steppe as an ecotonic landscape starting around 5 kyr BP might have contributed to the coexistence of several archaeological cultures with different types of economy on the same territory. (C) 2017 Elsevier Ltd. All rights reserved.

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