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Environmental changes in the northern Altai during the last millennium documented in Lake Teletskoye pollen record

Published online by Cambridge University Press:  20 January 2017

Andrei A. Andreev ,
Roberto Pierau ,
Ivan A. Kalugin ,
Andrei V. Daryin ,
Lyubov G. Smolyaninova  and
Bernhard Diekmann
Andrei A. Andreev*
Affiliation:
Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, 14473 Potsdam, Germany
Roberto Pierau
Affiliation:
Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, 14473 Potsdam, Germany
Ivan A. Kalugin
Affiliation:
Trofimuk United Institute of Geology, Geophysics and Mineralogy SB RAS, akademika Koptyuga 3, Novosibirsk 630090, Russia
Andrei V. Daryin
Affiliation:
Trofimuk United Institute of Geology, Geophysics and Mineralogy SB RAS, akademika Koptyuga 3, Novosibirsk 630090, Russia
Lyubov G. Smolyaninova
Affiliation:
Trofimuk United Institute of Geology, Geophysics and Mineralogy SB RAS, akademika Koptyuga 3, Novosibirsk 630090, Russia
Bernhard Diekmann
Affiliation:
Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, 14473 Potsdam, Germany
*
*Corresponding author. E-mail address:[email protected] (A.A. Andreev).
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Abstract

A high-resolution pollen record from Lake Teletskoye documents the climate-related vegetation history of the northern Altai Mountain region during the last millennium. Siberian pine taiga with Scots pine, fir, spruce, and birch dominated the vegetation between ca. AD 1050 and 1100. The climate was similar to modern. In the beginning of the 12th century, birch and shrub alder increased. Lowered pollen concentrations and simultaneous peaks in herbs (especially Artemisia and Poaceae), ferns, and charcoal fragments point to colder and more arid climate conditions than before, with frequent fire events. Around AD 1200, regional climate became warmer and more humid than present, as revealed by an increase of Siberian pine and decreases of dry herb taxa and charcoal contents. Climatic conditions were rather stable until ca. AD 1410. An increase of Artemisia pollen may reflect slightly drier climate conditions between AD 1410 and 1560. Increases in Alnus, Betula, Artemisia, and Chenopodiaceae pollen and in charcoal particle contents may reflect further deterioration of climate conditions between AD 1560 and 1810, consistent with the Little Ice Age. After AD 1850 the vegetation gradually approached the modern one, in conjunction with ongoing climate warming.

Keywords

PollenPaleoclimateVegetation historyNorthern AltaiLast millennium
Type
Research Article
Information
Quaternary Research , Volume 67 , Issue 3 , May 2007 , pp. 394 - 399
Copyright
University of Washington

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