DYNAMICS OF VEGETATION COVER OF SOUTHWESTERN TRANSBAIKALIA IN THE HOLOCENE (A CASE STUDY OF MALKHANSKII RANGE)
D.V. KOBYLKIN, I.N. VLADIMIROV, V.B. VYRKIN, K.E. VERSHININ
1V.B. Sochava Institute of Geography, Siberian Branch, Russian Academy of Sciences, 664033, Irkutsk, ul. Ulan-Batorskaya, 1, Russia
agrembrandt@inbox.ru
2V.B. Sochava Institute of Geography, Siberian Branch, Russian Academy of Sciences, garisson@irigs.irk.ru
Keywords: evolution of landscapes, vegetation dynamics, bottom sediments, palynology, absolute age, Southwestern Trans baikalia
Abstract
A comprehensive geographical analysis of bottom sediments of aeolian-dam Lake Rybnoe in Malkhanskii Range revealed evolutionary features in the development of landscapes of Southwestern Transbaikalia. New evidence on the accumulation dy namics of bottom sediments in this lake is presented and their absolute age is determined. A palynological characteristic is given to the bottom sediments of Lake Rybnoe and their stratigraphic correlation with Lake Gun-Nur in Northern Mongolia. A study of the structural features in the lake’s bottom sediments, coupled with radioisotope data on the age and a palynological assess ment, permitted us to assess the dynamic characteristics of the sedimentation processes and the evolution of vegetation cover in different climatic stages of the Holocene.
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