Журнал Сибирского федерального университета. Биология. Journal of Siberian Federal University/ Biology №1 2009

Biology 1 (2009 2) 4-12 ~ ~ ~ УДК 581.526.3 + 551.583.7 (571.) Western Siberia, a Review of Holocene Climatic Changes Tatiana A. Blyakharchuk* Institute of Monitoring of Climatic and Ecological Systems SB RAS 10/3 Akademichesky, Tomsk, 634055 Russia 1 Received 3.03.2009, received in revised form 10.03.2009, accepted 17.03.2009 This article generalizes published palaeoecological and palaeoclimatic data based on pollen and other proxy data for Holocene of Western Siberia and describes the most signifi cant palaeoreconstructions and hypothesis in explanation of past climatic changes in Western Siberia, although it does not pretend on overall review of all palaeopalynological data available for this region. <...> To the end of 20-th century quite a lot of pollen diagrams supplied by radiocarbon dates were published for territory of Western Siberia. <...> Each generalized palaeoclimatic curve is * Corresponding author E-mail address: tarun5@rambler.ru 1 © Siberian Federal University. <...> Comparing of these curves allocated on the same time scale can provide information about local and regional fl uctuations of climate, among which fl uctuations which are similar in different curves and proxies refl ect more global and regional events in climatic changes and those presented only in individual curves refl ect change of local climates. <...> Short geographic description of the area The complicated character of Holocene climatic changes in Western Siberia is a result of the continental position of this extensive low plain (52-72 degrees N, 60-90 degrees E). <...> Clear latitudinal vegetation zones in Western Siberia range from Tatiana A. Blyakharchuk. <...> Patterns of the Holocene climatic changes in Western Siberia and hypothesis connected with them On the basis of available palynological data from the whole of Western Siberia, plantmacrofossil investigations in the Yenisey River region, and investigations of lake-level changes in the forest-steppe and steppe zones, the palaeoclimatic reconstructions were performed for the entire Holocene by different researches during second half of 20-th centuary. <...> With use of different methods of qualitative and quantitative reconstructions of paleoclimate the results have been presented as palaeoclimatic curves (Fig. 1.) In available publications each researcher presented well established palaeoreconstructions of past climates, but in many cases there were not clear contradictions in results <...>