Assessing the effect of climatic and anthropogenic factors on the annual runoff of large rivers in European Russia and Siberiaстатья
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Дата последнего поиска статьи во внешних источниках: 4 мая 2020 г.
Аннотация:This study presents the analysis of variations in the annual runoff of large rivers in
European Russia (the Volga and Don) and Siberia (the Yenisei and Lena). Two methods used
in the study assess the runoff changes under the effect of climate and economic activity. One
method uses the data on water management statistics, and another is based on the
reconstruction of the natural runoff in recent decades, during which its considerable
anthropogenic changes have been taking place. We compare the obtained runoff estimates with
the anthropogenically affected runoff over this period and the runoff for the previous
(reference) period, in which the anthropogenic impact was negligible. The study shows that, in
the period of considerable anthropogenic impact, the annual runoff of the Volga and Don
decreased, and that of the Yenisei and Lena increased. In the case of the Volga and Don, the
effect of anthropogenic factors is comparable with that of the climatic factors, whereas in the
Yenisei and Lena, the former is much less than the latter. Both impacts on the runoff in the
Volga and Don are directed towards its decrease. In the Yenisei and Lena, the effects of these
factors were differently directed with the predominant effect of climatic factors.