The considered territory from point of view of its
geographical positions located in the boreders of the Western-Siberian plain
country, Sayan-Altay mountain country and Central-Siberian country, which include
Western-Siberian plain, Salayr-Kuznetsky area, with Kuznetsky depression, Western and East
Sayans with laying to the north from them Minusinsky and Chulym-Yeniseisky depressions,
Tuva depression and Tuva upland with contiguous to them mountain-ridge of Western and East
Tannu-Ola, Sangilen upland. To the north of mountains of Southern Siberia (Sayans)
places Central-Siberian plateau, passing in North-Siberian lowland and further in Byrranga
mountains.
South of Central Siberia represents a combination of
raised lands and depressions. From west, region is limited by Kuznetsky Alatau, where from
its foothills Chulym-Yeniseisky depression begins. It is separated from Minusinsky
depression by Batenevsky mountain-ridge, which further on south-west passes into the
Abakansky mountain-ridge. In the south, Minusinsky depression adjoins to foothills of
Western Sayan, representing the complex of mountain system consisting from rather narrow
mountain-ridges. The watershed of Sayansky mountain-ridge, extend in the northeastern
direction. On a joint of Western and East Sayan, mountain unit with brightly expressed
alpine relief is located. East Sayan is stretched from south-east on northwest and form
system of mountain-ridge with so-called white-mountains. By south from Sayan and up to
mountain-ridge of Tannu-Ola and to the north of upland Sangilen Central-Tuva depression is
located. From west it is limited by Shapshalsky mountain-ridge of Altay mountains, on east
it passes in East-Tuva upland. Along East Sayan from south-east on northwest,
Irkutsk-Cheremhovsky plain is extended. On northeast it is limited by Western
outskirts of Lena-Angarsky plateau, on the north and northwest - southern extremity of
Angarsky mountain-ridge.
The climate as a whole for all region is characterized by
sharp continental conditions. The distinctions exist in the varying of temperature range,
in the humidity and some other parameters. It is connected to various height above sea
level, with presence of powerful mountain systems, deep valleys and depressions.
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