The Sayan Alpine meadows and tundra ecoregion (WWF ID: PA1016) is an ecoregion that covers the high areas of the Sayan Mountains above the treeline, between the Altai Mountains in the west and Lake Baikal in the east.

This ecoregion is characterized by glacially-carved valleys with an upland mosaic landscape of alpine meadows.

This climate is characterized by high variation in temperature, both daily and seasonally; with long, cold winters and short, cool summers with one to three months averaging at least 10 °C or 50 °F.

[3] Both plant and animal diversity is high, as the area is relatively protected by its remoteness and by its position at the meeting places of different ecological zones.

From treeline up to the barren rock zone, alpine meadows and associated species predominate.