The location of the Altai-Sayan Ecoregion in the center of the Eurasian continent determines the formation of very different climatological conditions. As a result the climate in the north-west part of the region is continental and in the south-east part – severely continental with hard long winters and hot summer, especially in the intermountain depressions. The microclimate differs a lot in different terrains. The altitude zonal features of climate are expressed clearly: from the fine desert-steppe to the hardest high-mountain.