Figure 6. Predicted occurrence of different threshold (critical) wind speeds for uprooting of trees in Finland from late autumn to early spring towards end of this century (birch nor consider as being leafless). The decrease of share of lower critical wind speeds is related to possible decrease in the success and share of Norway spruce in tree species composition (opposite to birch and Scots pine), especially in southern Finland, due to increasing drought episodes increase. In the North, higher average dbh/h-ratio of trees and low share of Norway spruce explains the high resistance of forests to wind force. However, in summer the map would look different as in addition to Norway spruce also birch (in leaf) and Scots pine are vulnerable to damage.