What climatic zone occupies the smallest area in Eurasia?

This question can be answered in two ways. If in this context we consider Eurasia as a purely continental part, then in this case the equatorial zone will be the smallest climatic zone, because most of the continent is located in temperate latitudes. If we start from the fact that it is necessary to take into account the islands adjacent to the mainland, then such a belt will be the Arctic one, because some part of the island formations are located in the north and beyond the north pole, which allows us to consider this gap to be the smallest.