Original: The term boreal forest is sometimes , particularly in Canada , used to refer to the more southerly part of the biome , while the term taiga is then often used to describe only the more barren areas of the northernmost part of the taiga approaching the tree line .
Simplified: In Canada , boreal forest is the term used to refer to the southern part of these forests , while '' taiga '' is used to describe the northern areas south of the Arctic tree line .