Share of global tree canopy cover 2016, by biome

Tropical rainforests make up almost one third of all forest area in the world, when looking at the area of canopy coverage. The world's largest rainforests are found near the equator in South America, Central Africa, and the South Pacific. In fact, the combined total of all types of tropical forest account for over 51 percent of the world's canopy coverage.
The second most common individual biome type is boreal coniferous forest, which refers to the Taiga - an almost continuous forest that stretches from Scandinavia, across Russia, and covers much of Alaska and northern Canada.