The Amazon valley is still the largest forest reserve in the world. The human population density of this area is low, but growing. Most of the forests are in equatorial west Africa. West Africa was once densely forested. The Sahara is moving south.
Most forest is tropical hardwood type.
Most wood in Africa is used for fuel. Asia Much of Siberia is coniferous forest, as is true for northern China, Japan and Korea. Mostly the same things are true in Asia, as in Africa. Roughly half the world's supplies of coniferous forests lie in the former Soviet Union. There are mixed temperate hardwood zones south of that.