Forestation may be going up but what about fragmentation of wild land? It seems like because of cars, people can and do build houses all over, scattered about. This causes habitats to be broken up by busy roads, which kills animals, messes up migration patterns, and more. A lot of those people will kill or drive away all the animals surrounding their house. They spray for insects, trap all the animals, block their food sources, etc. Sure, they have trees since they are not using the land for agriculture, but I'm not certain that it is ultimately better for animals.