Mass reforestation is possible in a generation or two though... In Lithuania for example a lot of reforestation was done in the later half of the last century,

Mass reforestation is possible in a generation or two though... In Lithuania for example a lot of reforestation was done in the later half of the last century, the percentage of the land that is forested now is 33% compared to 20% in the 40s. http://www.china-ceecforestry.org/wp-content/uploads/2017/01/Lit-01.png http://www.china-ceecforestry.org/wp-content/uploads/2017/01...