So how much forestation would be required to reverse a significant part of the effect of the industrial revolution? Lets say the CO2 emitted in the last 30 year

So how much forestation would be required to reverse a significant part of the effect of the industrial revolution? Lets say the CO2 emitted in the last 30 years. Would there be enough vacant area on earth to handle such an amount of forestation? In Europe, I could only imagine a significant reforestation if our agriculture becomes much more efficient.