I also did some reading up on this. I live in British Columbia and reforestation is a big deal. Apparently a tree planter can plant 2,000 seedlings a day. More if the terrain is good and they're experienced. So yeah, I can see it now.

Though I still wonder about the survival rate of the plantings, but How question is indeed answered.

[–] squaresinger@lemmy.world 1 points 4 days ago

Popular Mechanics is US-based, so they use short billions: 1bio = 1 000 000 000.

You are right, long billions (1bio = 1 000 000 000 000) would be a lot more. Though even that would still be possible, but then ~35% of the chinese population would have to be employed in planting trees.