This is a problem with 'organic' sequestration. However, trees are relatively long lived and take a long time to fully decay. Suitably harvested and treated woo

This is a problem with 'organic' sequestration. However, trees are relatively long lived and take a long time to fully decay. Suitably harvested and treated wood also lasts a long time. Young growing trees sequester the most carbon, so you could have a cycle of logging older trees and replanting shrubs to maximise the sequestration. Some types of bamboo grow incredibly fast, as much as 90cm a day. I did some back of the envelope calculations. It would take something like 240 billion extra trees to return us to pre-industrial carbon dioxide levels. This sounds like a lot, but it certainly isn't physically impossible. The Amazon has 400 billion trees. Finding suitable land mass for this purpose is an issue. But trees are remarkable, they grow in many inhospitable places. Mangroves for example survive in very difficult conditions with salt water and changing tides. So there is not necessarily an overlap with arable land. There are always more ambitious things you can try, like GMO trees that can grow in the desert, or giant floating forests in the Pacific Also, if we could stop deforesting the Amazon currently, that would be a good start