[jartelt]

According to the IPCC, to meet the 1.5 degree C target we need to be doing 6 GtCO2 of carbon dioxide removal per year by 2050.

It would be very difficult to reach that scale with reforestation and afforestation along in the next 27 years.

Plus, if you simply bury wood it will be broken down over time and release methane. No one has yet developed a scalable way to bury large quantities of wood and keep them from decomposing (startups/researchers are starting to work in this area).

[cmrdporcupine]

The breakdown of wood a few feet beneath the surface is actually extremely slow.

If converted to charcoal ("biochar") through pyrolisis first it's much better, and won't release methane or CO2 (and enriches soil)

The bigger issue would be the logistics, and the amount of CO2 emissions simply involved in processing and burying it.

[cogman10]

We are going past 1.5C.

That being said, the way you do this isn't specifically with reforestation, rather, this needs to be tree farming with fast growing trees. Perhaps even geneticly engineering trees for this specific purpose.

[jartelt]

Ok - carbon dioxide removal is going to be needed to meet to the 2 degree C target too.

Sure, you can reforest or afforest with whatever trees you want. It certainly will help but won't solve the issue alone.