You joke, but if you have a solid idea of how to permanently¹ sequester carbon from trees in a cheap and scalable fashion, it might be worth submitting that proposal. If nothing else, it can serve as a baseline against which other proposals are judged (as in X tones more cost effective than the "plant some trees" approach).

¹ Some uses for wood, like as fuel, release the carbon back into the atmosphere. Likewise anything where the wood decomposes.