Wood decays when there is sufficient air and moisture. Wood used for construction is dried before being used, and unless there's a leak / excessive humidity, should be able to last a very long time without substantive decay. Wood in stuff like furniture is also often sealed with a specific wax/oil layer to keep out moisture, further preventing rot.
Theoretically it will decompose someday, but at the point where we have significantly less buildings I assume either other bad things have made this less of a concern, or we'll be advanced enough to recapture that carbon in other ways.
...but yes, if you're willing to "waste" the resources, just thoroughly burying wood away from air should also work.
Theoretically it will decompose someday, but at the point where we have significantly less buildings I assume either other bad things have made this less of a concern, or we'll be advanced enough to recapture that carbon in other ways.
...but yes, if you're willing to "waste" the resources, just thoroughly burying wood away from air should also work.