That 1 Kg of wood contains about 450 to 500 gm of Carbon. This means 1 Kg of wood is holding about 1.65 to 1.80 Kg of CO2. Wood is the only construction material which has absorbed CO2 from the atmosphere when produced and not emitted more during its production.
Using wood is something we can all do to help the environment. By demanding and using more sustainable produced wood, we can ensure that more trees will be planted and more carbon dioxide will be absorbed from the atmosphere.