Sustainability of lumber
Lumber can be sustainably sourced, but it is important to be careful. A major concern is the loss of virgin tropical forests, where many hardwoods are found and which are valuable as a carbon sink. The UN Food and Agricultural Organization (FAO) reports that primary forests are being lost or "modified" at the rate of about 15 million acres a year.8 It should therefore be ensured that the source is a sustainably managed forest.
There are various sustainable lumber certification systems current, including the: