Afforestation

The establishment of a forest in areas where the land use was not forest.

Annual Allowable Cut

Amount of wood permitted to be harvested within a one year period on a sustainable basis.

Basal Area

A basis of measurement that is used to determine how a piece of land is stocked with trees; BA = 0.005454 x DBH2, it is the measurement of the cross-sectional area of a tree stem at 1.3m above ground (diamĀ­eter at breast height (DBH)); usually calculated at square feet per acre.

Biodiversity

All life forms found within forested areas and the ecological roles they perform.

Board Foot

Unit of measurement of lumber; 1 inch thick, 1 foot wide, 1 foot long.