Basal area – 1) Of a tree: the cross-sectional area (in square feet) of the trunk at breast height (4.5 feet above the ground). For example, the basal area of a tree 14 inches DBH is approximately 1 square foot. 2) Of an acre: the sum of basal areas of the individual trees on the acre. A well-stocked northern hardwood stand might contain 80 to 100 square feet of basal area per acre.
Block – An area of woodland based on geographic boundaries, tree species composition, timber products, accessibility, or other stand characteristics.
Board foot – A unit for measuring wood volumes equaling 144 cubic inches. It commonly is used to measure and express the amount of wood in a tree, sawlog, veneer log, or individual piece of lumber. For example, a piece of wood 12 inches x 12 inches x 1 inch and one measuring 12 inches x 3 inches x 4 inches each contains 1 board foot of wood.
Bole – The main trunk or stem of a tree.
Bolt – A short log or a squared timber cut from a log, commonly 8 feet long.
Broadcast burn – A controlled fire that is set purposely to burn across an area and eliminate woody debris and undesirable small trees and shrubs.
Browse – Growing leaves, shoots, or twigs used as animal fodder. As a verb, to feed on leaves, shoots, or twigs.
Buck – The process of cutting a tree stem into logs.
Burl – An abnormal growth of woody tissue protruding outward from a tree stem. Usually rounded in shape.