Dictionary

Common terms and concepts used in Swedish forestry:

Volume definitions

m³sk

Tree stem volume above the felling cut. Includes bark and top of the tree, but not branches.

m³fub

Volume of log(s) excluding bark.

m³fpb

Volume of log(s) including bark.

m³to

Volume of log(s) as given by a cylinder, with diameter = top diameter of the log under bark.

Mean diameters

Dgv - Basal area weighted mean diameter

Basal area weighted mean diameter (cm):



where
= number of tree objects, and
= diameter at breast height for tree object i, and
= tree expansion factor for the number of trees that tree object i represents.

where
= Sum of basal areas of trees (m²/ha) ()
= diameter at breast height for tree object i, and
= tree expansion factor for the number of trees that tree object i represents per ha.

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