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All areas designated as forest according to the NFI forest definition. The forest definition includes shrub forest. The target variable "forest area" is also used when classifying the total area as forest or non-forest.

Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that were harvested between two inventories.

Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that were harvested, died or disappeared between two inventories.

Volume of stemwood with bark of all trees and shrubs ≥12 cm diameter at breast height (dbh) that were removed from the forest because of damage that occurred between two inventories rather than due to silvicultural planning. The characteristic is derived at the sample plot level from the fellings of the tally trees and the proportion of sanitary/salvage fellings (according to information from the foresters).

Increase in stemwood volume between two inventories of all surviving trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark, the stemwood volume of all ingrowing trees and shrubs with bark, and the modelled increase in the stemwood volume of the losses with bark during half the inventory period.

Increase in the stemwood volume between two inventories of all surviving trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark, the stemwood volume of all ingrowing trees and shrubs with bark, and the modelled increase in the stemwood volume of the losses with bark during half the inventory period minus the volume of mortality. The net increment thus corresponds to the increment (=gross increment) minus the volume of mortality.

Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that were harvested, died or disappeared between two inventories.

Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that died naturally between two inventories (e.g. due to windthrow or insects) or disappeared (e.g. due to avalanches), but that were not harvested. Mortality is the sum of natural losses and the remaining mortality.

Volume of lying deadwood ≥7 cm in diameter (merchantable wood), including merchantable pieces of wood in piles of branches.

Stemwood volume of living trees and shrubs (standing and lying) with a diameter at breast height (dbh) ≥12 cm with bark.

Volume of stemwood of all dead trees and shrubs (standing and lying) with a diameter at breast height (dbh) ≥12 cm with bark.

Measure for the ecological assessment of forest stands, derived from the number of woody species with a diameter at breast height (dbh) ≥12 cm and the occurrence of woody species of special ecological significance (willows, birches, alders, native poplars, oaks, chestnut, cherry, wild fruit and Sorbus species) in the upper layer.

Number of species of trees and shrubs that occur within the 200 m² circle on the sample plot with at least one living individual ≥40 cm high.