Classification of productive forest area by site quality (H40)

The site quality classification is an expression of the area's capasity to produce wood when stocked with a tree species suitable for the local growing conditions. The site quality of the H40-system is based upon the top height (the middle height of the hundred trees per hectare with the largest diametre) of the trees at the age of 40 years at breast height (1.3 m above ground level)

Productive forest area by site quality (H40) 1977

The site quality classification is an expression of the area's capasity to produce wood when stocked with a tree species suitable for the local growing conditions. The site quality of the H40-system is based upon the top height (the middle height of the hundred trees per hectare with the largest diametre) of the trees at the age of 40 years at breast height (1.3 m above ground level) 1967 and 1977