The productivity of sites for tree growth is usually evaluated
based on dominant heights. In fact, site index is defined as the
dominant height at a given reference age. Dominant height is
independent of stand density over a fairly wide range of
stocking thus well suited as a measure of site productivity
(Monserud, 1984; Husch et al., 1982). Dominant height is
defined as the mean height of the 100 largest diameter trees per
hectare