Estimation of birch substand parameters in order to divide a stand into two diameter classes

English: Functions are constructed to estimate stand parameters separately for birch trees with diameter greater than or less than 11 cm at breast height. The parameters are estimated when the parameters of the entire stand are known. The parameters in question are: Basal area mean diameter, Loreys height, volume, basal area, tree number (per hectare). The functions fulfill the functional relations that exist between these parameters. The functions are tested against an independent set of data