Calibration of Upper Diameter Models in Largescale Forest Inventory

1992

S. 231-239

17 Lit. Ang.

Unselbständiges Werk

200040899

Models for estimating the upper diameter of trees were constructed using sample tree data measured in the 7th National Forest Inventory in Finland. Calibration of the models was tested with data from the 8th National Forest Inventory. The results show that using mixed estimation for combining the two data sets improves the reliability of the models. Models and methods used in this study can be recommended for use in forest inventories.