METHOD OF DETERMINING THE DISTRIBUTION OF THE BASIC SUBSTANCE ON THIRD-DIAMETERS OF RELATIONSHIP

摘要

The present invention relates to a method and device for carrying out a survey of the basal area of a forest stand and the distribution of the individual trees with respect to diameter classes. The device of the invention comprises a caliper combined with a relascope in such a way that a certain position of the caliper corresponds to a certain sighting-angle. Furthermore the device comprises a sight field located at an observation point. When practicing the method of the invention the tree to be measured is calipered. Then the sighting-angle of the relascope is compared to the sight field and by checking if the sight field is within the sighting-angle it is determined whether the measured tree is within its border line circle or not.