Določanje prostornine dreves s krivuljami za opis oblike debla (KOOD)
Determining tree volume using taper functions

english
slovenian

2022

volume 80, issue 2

Zveza gozdarskih društev Slovenije
(Obvezni izvod spletne publikacije)

Taper functions continuously describe the relationship between the tree height and the trunk diameter at the level of an individual tree from the ground to the top of the tree. Using them, we can determine the trunk diameter at any height from the ground (or top of the tree) and can, e.g., calculate the volume of the tree or assortment, select an optional upper minimum diameter, calculate median diameters of individual assortments, or calculate the volume of individual optionally selected trunk parts. Tree species, diameter at breast height, height (measured or calculated from the height function), and taper function are the input data we need for calculating the volumes. In the example of spruce, we present the advantages and limitations of the mentioned functions and compare our own taper functions with existing German taper functions. The results of determining tree volume by both taper functions are comparable. Using section measurements of the diameters, manual or optical ones, we can locally adapt foreign taper functions for the Slovenian situation. Using taper functions, we improve the reliability of tree volume determination and enable new calculations of the potential assortments’ volumes.

04.12.2024