Comparison of tree volume equations for small-leaved lime (Tilia cordata Mill.) in the Czech Republic

Abstract

Although the small-leaved lime (Tilia cordata Mill.) is a native tree in the Czech Republic, there are no volume tables, and its volume has so far been estimated according to beech (Fagus sylvatica L.) tables. In order to increase accuracy of timber volume calculations, the most appropriate volume equations should be selected to develop volume tables specifically for lime. Based on literature sources eight volume equations were selected, and their accuracy was tested by statistical evaluation of assessed parameters and differences between calculated and sampled lime tree volume. Eighty-one sample trees were randomly selected for this study. The most suitable equation was Børset's equation according to the evaluation of equation parameters and comparison of the results obtained from the volume formula and from sample trees (difference of mean value 0.000009 m³). Finally, the calculated lime volumes were compared with the beech tables. The lime volumes are higher than beech volumes according to beech tables and positive differences for the lime, which varied from 0.05 m3 to 0.35 m3, support the need for new lime volume table.

Keywords:

• Czech Republic
• lime
• sample trees
• volume equations
• volume tables

Funding

This research was supported by the project of the Ministry of Agriculture of the Czech Republic Grant [grant number QJ1320230] and by the project of the Czech University of Life Sciences in Prague [grant number 20134366].

Additional information

Funding

Funding: This research was supported by the project of the Ministry of Agriculture of the Czech Republic Grant [grant number QJ1320230] and by the project of the Czech University of Life Sciences in Prague [grant number 20134366].