Articles

Nauwkeurige methode voor de aanwasbepaling van het grondvlak met behulp van de Pressler-boor

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Abstract

A precise method for the determination of the increment of the  basal area using the PressIer bore. Refering to  previous research showing that the basal area of the corsica pine could be  characterized by an ellips, we present in this paper a precise method for the  determination of the increment of the basal area. In this method we determine  the direction of the maximum diameter, we measure this diameter and we take a  core in one of the points of tangency of the caliper with the measured tree.  The determination of the diameter perpendicular to the maximum diameter  finishes the work wich is to be done in the forest. From the classical  measurements effectuated on the core and from the measured diameters we can  then determine the form (V) and the excentricity (e). Substituting these two  parameters in the formula 2 or 2', we can also calculate the error of a  radius measured on the core with respect to the representative radius, This  error with them allow us to correct the measured value of the minimum or the  maximum radius and we will be able to do a precise determination of the  increment.

How to Cite:

Goossens, R., (1968) “Nauwkeurige methode voor de aanwasbepaling van het grondvlak met behulp van de Pressler-boor”, Silva Gandavensis 12. doi: https://doi.org/10.21825/sg.v12i0.1009