Establishing of height curves for quality site conditions classification of beech coppice forests in the Sarajevo Canton.
In this paper we presented the methodology approach in establishing the height curves for quality classification of the site conditions for beech coppice forests growth in the Sarajevo Canton. Data from the inventory in 2005 and 2006 for this area was used as the basic research material. During the work, many functions, known as “growth functions” were tested. The medium value of the tree height per diameter classes was equalized with Chapman-Richard’s function, which was the best result regarding statistical parameters in comparison with other tested functions. The upper and the lower border of height variation was equalized with this function ( h S t H ⋅ ± ) and the established belt of the total height variation. This belt was spitted in five equal sub belts, which represented relative qualitative classes. In this way we established the mathematical model for quality determination. Each sub belt was mathematically determined as well. Consequently, the mathematical model for calculation (determination) of single tree relative qualitative class was established based on the measured data: the diameter and the height of the tree, (D1,3 and H or Ds and Hs).