Description of articleObecný model pro odhad finanční ztráty na poškozených dřevinách po těžebně dopravní činnosti.
[General model for estimation of financial loss on damaged trees after loging and hauling processing] 128 - 133.
|Name of article:||Obecný model pro odhad finanční ztráty na poškozených dřevinách po těžebně dopravní činnosti|
|Author:||Jiří Dvořák, Jaroslav Tománek|
Damages to trees are negative income from operations that are connected with the logging and the arch skidding in the forest. The financial evaluation of the secondary damage to trees, which comes after a dosing interval depending on the expansive trunk rot and the falling tree increment, is neglected. The high probability is the fungal attack causing. It is dependent on the amount of injuries and tree sanitation. The minimal risk is for injuries to 10 cm2 (0%) and maximal for tree injuries over 200 cm2 (100%). Analytical results have demonstrated that 15 – 63% of tree-wood can be qualitatively damaged after ten years. The significant factor is more damages up the one tree. 10 – 40% of trees were damaged with double and more injuries depending on the 3rd – 5th age class. The injuries are cumulating so on small number of trees. The increments of damaged trees decrease by about 1 – 2%.