The impact of consecutive, shelter and single tree selection system on quantitative characteristics of oriental beech forest in the Muzisay section forest, plan of Haftkhal2, Neka forest

Abstract

Evaluation of management practices in forests is necessary to determine the appropriate method of sustainable management. Therefore, some quantitative parameters of beech forests, harvested sequentially as shelterwood system and single-selection method were evaluated and compared to a controle compatrment. The control and harvested compartments were selected in Muzisay forest plan in Neka. The measurement was done within 0.1 ha sampe plots in 150×200m gridin 2019. Some quantitative characteristics were measured including the species type, DBH of all trees greater than 12.5 cm, and the height of eight trees in each sample plot. The results showed that from 2001 to 2019, the frequency of beech in exploited plots increased from 81.51% to 96.2%. The abundance of hornbeam decreased from 14.41% to 2.9%. In control compartment, the beech frequency increased from 89.9 to 93.7% too. The average number of trees in the control plot was gradually declined from 275.5 to 245.83. In contrast, it increased from 259.23 to 315.81 in managed plots. The opposite was seen regarding to the stand volume. In the managed compartments, the stand volume was declined from 481.47 silves to 426.31 silves. In contrast, it raised from 454.4 to 528.27 silves in control compartment. Both areas had an nearly regular age structure and near to normal volume structure. There were no significant differences between control and harvested compartments in light of total height, average number tree, and volume h-1. The exploitation of these forests by the shelterwood and the single selection method did not cause any destruction.

Keywords

• beech
• control parcel
• evaluation
• exploited area
• managed