Analysis of habitat and structural characteristics and optimization of silvicultural measures in coppice beech forest at the site "Musići" near Sarajevo
DOI:
https://doi.org/10.54652/rsf.2009.v39.i1.170Keywords:
beech coppice, structure, site conditions, high forest, selective thinningAbstract
UDK 630*23/.24:582.632.2(497.6 Sarajevo)
630*111/.114:582.632.2(497.6 Sarajevo)
Coppice beech forests in Bosnia and Herzegovina cover 351.000 hectares and occur mainly in very gut soil condition. The high productive potential of the sites is not adequately utilized. Therefore, in the second half of last century worked on conversion in high forest. All methods were based on direct and indirect conversion. Researches show that the direct conversion of beech coppice in high forest should be avoided. Indirect conversion with optimization of tending operations can give good results. For beech coppice forests younger than 60 years recommended selective thinning with selecting 200-300 trees which are gut spread by area. For older than 60 year beech coppice forests they recommended uniform system. For better orientation for the way of conversion coppice forests in high forests it is need to know stand condition of coppice forests. Of stand and structural indicators are the most important: age of coppice forests, stand condition of beech coppice forests, generation of shoots, number of seed trees, natural regenerations. Beside them is necessary to know the degree of canopy. Light as an environmental factor is of decisive importance for microbiological activity in soil, humus decomposition and occurrence of natural regenerations. Beech coppice forest at the site Musici, based on analysis of these factors, there are optimal conditions for starting conversions in high forest. It should carry out selective thinning with cutting bad shoots from stump.
Beech coppice forest at the site Musici was formed cutting high forest and shoots at upper level belong to the first generation. Therefore, it should be treated with a high forest. The most number of shoots are at the lowest diameter classes and that number is reduced to a larger diameter classes and a structure similar of uneven-aged type of forest or usually termed "selection forest".
In the beech coppice forest at the site Musici near Sarajevo, there are the most of stump with one or two shoots. Maximal numbers of shoots from stump are 10, and there are only two stumps with 10 shoots.
On two experimental plots were carried out in two ways thinning as follows: selective thinning and selective thinning with cutting of bad shoots from stump. By selective thinning intensity of cutting by the number of trees was 11,5 % and by selective thinning and cutting of bad shoots 32,8 %. Intensity of logging by tree basal area was by selective thinning 26,9 % and by selective thinning and cutting of bad shoots from stump 29,8 %.
Based on the above we can conclude, that during work on the thinning it is desirable addition of selective thinning, reduced number of bad shoots from stump. So it reduces competition for water and minerals for selected trees in beech coppice forest. In addition, the more light reaches beech coppice forests which improves the microbiological activity and occurrence of natural regenerations
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