Analysis spatial distribution trees in forest stands

The analyses of the horizontal distribution of trees have not been used in the research of stand structure in Serbia?s forestry to date. Taking into account the high economic and ecological applicability of such information, this paper deals with the numerical description of the form of spatial distribution of trees. The applied methods are the so-called methods of statistical distributions and dispersion index. The study results in the all-aged mixed stand of fir and beech and in the mature pure stand of fir on the mountain Goc show that all trees together, but also the trees per species, are predominantly randomly distributed in space, with the tendencies towards a weaker or stronger aggregation or uniformity. Based on the identified spatial distribution of trees, it can be concluded that in the greater part of the study stands the environment is homogeneous and the basic conditions of tree growth are uniform. This points to the fact that real assessment of growth development and the competition of fir and beech, due to the identified absence of a marked competition for the basic growth factors, emphasizes, primarily, the quantification of the competition for growth space. . U istrazivanjima sastojinske strukture u sumarstvu Srbije do sada nisu koriscene analize horizontalnog razmestaja stabala. Imajuci u vidu veliku privrednu i ekolosku aplikativnost posedovanja ovakvih informacija, u radu se tretira problematika numericke deskripcije oblika prostornog rasporeda stabala. Korisceni su tzv. metodi statistickih distribucija i indeksa disperzije. Rezultati istrazivanja u raznodobnoj mesovitoj sastojini jele i bukve i zreloj cistoj sastojini jele na planini Goc pokazali su da se sva stabla zajedno, ali i razdvojeno po vrstama, rasporedjuju pretezno slucajno u prostoru, sa tendencijama ka slabijoj ili jacoj agregaciji ili ravnomernosti. Na osnovu utvrdjenog prostornog razmestaja stabala izvodi se zakljucak o homogenosti okoline i jednakosti osnovnih uslova za rast stabala na vecem delu istrazivanih sastojina i ukazuje na cinjenicu da realno sagledavanje tokova rasta i konkurencije jele i bukve, zbog konstatovanog nepostojanja izrazenije medjusobne konkurentnosti u pogledu osnovnih faktora rasta, pretpostavlja, pre svega, kvantifikovanje konkurencije u odnosu na velicinu prostora za rast. .