CLIMAT AND OROGRAPHIC IMPACT ON VOLUME INCREMENT OF THE FORESTS OF BEECH, FIR AND SPRUCE ON LIMESTONE AND DOLOMITE IN FEDERATION OF BOSNA AND HERZEGOVINA
UDK 630*56:630*11(497.6) 631.442.2:630*56(497.6) Research results of the stand volume increment changes in mixed forests of beech, fir and spruce on limestone and dolomite in Federation of Bosnia and Herzegovina (FB&H), is presented in this work. Impact of different factors to volume increment value was investigated: habitat quality, values - indicators of structural characteristics particular forest stands, and orographic characteristics if the terrain. Impact of climate differences was investigated trough position of the forests stands in particular ecological-vegetation regions in B&H. Research was done on example of 799 forest stands, trough complex methods of multiple regression analyses, and variance analyses (ANOVA), The results shows that volume increment of the forest stands, besides taxation values: basal area, relative share species in volume, average diameter of the trees, medium height of the trees 50 cm in diameter, significantly depend of the altitude and belonging to particular ecological-vegetation regions in B&H. The result of the analyses is complex model for forest stand volume increment assessment. It was concluded that volume increment of these forest is higher about 1 m3/ha, now than 50 years ago, when very similar investigation was done in the same forests.