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ŠUMARSKI LIST 1-2/2010 str. 56     <-- 56 -->        PDF

M. Štimac: UTJECAJ NJEGE ŠUMA NA STRUKTURNE ZNAČAJKE LIČKIH PANJAČA Šumarski list br. 1–2, CXXXIV (2010), 45-54


SUMMARY: Our research determined structural elements of different coppice
types in Lika five years after they were tended with thinning. Coppices in
the region of Lika are characterized by a low degree of applied tending operations
and inaccessibility caused by the lack of forest roads. Four morphological
types can be differentiated: transitional coppices, typical coppices, coppices in
regression and thickets. Field measurements were undertaken in five permanent
sample plots. Structural stand elements in these plots were measured at the end
of the vegetation period in 2007. Total measurements of breast diameters of all
trees were performed by diameter class, storey, tree species and origin (generative,
vegetative), and height samples were recorded and increment cores taken
for increment assessment separately for seed trees and sprouts from stumps.
Seed trees show significantly higher values of structural elements. The fact that
seed trees manifest higher productivity and vitality clearly indicates that they
should be silviculturally favored regardless of coppice type. Intensities and volumes
of the next thinning operation will depend on the average age volume increment
and stand age, as well as on the total stand volume at the end of the
thinning cycle. In order to increase the basic volume and achieve stand stability,
the volume of the next thinning operation should amount to 40–45 % of the ten-
year current volume increment.


Key words:Forest tending, coppice, stand structure, Lika