Wood assortment in thinning raw material of scots pine forest plantations (Pinus sylvestris L.)
DOI:
https://doi.org/10.54652/rsf.2005.v35.i1.198Keywords:
Scots pine, forest plantations, thinning, forest wood products, tables of assortmentsAbstract
UDK 630*8:582.475
674.032.475.4
In a broader sense, forest plantations represent every artificially established forest by way of seeding and/or planting. All forest experts agree that establishing and caring for forest plantations should be carried out with an increased intensity because the long-term aim of forest management has economic and environmental justification. This work therefore, deals with the practical aspect of this problem, and accordingly with verification of the exact assortment of the forest wood products in the increasingly thinning raw material of the Scots pine forest plantations.
The research was carried out at the territory of the “Unsko-sanske šume”, the timber management company at the forest plantation “Dubrave” near Cazin.
In this plantation we conducted the Schädelin's selective thinning in two phases. In the first phase we selected «future trees», and in the second we marked the trees for removal from the plantation. For the removal we only marked those trees, which represented the strongest concurrence to the chosen «future trees», based on their place and growth in the plantation. In majority of the cases we only marked one tree for removal and rarely two. After cutting of the marked trees, we formed a sample of 140 trees by random choice for determining the percent of wood assortment ratio in the total mass in relation to diameter at the brest height (DBH) and technical quality class. The influence of the considered factors at the percentage ratio of the wood assortment was determined by regression analysis and we came up with appropriate tables.
The analysis shown that the surveyed elements have logical impact and that they are approximate to results of other authors. The results may be used as assortment tables with very good accuracy for description of similar stand and habitat conditions, and with acceptable accuracy for other stands and habitat conditions in plantations of Scotch pine for the surveyed span of the brest diameter between 15 and 35 cm.
References
Jugoslovenski standard za oblast šumarstva-JUS. Jugoslovenski Zavod za standardizaciju.Beograd (D.A0.101, 1969.;D.B0.020,1969.; D.B0.022, 1984.; D.B1.023, 1980.; D.B2.020, 1982.; D.B4.029, 1979.; D.B5.020, 1984.; D.B5.025, 1984.)
MATIĆ, V. ET AL. (1971): Stanje šuma u Bosni i Hercegovini prema inventuri šuma na velikim površinama u 1964.-1968. godini. Šumarski fakultet i Institut za šumarstvo. Posebna izdanja, broj 7. Sarajevo.
MATIĆ, V. (1977): Metodika izrade šumskoprivrednih osnova za šume u društvenoj svojini na području SR BiH. Šumarski fakultet i Institut za šumarstvo. Posebna izdanja, broj 12. Sarajevo
MEKIĆ, F. (1999): Sadašnje stanje i mogućnosti povećanja kvaliteta naših šuma. Savjetovanje Šumarstvo Federacije Bosne i Hercegovine, Zbornik radova. Federalno Ministrstvo poljoprivrede, vodoprivrede i šumarstva Bosne i Hercegovine, str.34-48.
PAVLIČ, J. (1973): Istraživanje zavisnosti procentualnog učešća sortimenata smrče od debljine, visine i kvaliteta stabla. Radovi Šumarskog fakulteta i Instituta za šumarstvo u Sarajevu, knj.17., sv.1-3.
PAVLIČ, J.(1999): Metodika premjera i registrovanja podataka u jednodobnim šumskim zasadima smrče (Picea abies Karst.), bijelog bora (Pinus sylvestris L.) i crnog bora (Pinus nigra Arn.) u Bosni i Hercegovini. Radovi Šumarskog fakulteta u Sarajevu, br.1., knjiga XXIX, str. 33-60.
SCHÄDELIN, W. (1942): Die auslesedurchforstung als erziebhungsbetrieb höchster wertleistung. Prevod Pataky, Lj., 1956, Narodni šumar, Sarajevo
VUKMIROVIĆ, V.(1971): Istraživanje učešća sortimenata bukve u čistim i mješovitim bukovim sastojinama u Bosni. Sortimentne tablice. Radovi Šumarskog fakulteta i Instituta za šumarstvo u Sarajevu, knjiga 14., sv.4-6. str.33-66.
