DIGITALNA ARHIVA ŠUMARSKOG LISTA
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M. Prka, T. Poršinsky: USPOREDBASTRUKTURE TEHNIČKE OBLOVINE JEDNODOBNIH BUKOVIH ...Šumarski list br. 1–2, CXXXIII (2009), 15-25 Prka,M., 2005: Čimbenici kakvoće bukovih stabala iPrka,M.,A. P. B.Krpan,2007: Problem određivastruktura sortimenata iz prorednih i oplodnihnja sortimentne strukture jednodobnih bukovih sje čina Bjelovarske Bilogore. Disertacija, Šu -sastojina. Šumarski list 131(5–6):219–236. mar ski fakultet Sveučilišta u Zagrebu, 42–62. Prka,M., 2008: Određivanje sortimentne strukture Prka,M., 2006: Značajke doznačenih bukovih staba-jednodobnih bukovih sastojina primjenom nor la po vrsti sijeka u sječinama Bjelovarske Bi lo -me HRN EN 1316-1:1999. Šumarski list gore i utjecaj na strukturu sortimenata. Šumarski132(5–6): 223–238. list 130(7–8): 319–329. Štefančić,A., 1998: Udio drvnih sortimenata u Prka, M.2006:Visina i čistoća debla bukovih stabalavolu menu krupnog drva do 7 cm promjera za po vrsti sijeka i postotak tehničke oblovine uobič nu bukvu u jednodobnim sastojinama. Šu deb lima i krošnjama stabala s obzirom na primi -mar ski list 122(7–8): 329–337. je njeni standard. Šumarski list 130 (11–12): Vondra, V.,1995: Usporedne analize postojećih 511–522. modela za procjenu očekivanih obujmova Prka,M., T.Poršinsky,2006: Utrošci vremena usječivog etata u jednodobnim šumama u te renskim izmjerama namijenjenima utvrđiva-Hrvatskoj – di jagnostička studija. Zavod za nju sortimentne strukture bukovih sječina. Novaistraživanje u šu mar stvu, Šumarski fakultet meh. šumar. 27: 33–40.Sveučilišta u Za gre bu, 1–47. SUMMARY: This paper deals with research and comparison of technical roundwood structure in assortment tables compiled in accordance with the requirements of the Croatian standards for forest harvesting products of 1995 and the Croatian Standard Hardwood round wood – Qualitative classification – Part 1: Oak and Beech HRN EN 1316-1:1999. The research was carried out in the Management Unit „Bjelovarska Bilogora”, Forest Office Bjelovar, Forest Administration Bjelovar. All investigated compartments pertain to ecological management type II–D–11 and management class BEECH with a 100-year rotation. The age of the investigated cutblocks ranged between 59 and 91 with thinning, between 94 and 110 with preparatory cut, between 100 and 112 with seed cut and between 98 and 114 with final cut. The group of sample trees was formed by random selection of approximately 10% of marked trees. The sample for compiling assortment tables in accordance with the requirements of the Croatian standards for forest harvesting products of 1995 involved 3001 sample trees (table 1), and assortment tables were compiled in accordance with the requirements of the Croatian standard HRN EN 13161: 1999 based on 3082 sample trees (table 2). Share tables of wood assortments determined in accordance with these two standards were developed, for various reasons, separately for thinnings and preparatory felling, and separately for seeding and final felling. By processing sample trees in accordance with the requirements of the Croatian Standards for Forest Harvesting Products of 1995, 10,098 pieces of technical roundwood were obtained, whose total volume was 4,337 m3(without bark). In accordance with the requirements of this Standard, total processed and classified net volume of all sample trees was 7,469 m3. By bucking sample trees in accordance with the requirements of the Croatian Standard Hardwood round wood – Qualitative classification – Part 1: Oak and Beech HRN EN 1316-1:1999, 13,507 pieces of technical roundwood were obtained, whose total volume was 6,010 m3(without bark), and in accordance with the requirements of this Standard, the net volume of all sample trees was 8,931 m3. Due to substantial differences, structural comparison of technical roundwood classified in accordance with the requirements of these two standards is |