|ORIGINAL SCIENTIFIC PAPERS|
|Defining Assortment Structure of Even-Aged Beech Stands According to Standard Hrn En 1316-1:1999 pdf HR EN||223|
|Summary: The subject of research was probability of appearance of technical roundwood timber assortments in trees according to type of felling, as well as the difference between shares of technical roundwood timber assortments according to diameter class and type of felling. On the basis of the research results, new assortment tables were made according to Croatian Standards HRN EN 1316-1:1999. Research was carried out on a sample consisting of 787 trees in thinning felling, 788 trees in preparatory felling, and 862 trees in seeding felling and 645 trees in final felling. An overall number of 3082 exemplary trees were included in the research. The age of the felling areas studied was between 59 and 91 years in the preliminary yield (thinning), 94 to 110 years in preparatory felling, 100 to 112 years in seeding felling, and 98 to 114 years in final felling areas.|
Timber assortment tables that take into consideration the type of felling as one of the inputs, enable a more reliable estimate of assortment structure of the felling area and more precise planning of timber mass marked for felling. In this case, as a distinguishing factor, we took the selection criterion for marking trees for felling which is applied for the types up to, and including, the preparatory felling. For that reason, timber assortment tables were made separately for thinning and preparatory felling, and separately for seeding and final felling.
Seeding and final felling show by ca 11 % higher shares of top quality timber assortment (A and B class) than thinning and preparatory felling. On the other side, thinning and preparatory felling show by ca 11 % higher shares of technical roundwood assortment of lower quality (C and D class) than seeding and final felling.
Key words: assortment structure; common beech; Croatian Standard HRN EN 1316-1:1999; even-aged beech stands
|Goglia, V., J. Žgela, I. Đukić||UDK 630* 304 + 964 (001)|
|The Effectiveness of Anti-Vibration Gloves: Part II pdf HR EN||239|
|Degmečić, D., M. Bićanić||UDK 630* 156|
|Body Weight and Development of Roe Deer (Capreolus capreolus L.) in Eastern Slavonia and Baranja pdf HR EN||245|
|Najvirt, Ž., A. Miličević, Š. Meštrović||UDK 630* 181.1|
|Area of the Kermes Oak (Quercus coccifera L.) on the Western Part of Peninsula Pelješac pdf HR EN||253|
|Španjol, Ž., K. Biljaković, R. Rosavec, D. Dominko, D. Barčić, D. Starešinić||UDK 630* 432|
|Forest Fires and Physical Models pdf HR EN||259|