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V. Krejči, T. Dubravac: MOGUĆNOST 1 OPRAVDANOST OPLODN1H SJEČA U BUKOVIM ŠUMAMA ... Šumarski list br. 9 10. CXXVII (2003). 449-456 LITERATURA - References Bertović, S., D. Cestar, V. Hren, Z. Kovače - Safar, J., 1962: Problem i pojam skupinastog gospo vić, J. Martinović, 1971: Kvalitativna i kvanti- darcnja. Šum. list 8, 257-269, Zagreb, tativna produkcija bukovih šuma u zapadnom gafar, j. ? \962: Oplodna ili preborna sječa u bukovim dijelu Hrvatske. Rad. Šumar. inst. 18, 1 48, Za- šumama. Osvrt i razmatranja o načinu uzgajanja 8reb- na dinarskom području. Šum. list 9-10, 340-347, Cestar , D., V. Hren , 1967: Prilog načinu doznake Zagreb. stabala kod prebornog gospodarenja. Šum. list § afar, J., 1964: Kakvoća bukovog mladika u sastoji11- 12, 452-455, Zagreb. nam a dinarskih planina. Šum. list 7-8, 307-315, Cestar, D., M. Glavaš, M. Halambek, M. Ha- Zagreb. rapin,V. Hren, J. Martinović,Z.Pelccr, šafar, J., 1967: Funkcionalno oblikovanje bukovih 1986: Bukva i bukove šume Hrvatske. (Beech sastojina na Dinaridima. Šum. list 5-6, 198-204, and beech forests in Croatia). Rad. Šumar. inst. Zagreb ^´ ´ fa Program gospodarenja g.j, "Učka" 1985.-1994. IVI i las , B., 1958: Gospodarenje šumama primorske bukve. Šum. list 3^1, 81-94, Zagreb. SUMMARY: The paper indicates the possibility and justification of the application of the shelterwood cutting method in the beech forests of Gorski Kotar, Lika and Hrvatsko primorje (maritime region), where they cover considerable areas and have an important forest-management and ecological role. For several years, in two climatozonal communities, i.e. a maritime beech forest (Fagetum croat. seslericetosum Ht.) and a mountain beech forest (Tagetum croat. montanum Ht.), results were monitored on the reestablishment of beech stands when applying the shelterwood cutting method in small groups on large areas. The principle of the group selection system in management of even-aged forests on small areas was investigated in the beech maritime forest, in the Management Unit "Učka ", Compartment 24. An area of 1.4 ha was covered applying the final cut in 1987, on 5 groups in the Compartment 24, encompassing 23 ha. The average age of young beech growth in the middle of the group was 9 years, mean height 1.1 m, with the participation of 90 000 young beech trees per hectare. The second cutting was performed in 1999, on the same groups, on 5.65 ha, and amounted to 25 % of the compartment area. In 2002, measurement was carried out of the state of young growth trees in the same groups (Table 2, Fig. 3); in the middle of the group (final cutting), at the half of the group radius and on the border of the group, which showed markedly good development progress with regard to the number and quality of young growth. Knowledge on the numbers and development progress in the young beech trees in the 5 monitored groups, showed that the management and oncoming cuttings (2009 and 2019) should be performed by the same principles. Having analysed the two final group selection cuttings in 1987 and 1999, as presented in Table 3, it can be concluded that the compartment will have been completely reestablished with the cutting in 2019. Due to the fact that the compartment is located in the "Učka" Nature Park, where the forest, apart from management, also has other functions, we consider this method of management and reforestation essential. The transition from selection management to even-aged method of beech management, by applying the shelterwood cutting system on large areas was |