DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 7-8/2003 str. 71 <-- 71 --> PDF |
J. Zelić, B. Puaća: PRILOG ODREĐIVANJU NORMALA ZA MJEŠOVITE PREBORNE SASTOJINE ... Šumarski list br. 7-8, CXXVII (2003). 389-402 od 90 mVha može se prihvatiti daje uravnotežena te vertikalne strukture postići optimalni volumni prida će se na istoj jediničnoj površini s normalnim rast i obnova sastojine, brojem stabala i normalnom temeljnicom, stalne LITERATURA: - References Božić, M, J. Čavlović, 2001: Odnos dominantne Naj virt, Ž., B. Puača, 1996: Osnova gospodarenja visine, dimenzije sječive zrelosti i normalne drv- (1996. - 2005.), Gospodarska jedinica "Zapadni ne zalihe u prebornim sastojinama. Šum. list br. Papuk II". Požega. 1-2: 9-18, Zagreb. Pranj ić, A.,N. Lukić, 1997: Izmjera šuma. Sveuči- K1 e p a c, D., 1991: Novi sistem uređivanja prebornih liste u Zagrebu, Šumarski fakultet, Zagreb. šuma. Poljoprivredno šumarska komora SR Hr- špiranec, M., 1975: Drvnogromadne tablice. Rad. vatske, Zagreb. šumar, inst, 262 str., Jastrebarsko. Klepac,D., 1963: Rast i prirast šumskih vrsta drveća špiranec, M, 1976: Tablice drvnih masa jele i smre- i sastojina. Nakladni zavod, Znanje, Zagreb. ke Broj 29, Rad. Šumar, inst., 119 str., Jastre- Klepac, D., 1965: Uređivanje šuma. Nakladni zavod barsko. Znanje, Zagreb. Meštrović, Š., G. Fabijanić, 1995: Priručnik za uređivanje šuma. Ministarstvo poljoprivrede i šumarstva Hrvatske, Zagreb. SUMMARY: In the past, mixed stands of beech and fir on Papuk (Abieti- Fagetum panonicum Rauš 1969), were managed as regular high stands, while natural regeneration was done with the shelterwood cutting method. Biological and ecological properties of beech and fir indicate the possibility of selection management. Such stands are ecologically more stable and better capable of utilising soil and climatic characteristics. The high ecological stability and biological properties of beech and fir selections stands result in an optimal production of stem wood and in balanced management. Of all biometrical management characteristics, the following are of utmost importance: dominant tree heights, tariff series, crop maturity dimension and current annual stand increment. Compartment 56a, Management Unit "Zapadni Papuk II" covering an area of 15.10 ha, with a species mix of 53 % of beech and 47 % of fir was taken as an example of management with a mixed stand of beech and fir on Papuk. The distribution of beech and fir trees by hectare and diameter classes is shown in Table 1 and Graph 1. The dominant heights of mixed stand of beech and fir were defined using the "Swedish method" for mean breast diameters increased for standard deviation (ddom = ds + a). The crop maturity dimension was determined for 60 cm of breast diameter (German diameter degree 57.5 cm). The mean breast diameter of beech in a stand is 29.97 cm with standard deviation of 16.10 cm, while that of fir is 42.65 with standard deviation of 17.87. The stand height curves of beech and fir in Compartment 56a were equalised with exponential functions (Graph 2, a): h = 38,6264 e - l4´"56´d + 1,3, for beech h= 37,2016e 1W"° d+ 1,3, for silver fir 401 |