|ORIGINAL SCIENTIFIC PAPERS|
|Pintarić, K.||UDK 630* 236 (Fagus sylvatica L.) 001.|
|The Analisis of Structure and Quality of the Natural Beech Saplings in Some Beech Forests in Bosnia and Herzegovina pdf HR EN||627|
|Popijač, M.||UDK 630* 561 + 188 (Quercus robur L. i Fraxinus angustifolia Vahl) 001.|
|The Diameter Growth of the Peduncled Oak and the Field Ash in the Forest on one Part of the River Česma Basin pdf HR EN||637|
|Ballian, D.||UDK 630* 232.3 + 165 (Abies alba Mill.) 001.|
|Analysis of Growth of the Seedlings of Silver Fir (Abies alba Mill.) from Different Populations by Way of Half-sib Offspring pdf HR EN||649|
|Krejči, V., Dubravac, T.||UDK 630* 226 (Quercus ilex L.)|
|Regeneration of Coppice Forests of Evergreen Oak (Quercus Ilex L.) by Seed Felling pdf HR EN||661|
|Summary: Management coppice forests of evergreen oak (Quercus ilex L.) which are under the management of Public enterprise “Hrvatske šume” occupy an area of 10 169 ha. Clear feeling in these forests has been cancelled and rotation of 80 years prescribed, which is a period in which coppice forests have to be naturally converted into seed forests.This paper emphasises the problems which occur during natural regeneration of evergreen oak forest by transformation into a higher stand form, i.e. into stabile productive seed forest.|
The experiment was established and the first measurement carried out in autumn 1997 on the territory of Forest management unit Buzet, Forest enterprise Pula, Management unit 71a, following the thinning (regeneration felling) in preserved evergreen oak coppice forest during the winter of 1996/97, which resulted in the decrease of crown soil cover to 57 %. Measurement of young crop indicates to a highly satisfactory number of 83.600 units of young plants of evergreen oak per hectare, up to 30 cm of height. However, already in the first year following the felling there were numerous and, considering the height, dominating coppice shoots of evergreen oak, of which 68 % were in a height class 30 cm and higher in this initial year. In addition, even more aggressive coppice laurel appeared, so in the first year, in both species, there were shoots higher than 150 cm.
Measurement carried out in 1998 showed that only 2 % of evergreen oak trees grown from seed, grew into height class of 31-60 cm. In the third year following the thinning, 10% (8750) of evergreen oak young crop belonged to 31-60 height class, which is an indication of the possibility of accomplishing the desired aim – stabile seed forest of evergreen oak. At the same time. coppice shoots of evergreen oak (87 %) were higher than 30 cm and the same happened with coppice shoots of laurel. The share of bushes in overall woody population in 1997, 1998 and 1999 was 23%, 31 % and 40 %, respectively. The condition of young crops of evergreen oak grown from seed and coppice on control, unthinned plots points to the fact that crown soil cover of 85 % and more is a limiting factor of growth.
Based on the measurement results, it can be concluded that the principle of regeneration felling, regarding the level of soil preservation and considerably frequent seed production, gave positive results. Measurement results point to a big problem of further survival of young crop of evergreen oak grown from seed, due to higher share of bushes and coppice shoots. We have to point out to the necessity for intensive care, which is a precondition for accomplishing the ultimate goal – seed forests of evergreen oak.
Key words: evergreen oak; laurel; natural regeneration; seed felling; young crop
|Pentek, T., Poršinsky, T.||UDK 630* 904|
|The Turkish Forestry pdf HR EN||669|
|Meštrović, Š., Žaja, D., Đurđević, Z.||UDK 630* 233 + 116|
|Protection of Seedlings During Reforestation pdf HR EN||687|
|Frković, A.||UDK 591.5 (Herpestes javanicus auropunctatus)|
|Mongoose on the Island of Mljet pdf HR EN||693|