broj: 1-2/2005
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| IZVORNI ZNANSTVENI ČLANCI | ||
| Idžojtić, M., R. Pernar, Z. Lisjak, H. Zdelar, M. Ančić | UDK 630* 442 (001) | |
| Hosts of Yellow Mistletoe (Loranthus europaeus Jacq.) and Intensity of Infestation on the Area of the Forest Administration Požega pdf HR EN | 3 | |
| Martinić, I., M. Šporčić | UDK 630* 307 + 120 (001) | |
| Ecological aspect of maintenance of forestry mechanisation pdf HR EN | 19 | |
| Beuk, D. | UDK 630* 156 (001) | |
| Effects of the aggression on the Republic of Croatia on the game and hunting management of the Game breeding enclosure Kunjevci pdf HR EN | 29 | |
| PRETHODNO PRIOPĆENJE | ||
| Zelić, J. | UDK 630* 611 + 521 | |
| A Contribution to Modelling the normal condition of Regular Middle-Aged Beech Stands (EGT–II–D–10) pdf HR EN | 51 | |
| PREGLEDNI ČLANCI | ||
| Ballian, D. | UDK 630* 165 | |
| New Evidence in Knowledge of the Silver Fir (Abies alba Mill.) from the Mountain of Biokovo pdf HR EN | 63 | |
| STRUČNI ČLANCI | ||
| Prgin, D. | UDK 630* 114.3 + 432 + 241 | |
| Aleppo pine (Pinus halepensis Mill.) first-class species to create forests on the Mediterranian karst pdf HR EN | 71 | |
| Summary: Due to insufficient knowledge on the value of Aleppo pine forests of our Mediterranean karst, there is a prevailing public opinion that this species is even harmful and should not be planted any more. This is particularly the case when speaking of forest fire causes. Such opinions are based on ignorance of Aleppo pine properties and the real causes of forest fires. A typical Mediterranean tree, Aleppo pine also grows on our Adriatic coast and islands. Introduced more than a thousand years ago, it can be regarded as an autochthonous species of Dalmatia. The palingenetic research on the island of Mljet discovered three thousand years old Aleppo pine pollen. Outside its natural areal, Aleppo pine grows in cultures, parks and tree avenues. Thanks to new afforestation and the natural ability of easy spreading and regenerating upon burnt areas, this tree increasingly conquers new land. According to the 1984 status, it is considered that there are around 40,000 ha of Aleppo pine forests on the Croatian coastland. The afforestation of the Dalmatian degraded karst coastal belt has been successfully carried out with Aleppo pine. The first cultures were raised about 120 years ago both with naked-root seedlings and seeds. Every year Aleppo pine tree sheds large quantities of needles, which gradually fill the stone crevices and cover the lithosoil. After their decomposition in the processes of humification and mineralisation, new fertile forest soil is created. In the areas where soil has been blown away by wind and eroded by water for centuries, Aleppo pine presents a first-class ameliorator of the naked karst. With improved soil quality, adult Aleppo pine stands with their dead litter cause the physical, chemical and biological changes in the soil. They also protect the soil from excessive insulation, decelerate evaporation and drainage of rainwater, while its needles retain the moisture in the soil. They favourably influence soil temperature, and protect the minerals against washing away by increasing the soil capacity for water and air. The humus layer is the home to the insects and worms that take part in soil processing. All these factors create favourable ecological conditions for the growth of other plant species. Thus, holly oak and other Mediterranean species spontaneously appear under Aleppo pine crowns, constituting a stable climatogenetic forest association. Based on the many years of my own experience, I can say that the site class of the soil under Aleppo pine stands improves so much that it turns into the following higher site class after the period of one hundred years. Aleppo pine thrives upon all expositions. Young plants resist drought well. Owing to abundance of seed, adaptability and resistance of young plants, this tree conquers new ground and spreads naturally. It regenerates excellently upon burnt areas, and demonstrates high flexibility upon different soil types in the Mediterranean vegetation belt with semi-arid and sub-humid climate. Aleppo pine stands are vulnerable to forest fire when young. Older stands that have been regularly tended, cleared and thinned remain undamaged. The applied forest management method is the basic measure for fire protection. A well-tended forest is a natural barrier to the spreading of forest fire. Aleppo pine timber can be used as firewood, small technical wood in agriculture, pulpwood and mine timber, for interior carpentry, pilots, staffs, panelling, etc. In the past, resin collection was practised in Dalmatian pine forests, while pine timber was used for the production of cellulose. Widely used in other Mediterranean countries, Aleppo pine timber is today almost entirely absent from any wood processing in Croatia. The average production of Aleppo pine wood mass on Croatian Adriatic coast is between 3m3 and 4m3 per ha, which is between 120,000m3 and 160,000m3 a year on the total area of 40,000ha2. With regular silvicultural operations and thinning in these stands, the diameter and volume increment would increase, so that the production of wood mass could reach between 5m3 and 6m3 per 1 ha, while an annual 200,000m3-240,000m3 of wood mass would be produced from the total area. Aleppo pine forests are a part of Dalmatian Mediterranean identity. Planted along the coast and on the islands, they have made these parts the most precious space of our Adriatic coast. They surround the hotels and other tourist settlements and camps. The contribution of Aleppo pine forests to the formation of landscapes of exceptional beauty is enormous. It affects culture, ecology, environment and society. Among the many fine illustrations of this are the Aleppo pine forests raised on the island of Obonjan, the Raduč peninsula and Zaton near Zadar. Although the mentioned values of these forests are more than obvious, the current land plans have converted Aleppo pine forestlands into building areas for future tourist development, giving thus legal licence for destroying these forests. Natural resources are indispensable for any development of tourism. In order to prevent the destruction of these natural resources, the forests used for recreation and landscaping should legally retain their status, while engineering projects may be developed so that they do not endanger forest survival. A map of environmental susceptibility should be made before any development is begun, and the degree of coexistence of the planned objects (and their capacities) and the natural environment should be examined and assessed. Only expert forestry organisations should manage these forests. Owing to their exceptional value, the forests intended for recreation and landscape planning must not be converted into building sites through land planning legislative. They must further on be treated as forests, which should be regulated by law. Insufficient education, a current problem of today’s world, is another cause of adverse attitude toward forests and their values. Key words: Aleppo pine; degraded karst; forest fires; forest soil; forest tending; landscape.; recreation | ||