DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 11-12/2003 str. 70 <-- 70 --> PDF |
A. Tomašević, B. Kulić, Ž. Španjol, T. Kružić: RAZVOJ SASTOJINH I MLL10RAT1VNA ULOGA KULTURE ... Šumarski list br. 11-12, CXXVII (2003), 579-596 pubescensj (2 - 12,000 plants/ha) and hop hornbeams fOstrya carpinifolia) (600 - 2,500 plants/ha) have been noted on the sun-exposed side, as well as a considerable number of buckthorn (Hhamnus intermedius) (106,000 - 245,000 plants/ha) and dogwood (Frangula rupestrisj (599-19,000 plants/ha). On the shaded side, hop hornbeam fOstrya carpinifolia,) is rather rare, which is also the case with pubescent oak fQuercus pubescensj, while Montpelier maple (Acer monspessulanum) is relatively abundant (600-4,300 plants/ha). Buckthorn (Rhamnus intcrmedius) was not found in this part of the culture (plots 3 and 4), but there was a considerable number of blackthorn (Prunus spinosaj (200 - 7,500 plants/ha). Turkey oak rQuercus cerrisj was also found in several locations. The distribution of young growth and young plants according to height classes is a good indicator of the conditions in which these plants occur and develop. It points to a very intensive progressive succession of autochthonous vegetation. The tables show that the span in terms of height classes ranges from 25 to 500 cm, while the number of trees in higher classes indicate better conditions of natural regeneration. Since not one young tree of black pine was found in the plot, it can be concluded that these conditions are not suitable any more and that black pine has performed its ameliorative role and created conditions for the arrival of autochthonous vegetation. On the basis of the real condition in the field and the problem of maritime karst forests, our primary task involves the following: Regenerate the existing pine cultures, which will, as pre-cultures, create the conditions for the return of autochthonous elements in the foreseeable future. Protect the cultures from abiotic impacts, cattle and man, as well as fires and insects. Open the canopy slowly and carefully in order not to lose young deciduous growth. Gradually transform the existing autochthonous young growth into permanent stands with more valuable species (pubescent oak (Quercus pubes- cens), hop hornbeam (Ostrya carpinifolia), Manna ash (Fraxinus ornus) and others). Forest functions of general benefit cannot be expressed in numbers that would describe these functions in more convincing terms than words. These functions are only noticed when incalculable damage has occurred with far- reaching consequences. Only the most important of these indirect benefits are mentioned here: protection of the soil from erosion and leaching the impact of forests on the climate - protection of settlements and communications from winds - tourism and recreation For this reason, these functions should be carefully guided towards their economic importance, which includes their tourist-recreational and aesthetic purposes, while their product, wood volume, should be economically utilised. 596 |