DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 1-2/1999 str. 30 <-- 30 --> PDF |
D. Baričević: EKOLOSKO-VEGET. PROMJENE U ŠUMAMA HRASTA LUŽNJAKA NA PODRUĆ. G.J. "ŽUTICA" Šumarski list br. 1 -2, CXXIII (1999), 17-28 eating increased humidity and a deteriorated site occurred: Frangula alnus, Deshampsia caespitosa, Myosotis scorpioides, Galium palustre, Peucedanum palustre, Juncus effusus, Polygonum hydropiper, Iris pseudocorus, Lytrum salicaria, Carex elongata, Carex elata and others, while mesophyllic elements of the Fagctalia order are absent. This, as well as the overall destabilization of the forest ecosystem "Žutica ", have a synergistic nature. However, the main causes lie in inadequate regulations of river courses and badly done melioration, and the related drop in groundwater levels and changes in the natural rhythm of floods. Furthermore, hard roads with bad draining systems built through the site have led to waterlogging of the terrain. Future development of the vegetation in the studied area will depend mainly on the human influence on this ecosystem. Areas under more humid associations are expected to continue expanding. However, despite a significant negative influence of various factors on the ecosystem, a natural succession and development of forest associations will follow its normal course, that is, will go from more humid towards drier associations. Site and stand degradation can only be curbed, and a return to a normal condition and progression achieved, through a multidisciplinary approach to this and other similar problems. A vegetation map of forest associations in the Management Unit "Žutica " on a scale of 1: 25, 000 (attachment) was drawn up on the basis ofphytocoenological and other research. It will provide a good basis for planning and carrying out activities within the ecosystem (growth, tending, etc) aimed at achieving sustainable management, ecological stability, biological diversity and optimal production of timber mass. |