DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 13/2005 str. 134 <-- 134 --> PDF |
S. Perić. V. Topic. Ž. Orešković. R. Maradin: BIOLOGICAL CONTROL OK EXCAVATIONS AND DUMPS ... Šumarski list SUPLEMENT (2005), 120-132 A 60 cm-80 cm-layer of earth taken from the Rovanjska earth dump will be applied upon the levelled area (Photo 4). Forest trees and shrubwood will be planted over these plateaus between the two dumps in an area of 13,000 m , i.e. 1.3 ha (0.6 ha earth dump + 0.7 ha waste dump). The seedlings considered for this biological amelioration are all above-listed tree and shrub species. The planting distance of 2 m x 2 m in rows for both trees and shrubs will be applied. The seedlings will be planted in triangles (Figure 3). Planting of brush climbers on the slopes of the waste dump and earth dump of Rovanjska Climbers are recommended for covering the steep nish broom (Spartium junceum); shrubby germander dump slopes that descend toward the highway, in order (Teucrium fruticans); cotoneaster {Cotoneaser horito stabilise the cliffs. The planting distance should be 1 zontalis), and others. The planting distance of the x 1 (Figure 3). brushwood and semi-brush should be 1 x 1 m. Dense planting of the following brush species is proposed for the slopes of the waste/earth dumps: Spa Planting of tree and brushwood species on the earth/waste dump plateaus of "Posedarje" The dumpsite (Photo 6) located close to the highway (stationed at about 8+000) should be cleaned from the remnants of the building material (concrete blocks, rocks, etc.), in order to partly fill the surface mine. This is followed by filling and levelling the surface with earth and marly material from the dump. Then, same as in case of the Rovanjska location, a 60 cm-80 cm layer of quality soil should be applied over the area (Photo 5). Forest trees and brushwood will be planted at a same distance as in the Rovanjska location over this 15,000 m2 (1.5 ha)-large plateau. (Figure 3). Planting of brush climbers on the slopes of the waste dump and earth dump of "Posedarje" The steep slopes of the earth dump should be alleviated at a proportion of 1 : 1, so that the slopes could be ameliorated biologically. The 10,000 m2 - area will be covered by mainly dense planting of theabove-listed brushwood species: Spanish broom (Spartium junceum); shrubby germander (Teucrium fruticans); cotoneaster (Cotoneaser horizontal), and others. The planting distance should be 1 x 1 m. The dumpsite is covered by vigorous undergrowth with the highest proportion (80 %) of white rosebay (Epilobium angustifolium L.) (Photo 7). Grass is therefore not necessary on this site. CONCLUSION The following can be concluded on the basis of the research results: Before any amelioration work can begin, the area should be investigated and the terrain surveyed; Soil samples should be taken and the pedological analysis made; - Phytocenological survey; - Terrain preparation and sufficient quantity of quality soil should be applied; The area should be afforested with adequate species for each habitat; In afforestation corresponding quantity of seedling material should be applied; The afforestation should proceed according to the principles of forestry science, and considering the ecological requirements and biological properties of each species related to the habitat conditions; Planting should proceed timely and in corresponding ways; The earth/waste dump sites should be planted with the seedlings with coated roots; Timely and proper tending should be carried out regularly after the afforestation. |