DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/1979 str. 37 <-- 37 --> PDF |
3. Glendon, W. S. i Kenneth, P., 1972. Yellow Polar, Lobloly Pine and Virginia Pine Compard in Cumberland Platean Plantatitons, USA Forest Servis, SO-141, Separat. 4. gatar , J., 1968: Melioracija i rekonstrukcija izdanačkih šuma (stav: Problem izbora vrsta), Radovi broj 9, Poslovno udruženje, Zagreb. 5. William , R. M., 1965: Forest Species Compard in Ozark Plantations, USA Forest Servis SO-28, Separat. 6. Williard , H. C, 1971: Site Index, Comparisons for Tree Species in Northern Minnesota, USA Forest Service, NC-65, Separat. 7. Wraber , M., 1961: 0 biološki i sociološki problematiki usvajanja gozdnih egzot, Šumarski list 1—2. 8. Vodi č A pioneer Search for better Kinds of Trees for the North-West, USA Forest Servis, 9. Grup a autora , 1975: Proučavanje metoda podizanja i uzgoja intenzivnih nasada četinjača, Završni elaborat o izvršenom radu 1972.—1975., Dokumentacija Instituta. Summary FIRST RESULTS OF COMPARATIVE CULTIVATION TEST WITH SOME INDIGENOUS AND CONIFEROUS THREE SPECIES In order to make proper choice of coniferous tree species for forest planting, the Forestry Institute at Jastrebarsko started with adequated investigations in 1969. three indigenous and three foreign species were investigated and/or icluded in experimental plantings: Scots pine (Pinus silvestris L.), European black pine (Pinus nigra Arnold), and Norway spruce (Picea abies Karsten) of the indigenous species, and European larch (Larix decidua Mill.), Eastern white pine (Pinus strobus L.) and Douglas fir (Pseudotosuga taxifolia var viridis Asch. et Gr.) of the foreign ones. Two experimental plots (Durgutovica and Surduk) are on the former forest area, one (Slani potok) on the former agricultural area and one (Lokve) on the grassland covered with bracken. According to the first results the increments on forest grounds are higher that those on agricultural — grassland areas. The data refer to the period 1969—1973. Hight increments are shown in table 4, total heights and diameters brest high in 1973 in 1973 in table 5 and graphs 2. Species are indicated in abbreviations, i. e. »OB« meaning Pinus silvestris L., »CB« — P. nigra Arnold, »OS« — Picea abies Karsten, »EA« — Larix decidua Mill., »AB« — Pinus strobus L. and »ZD« — Pseudotsuga taxifolia var. viridis Asch, et Gr. |