Å UMARSKI LIST 1-2/1973

Na kraju ovoga rada sa posebnim zadovoljstvom ističemo da je operativa ova istraživanja svesrdno prihvatila i pomogla. Kolege iz pomenutih radnih organizacija su i sami učestvovali u oformljenju ovih ogleda. Ne čekajućikonačne, kompleksne rezultate ovih istraživanja oni su sami već za svoja područjaodabrali neke najekonomičnije varijante, koje danas primenjuju usvojim operativnim zadacima.Ovim istraživanjima, tj. primenom nekih od iznetih varijanti racionalizacijeseča, u operativi su praktično, započeti temelji racionalizacije seča kaomera negovanja šuma u SR Srbiji, za kojima se upravo danas oseća posebnapotreba.LITERATURA1. BunuševacT.: Tehnika gajenja šuma. Beograd, 1950. g.2. Venet I.: Pratique de la pre-designation des arbres de place — Ecole Nationaledu Genie Ruval des Eaux et des Forets. Nancy 1970. Prevod šumarstvo 3—41970. g. Beograd.3. Dekanici.: Metod intenzivnog proređivanja sastojina visokog uzrasta. Jug.-polj.-šum. centar br- 46. Beograd, 1964. g.1. Jurca J.: Racionalizace vychovy mladych lesnich porasty. Podnikove reditestvistatnich lesu v Brne. 1970. Brno.5. Ko es tier I. N.: Die Waldpflege. Frankfurt a/14. 1951.6. Leibundgut H.: Die Waldpflege. Bern 1966.7. Musil A-: Současna problematika porostni vychovy- Podnikove reditelstvi statnichlesu v Brne. 1970. Brno.8. Petrović D., Marković Lj.: Nega šuma u Srbiji. Polj-šum. Komora NRS.Knjiga 4., Beograd 1960 g.9. Pintarić K.: Nege šuma. Sarajevo 1969 g.10. S h a e d e 1 i n W.: Die aus lese durchforstung als Erzichungsbetrie höchster Wertleistung-Bern 1942.11. Wagenknecht E.: Raüonalisirung der Jungebestendespflege als Mitel zurLeistungssteierung der Wälder. How to increase Forest Productyvity. Praha,1968.12. Heger A.: Lehrbuch der forstlichen Voratspflege, Berlin 1955.SummaryPROBLEM OF RATIONALIZING IMPROVEMENT FELLINGS IN THE STANDTaking into consideration that through rationalization of fellings — as specialtending operations in young stands — by applying a special phytotechnique, organizationand technology the highest economy in forest production can be achieved,the Institute for Silviculture of the Forestry Faculty, Beograd, initiated in 1971—1972investigations on the rationalization of fellings as a measure of stand improvement.To this purpose experiments were laid out in the region of the Forest Enterprise»Boranja«, Valjevo, in the Forest District Magleš on Povlen Mountain, in artificiallyestablished 30 year-old cultures of Black and Scots Pines (Pinus nigra and P. silvestris),and in 33 year-old pure culture of Norway Spruce (Picea excelsa); also in theForest District of Kosjerić (the Forest Enterprise Titovo Uzice) on Bukovi Moutain,in a 20 year-old culture of Black Pine (Pinus nigra). The experiments on Magleš arelaid out on the habitat of montane Beech (Fagetum montanum serbicum), while theexperiments in the Forest District Kosjerić are on the habitat of Black and ScotsPines (Pinetum nigrae-silvestris).20