2691 KB42 KB193820261999Kecman, Milošletnik:57številka:9str. 355-367ISSN:0017-2723COBISSID:565670URN:URN:NBN:SI:doc-97WZNFVYslZveza gozdarskih društev SlovenijeGozdarski vestnikčrna jelšagojitevgozdoviPrekmurjeredčenjeGojitvene lastnosti črne jelše v Polanskem logu| Silvicultural characteristics of common alder in Polanski log|Setting of five research plots sized 0.2 ha for checking developmental trends of the flood-plain forest, coincides with a modern flood-plain forest management in 1967. Each plot has been divided into three subplots. The first subplot was treated by moderate thinnings, the second one was without treatment and the third one was treated by heavy thinnings. Each tree was measured by breast-height diameter. Effects of thinnings were checked according to tree quantity, mean diameter, growing stock and mean tree volume.Analyses show a high adequacy of moderate thinnings. A proposal of thinning intensity in stands of common alder is presented as a concluding thoughtZ začetki sodobnega gospodarjenja nižinskih poplavnih gozdov sovpada tudi postavitev petih raziskovalnih ploskev velikosti 0,2 ha v letu 1967 za spremljanje razvojnih trendov nižinskih poplavnih gozdov. Ploskve so bile razdeljene na tri polja. Na prvem polju so se izvajala zmerna redčenja, na drugem se redčenj ni izvajalo, na tretjem pa so se izvajala močna redčenja. Vsakemu drevesu je bil izmerjen premer v prsni višini. Učinke redčenj smo spremljali glede na število dreves, srednji premer, lesno zalogo in srednji volumen drevesa. Analize nakazujejo na primernost zmernih redčenj. Podan je predlog o intenzivnosti redčenj v jelševih sestojihTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaZveza gozdarskih društev Slovenije