DIGITALNA ARHIVA ŠUMARSKOG LISTA
prilagođeno pretraživanje po punom tekstu
| ŠUMARSKI LIST 3-4/2010 str. 64 <-- 64 --> PDF |
D. Posarić: NAJVAŽNIJI RAZLOZI GUBITKA HRASTALUŽNJAKA(Quercus robur L.) IZ SASTOJINA... Šumarski list br. 3–4, CXXXIV (2010), 151-158 sources, Northeast Science & Technology, TR-Matić,S., M.Oršanić, I.Anić,1996: Istraživanja 37, 1–30. obnove i njege šuma na području pokupskog ba- Forest Stewardship Council,A. C.: Principi i kriteriji za zena, Radovi, Šumarski institut Jastrebarsko, Ninadzor šuma, dokument 1.2 (Revidirano u siječ zinske šume Pokupskog bazena, vol. 31, br. 1–2: nju 1999.). 111–124, Jastrebarsko. Greulich,F.R., D. P.Hanley, J.F.McNeel, D. Mayer,B., 1996: Hidropedološki odnosi na području Baumgartner, 2004: A Primer for Timber ni zinskih šuma pokupskog bazena, Radovi, Harvesting. Cooperative Extension – College for Šu marski institut Jastrebarsko, Nizinske šume Agriculture and Home Economics,Washington Po kup skog bazena, vol. 31, br. 1–2: 37–89, Ja- State University Pullman, 1–33,Washington. stre barsko. Košir,B., 2008: Damage to young forest due to harve- Poršinsky,T.,2005: Djelotvornost i ekološka pogodsting in shelterwood systems, Croat. j. for. eng. nost forvardera Timberjack 1710 pri izvoženju 29,Vol. 2, 141–153, Zagreb. oblovine iz nizinskih šuma Hrvatske. Di sertacija, Šumarski fakultet Sveučilišta u Zagrebu, 1–170. Krejči, V., T. Dubravac, 2004: Problemi obnove šuma hrasta lužnjaka (Quercus roburL.) vlažnog Posarić,D., 2007:Vodič za revirničke poslove s pritipa tijekom oplodnih sječa, Šumarski list 3–4: mjerima iz spačvanskih nizinskih šuma, Hrvat119– 126, Zagreb. ske šume d.o.o., 1–232, Zagreb. Posarić,D., 2008: Obnova spačvanskih šuma hrasta stojina hrasta lužnjaka, Hrast lužnjak u Hrvat Matić,S., 1996: Uzgojni radovi na obnovi i njezi sa lužnjaka (Quercus roburL.) oplodnim sječama – skoj, HAZU centar za znanstveni radVinkovci i mogućnosti poboljšanja postojećeg načina rada, Hrvatske šume, p.o. Zagreb: 167–212,Vinkovci Šumarski list 1–2: 53–63, Zagreb. –Zagreb. Rubić,G., 1997: Obnova sastojina žirom hrasta lužMatić, S., 2003: Njega i obnova šuma hrasta lužnjaka, njaka na području Uprave šuma Vinkovci, ŠuRetrospektiva i perspektiva gospodarenja šuma marski list 9–10: 507–514, Zagreb. ma hrasta lužnjaka u Hrvatskoj, HAZU centar za znanstveni radVinkovci: 143–166, Zagreb – Vinkovci. SUMMARY: During the process of natural regeneration of pedunculate oak (Quercus roburL.) forests, and later during a growth of young plants, up to the age of approximately 20 years of old, many oak plants die out. This paper will not deal with those oak trees which, in the struggle for light with other oak plants die during the growth of the stand. This is a normal, natural process. Paper will deal with the reasons for excessive loss of oak plants and disruption of the normal tree species ratio in lowland oak forests and ways to prevent these losses. Many unfavorable factors are causing a decline of oak plants. Their sequencing and/or synergic action is a reason that many oak plants die out. If the natural regeneration of the stand is well managed, and if the adverse impacts are controlled all the time to the first thinnings, it is very likely that there will be a high quality oak stand. However, if the foresters come too late with the protection of the stand at any stage of its growth, or even fails to do it, oak plants suffer. It is therefore very important to protect and tending young stand well up to the age of the first thinnings. The adverse impacts that endanger oak plants are numerous and diverse. The most harmful are retaining surface water, small forest rodents (especially vole species – Figure 4) and competitive weed vegetation (Figures 3 and 5). Some influences are under the permanent supervi sion and there is a quality protection against them (e.g. Oak mildew – Microsphaera alphitoidesGriff. et Maubl.) and because of that they are not causing much damage, although they are potentially very dangerous. Some others are underestimated and therefore their harmful impact occurs, especially after the removal of the old stand by final cut, when monitoring and control of the young stand are not so intensive as they were during the regeneration process. A need for permanent professional supervision and control of the stands state is the most important conclusion of this work, because they are a prerequisite for timely and proper response to the observed adverse impacts. Keywords: the die out of oak plants, seedling stage, sapling stage, young forest, prop stage, retaining surface water, small rodents, vegetation of weeds, monitoring the situation of stands. |