53 KB2344 KB60 KB197320132006Kutnar, Lado16 straništevilka:79str. 37-52ISSN:0351-3114COBISSID:1757094URN:URN:NBN:SI:doc-F7F60EJ6enInštitut za gozdno in lesno gospodarstvoUniverza v Ljubljani, Biotehniška fakulteta, Oddelek za gozdarstvo & Oddelek za lesarstvoZbornik gozdarstva in lesarstvabiodiverzitetalesna zalogaQuercus petraeaQuercus roburSloveniaSlovenijavegetacijaPlant diversity of selected Quercus robur L. and Quercus petraea (Matt.) Liebl. forests in Slovenia|In Slovenia, the plant species diversity on 225 research plots dominated by pedunculate oak (Quercus robur L.) and by sessile oak (Quercus petraea (Matt.) Liebl.) has been analysed. Plots of Q. robur are located in five, andplots of Q. petraea in four semi-natural managed forest complexes. In the tree layer, 28 species were found beside the dominant two oak species, with Carpinus betulus L., Picea abies (L.) Karst., Quercus cerris L. and Fagus sylvatica L. having significant shares of growing stock. Based on the understorey vegetation (shrub and herb layer, terricolous mosses), the Ddetrended Correspondence Analysis (DdCA) made a clear distinction between plots with dominant Q. robur and those with Q. petraea. The understorey vegetation also proved to be a valuable indicator of the site conditions and of forest management in the past. Based on ordination, lowland pedunculate oak forests of relatively long standing near to natural management have been separated from the pedunculate oak forests where spruce was favoured by the forest management, and from the man-made pedunculate oak stands on primary sites of Q. petraea. DCA clearly differentiated the sessile oak forests in warmer climate of Sub-Mediterranean region, and in warmer meso-sites of Pre-Pannonian region from other sessile oak forests. The main gradients of vegetation structure and of species diversity, as well main ecological gradients in different oak forests were obtained by ordination techniqueNa 225 raziskovalnih ploskvah v dobovih (Quercus robur L.) in gradnovih (Quercus petraea (Matt.) Liebl.) gozdovih smo analizirali rastlinsko vrstno pestrost. Dobove ploskve so postavljene v petih, gradnove pa v štirih gospodarjenih gozdnih kompleksih. V drevesni plasti preučevanih gozdnih ekosistemov se poleg dominantnih vrst hrasta pojavlja še 28 vrst, med katerimi so v lesni zalogi bolj zastopani beli gaber (Carpinus betulus L.), smreka (Picea abies (L.) Karst.), cer (Quercus cerris L.) in bukev (Fagus sylvatica L.). Ordinacija DCA (Detrended Correspondence Analysis) je samo na osnovi vrst v pritalnih plasteh vegetacije (grmovna in zeliščna plast, na tleh rastoči mahovi) jasno ločila ploskve s prevladujočim dobom od ploskev z gradnom. Vrste pritalnih plasti so dober indikator rastiščnih razmer kot tudi gospodarjenja z gozdovi v preteklosti. Nna tej osnovi je ordinacija ločila nižinske dobove gozdove z razmeroma sonaravnim gospodarjenjem v daljšem obdobju od dobovih gozdov, v katerih so v preteklosti pospeševali smreko, in od umetno zasnovanega dobovega gozda na primarnih rastiščih gradna. Analiza jeločila tudi gradnov gozd, ki uspeva v toplejšem podnebju v submediteranskem območju, in gradnov gozd na toplejših rastiščih v predpanonskem območju od preostalih dveh gradnovih gozdov. Ordinacija raziskovalnih ploskev dobro odseva razlike v floristični sestavi hrastovih gozdov, nakazuje gradiente pestrosti pritalnih plasti vegetacije in glavne ekološke gradienteTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Biotehniška fakulteta