1356 KB67 KB193820262024Babij, ValerijaKermavnar, JanezKutnar, LadoMarinšek, Aleksanderštevilka:1letnik:82str. 3-23ISSN:0017-2723COBISSID_HOST:196140035URN:URN:NBN:SI:doc-U9FEE27ZenslZveza gozdarskih društev SlovenijeGozdarski vestnikdrevesne vrsteforest vegetation, soil damage, forest fire, tree species, species diversity, invasive plant species, Karst, Sloveniagozdna vegetacijagozdni požarinvazivne rastlinske vrsteKraspestrost vrstpoškodbe talSlovenijaGozdna tla in vegetacija eno leto po požaru na Goriškem Krasu| Forest soil and vegetation one year after the Goriški Kras fire|In 2023 – one year after the large fire at Goriški Kras raging in July 2022 – we surveyed the herb, shrub, and tree layers of vegetation and analyzed the soil to the depth of 10 cm on the selected forest sampling plots. The plots were selected on the locations of the permanent sampling plots (of the Slovenia Forest Service), with diverse damage grades due to the fire. We recorded a total of 260 species of ferns and seed plants on the selected plots. In the tree layer, we recorded 13 species (11 autochthonous and 2 non-native ones), in the shrub layer 30, in the herb layer 255 species. The most frequent in the tree layer were manna ash, hop hornbeam, and black pine; in the shrub layer manna ash, common smoketree, and brambles. In the herb layer, among other species we also recorded 19 tree species representing an important base in the natural regeneration of the burnt forest on Kras; the most frequent were hop hornbeam and mahaleb cherry. The gradient of damage after the fire is clearly shown in the majority of vegetation and soil variables. We detected statistically significant differences between the groups of plots with diverse damage levels for six parameters: pH values and sulfur content in the organic part of the soil, covering of the tree layer, covering of mosses, the number of species in the lower tree layer, the number of herb layer species. On the plots, we identified 9 invasive or potentially invasive non-native plant species (and another three species on the burnt area outside of the plots); the most frequent tree species were black locust and tree of heaven. The study significantly contributes to the understanding of vegetation development, regeneration of the key tree species, and forest soil damage in the initial phase after a large fireV letu 2023 - eno leto po obsežnem požaru na Goriškem Krasu, ki je divjal julija leta 2022 - smo na izbranih gozdnih vzorčnih ploskvah popisali zeliščno, grmovno in drevesno vegetacijo in analizirali tla do globine 10 cm. Ploskve smo izbrali na lokacijah stalnih vzorčnih ploskev ZGS z različno stopnjo poškodovan osti zaradi požara. Na izbranih ploskvah smo skupno popisali 260 vrst praprotnic in semenk. V drevesni plasti smo popisali trinajst vrst (enajst domorodnih in dve tujerodni), v grmovni plasti trideset, v zeliščni pa 255. V drevesni plasti so bili najpogostejši mali jesen, črni gaber in črni bor, v grmovni mali jesen, navadni ruj in robide. V zeliščni plasti smo med drugimi popisali tudi devetnajst drevesnih vrst, ki so pomembna zasnova pri naravni obnovi požganega gozda na Krasu; najpogostejša sta bila črni gaber in rešeljika. Gradient poškodovanosti po požaru se jasno kaže v večini vegetacijskih in talnih spremenljivk. Statistično značilne razlike med skupinami ploskev z različno stopnjo poškodovanosti smo ugotovili za šest parametrov: pH-vrednosti in vsebnosti žvepla v organskem delu tal, zastiranje drevesne plasti, zastiranje mahov, število vrst v spodnji drevesni plasti, število vrst zeliščne plasti. Na ploskvah smo prepoznali devet (ter še tri vrste na požarišču zunaj ploskev) invazivnih ali potencialno invazivnih tujerodnih rastlinskih vrst; med drevesnimi sta bila najpogostejša robinija in visoki pajesen. Študija pomembno prispeva k razumevanju razvoja vegetacije, pomlajevanja ključnih drevesnih vrst in poškodb gozdnih tal v inicialni fazi po obsežnem požaruTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaZveza gozdarskih društev Slovenije