20.500.12556/RUL-115096 Impregnabilnost in izpiranje zaščitnih sredstev iz invazivnih lesnih vrst ter njihova odpornost proti modrenju in pojavu plesni Treatment performance of invasive wood species and their resistance against blue staining fungi and moulds Invazivne drevesne vrste postajajo vedno večji izziv v naravi, saj izpodrivajo domače lesne vrste. Lastnosti lesa invazivnih drevesnih vrst so slabo poznane. Če želimo les teh vrst koristno uporabiti, jim moramo določiti ključne lastnosti, ki so pomembne za uporabo. Večina invazivnih lesnih vrst je slabo odporna proti lesnim glivam in plesnim, zato je potrebno takšen les zaščititi. V ta namen smo v magistrski nalogi raziskali impregnabilnost in vezavo bakrovih pripravkov v les izbranih invazivnih vrst. Vzporedno smo tem lesnim vrstam določili še gostoto in jih termično modificirali. V nadaljevanju smo preučili smo tudi njihovo odpornost proti modrenju in plesnenju, tako v laboratoriju kot pri zunanji izpostavitvi. Dokazali smo, da gostota in anatomska zgradba lesa vplivata na impregnacijske lastnosti. S termično modifikacijo se tudi izbranim invazivnim vrstam znižuje specifična gostota, permeabilnost pa se povečuje. Z izjemo vrst Robinia pseudoacacia in Gleditsia triacanthos, smo vse ostale preizkušane invazivne drevesne vrste označili za neodporne na pojav modrenja in plesni. Odpornost teh vrst, na pojav plesni in gliv modrivk, je primerljiva z odpornostjo beljave Pinus sylvestris -a. Invasive species are becoming an ever-bigger challenge in nature. In this rapidly changing climate, they are overrunning native species even faster. The wood properties of invasive species in general are poorly studied, but if we are to include such species in our production chains, then knowledge of these properties is fundamental. The majority of invasive species are not resistant to blue staining and moulding, and therefore their wood needs to be treated, if it is going to be used in an outside environment. In this master’s thesis we explore and test the impregnability and fixation of copper based active ingredients to selected invasive wood species. We determine their density and study how thermal modification effects the previously mentioned abilities. We conduct a variety of tests in which we try to determine how resistant invasive species actually are to blue stain fungi and moulds. In our experiments we have shown that wood mass and anatomy effects the impregnation and fixation abilities of wood. Thermal modification of the tested invasive species resulted in density decrease. Permeability after modification is increased. With the exception of Robinia pseudoacacia and Gleditsia triacanthos, we have learned that all other tested species are not at all resistant to blue staining fungi and moulds. Their resistance is similar to that of the sapwood of Pinus sylvestris. Invazivne vrste impregnabilnost biocidi izpiranje modrenje plesnenje Invasive species impregnation biocides leaching blue staining fungi moulds true false false [B. Bremšak] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2020-04-12 07:15:10 2020-04-12 07:15:19 2022-08-27 03:59:27 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*84 175761 3216777 9776.pdf 9776.pdf 1 EDA5ED00DD94753026483C2A3F3F425D 98c39d871fc9591cb08127fadd138bdfcf6c701111dec1521ecb002adef8e07e 602a9bb7-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=127666 Biotehniška fakulteta 0 0 0