20.500.12556/RUL-32510 Vpliv gozda na odtoke z dveh eksperimentalnih porečij na Pohorju magistrsko delo The influence of forest on the runoff from two experimental basins on Pohorje Gozdovi pomembno vplivajo na površinski odtok, zagotavljajo zaščitni pokrov za krajino in vračajo velik delež padavin nazaj v ozračje. V povprečju se dve tretjini padavin, ki padejo na območju gozdov, vrne v ozračje preko procesa izhlapevanja in transpiracije. V magistrskem delu obravnavamo vpliv gozda na odtoke v gozdnatih porečjih. V prvem delu naloge so predstavljeni različni dejavniki in najpogostejše ugotovitve raziskovalcev o vplivu gozda na hidrološki krog. Predstavljene so tudi posamezne komponente gozdnega hidrološkega kroga. V drugem delu smo s pomočjo meritev na dveh manjših eksperimentalnih porečjih Oplotnice na Pohorju analizirali vpliv prestrezanja padavin v gozdu na odtoke. Obe gozdnati porečji sta si po velikosti in obliki podobni, prav tako imata podobno morfologijo, vendar se razlikujeta glede na lego prispevnega območja in strukturo gozdnih vrst. Analiza je bila izvedena na podlagi izmerjenih vrednosti pretokov, meritev prepuščenih padavin v gozdu, odtoka po deblu in primerjave gozdnih sestojev na posameznih ploskvah obeh porečij. V zadnjem delu magistrskega dela pa smo naredili še hidrološka modela za obe porečji na podlagi vrednosti, ki smo jih dobili s predhodno analizo. Modela smo umerili in validirali. V nalogi smo ugotovili, da ima gozdni sestoj velik vpliv na odtoke, saj je bil na bolj zasmrečenem porečju zabeležen manjši pretok, kar je posledica dejstva, da iglavci prestrežejo večje količine padavin kot listavci. Forests are influencing surface runoff, provide a protective cover for the landscape and returning a large proportion of precipitation back to the atmosphere. On average, two-thirds of the precipitation that falls on the forested area, returne to the atmosphere through the process of evaporation and transpiration. In the thesis we discussed the impact of forest on runoff in forested basin. In the first part of the thesis we present various factors and the most common findings of researchers about the impact of forest on the hydrological cycle. We also present the individual components of forest hydrological cycle. In the second part we analyze the impact of rainfall interception on the runoff from two small forested experimental basins of Oplotnica River on Pohorje. Both basins are very similar in size and shape, but differ in the position of the catchment area and the structure of the forest. Analysis was conducted on the basis of the measured values of stream flows, throughfall, stemflow and comparison of the structure of forest stands. In the last part of the master thesis we made hydrological models for both river basins, based on the values that were obtained with a preliminary analysis. Model was calibrated and validated. We found out that forest stand has a great impact on the runoff, because smaller stream flow was recorded from the basin with a larger portion of spruce, reflecting the fact that conifer trees intercept more rainfall compared to deciduous trees. gradbeništvo magistrska dela odtok padavine porečje gozd model civil engineering master of science thesis runoff forest model basin rainfall true false false [K. Kestnar] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2015-07-10 10:16:55 2015-07-10 10:16:55 2022-12-21 08:27:53 0000-00-00 00:00:00 2014 0 Ljubljana 2014 Ljubljana XIII, 82 str., 2 pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 556.12:630*116(497.4)(043.3) 6955617 BOK001_Kestnar.pdf BOK001_Kestnar.pdf 1 388BD6E024123DE95A2CEA3F25DD3850 0e35dba26b6f262d53f0149ddbdaa8b0d060d96c0989d3bec85efabefe588604 28d74443-a1ae-11eb-a523-00155dcfd717 20.500.12556/rul/2a498919-fd26-4192-bbd9-b58cece927d8 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=86012 Fakulteta za gradbeništvo in geodezijo 0 0 0