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Ker se novi trendi vse bolj nagibajo k sonaravnemu urejanju vodotokov oziroma obvodnega prostora, smo se v nalogi ukvarjali z ukrepom živih mej kot ene od predstavnic le teh, za zmanjšanje erozijske nevarnosti na poplavnih območjih. Sonaravni ukrepi imajo poleg zaščitne tudi ekološko funkcijo, saj izboljšajo življenjske pogoje za vodni in obvodni živelj. Za izbrano poplavno območje reke Hudinje smo s hidravličnim modelom preverili vpliv rabe tal ter različne scenarije uporabe živih mej, ugotovitve pa podkrepili s številnimi prikazi. Vpliv izbranih ukrepov smo primerjali z obstoječim stanjem in tako upravičili njihovo izbiro. Prikazali smo primerjave globin, gladin, hitrosti ter strižnih napetosti za različne pretoke. Ugotovili smo, da raba tal pomembno vpliva na samo odpornost. Zaradi podnebnih sprememb in napovedi večanja tako intenzitete kot pogostosti visokih voda je potrebno skrbno načrtovati rabo prostora ter ukrepe na poplavnih območjih. Due to latest trends which are more oriented to the sustainable regulation of watercourses or riparian space, we focused in this master thesis on the measure of hedgerows, as one of their representatives, to reduce the erosion risk in flood areas. Sustainable measures have beside protection, also ecological function as they improve living conditions for aquatic and riparian life. For the selected flood area of Hudinja river we, used a hydraulic model to check the impact of land use and various scenarios for the use of hedges and supported the findings with numerous demonstrations. We compared the impact of the selected measures with the existing conditions and thus justify their choice. We presented comparisons of depths, levels, velocities, and shear stresses for different flows. We discovered that land use has a significant impact on resilience itself. Due to climate change and the forecast of an increase in both the intensity and frequency of high waters, it is necessary to carefully plan the use of space and measures in flood areas.

Intenziteta in pogostost visokovodnih dogodkov v Sloveniji v zadnjem času narašča, kar pomeni, da se pogosteje srečujemo tudi s posledicami poplav. Odnašanje materiala oz. erozija površja je le ena izmed njih, nastane pa kot posledica preseženih strižnih obremenitev vodnega toka. Poplavne površine imajo sicer določeno strižno odpornost, ki je določena glede na rabo tal oz. pokrovnost terena. Z modeliranjem poplavnega toka lahko določimo doseg visokih voda in preučimo njihov vpliv na površje. Glede na rezultate dvodimenzionalnega hidravličnega modela lahko določimo erozijsko ogrožena območja, z umeščanjem ekoremediacij pa je nevarnost odnašanja materiala mogoče omejiti. Za namen diplomske naloge je bila narejena analiza 100-letnega visokovodnega dogodka na Selški Sori pri naselju Praprotno. Poplavne razmere so bile modelirane v programu HEC-RAS, obdelava in prikaz rezultatov pa sta potekala s pomočjo GIS orodij. Obravnavana je bila ureditev za omejitev erozijske nevarnosti, in sicer z umestitvijo sonaravnih ukrepov v prostor. Slovenia has been experiencing greater flood intensity and frequency in the last couple of years. Therefore, the country has also been dealing with flood consequences more regularly. One of the flood effects is also soil erosion, which arises due to surpass of shear stress of the water flow. Each floodplain area has a particular shear resistance, which is defined also through the land use, respectively land cover. Information of the high-water’s reach is gained through the flood event modelling, which enables the examination of its impact on the land. The two-dimensional hydraulic model specifies the erosion-exposed areas, while the ecoremediation measures helps restricting the erosion’s negative impact. This thesis focuses on the analysis of a 100-year high-water event on the river Selška Sora by the village of Praprotno. The flood conditions were modelled in HEC-RAS 2D software, while the processing and graphical demonstration of the results were performed using GIS tools. A regulation with hedges to restrict erosion hazard was analysed.