20.500.12556/RUL-176397 Analiza kakovosti vode na izbranih vodotokih v Mestni občini Ljubljana Water Quality Analysis of Selected Watercourses in the Municipality of Ljubljana V magistrski nalogi smo preučevali kakovost vode na izbranih vodotokih v Mestni občini Ljubljana, ki ne spadajo pod okrilje rednega monitoringa kakovosti voda. Izbrali smo šestnajst merilnih mest na petnajstih vodotokih, na katerih smo v celotnem letu 2023, to je od januarja do decembra, enkrat mesečno izvajali analizo kakovosti vode. Med izbranimi vodotoki sta tudi Ljubljanica in Sava, na katerih poteka državni monitoring. Služila sta nam kot kontrolna vodotoka, saj se vsi vodotoki, vključeni v analizo, izlivajo vanju. Kakovost vode smo merili na podlagi terenskih in laboratorijskih meritev izbranih fizikalno-kemijskih parametrov (temperatura, pH, električna prevodnost, trdota vode, količina raztopljenega kisika in nasičenost s kisikom ter vsebnost amonija, nitrita, fosfata, nitrata, sulfata in klorida). V skladu z osnovno delovno hipotezo se je izkazalo, da so vodotoki z večjim deležem urbanih in kmetijskih površin v porečju ter s prisotnimi potencialnimi onesnaževalci praviloma tudi bolj onesnaženi. Pri njih so pogosto presežene priporočene in mejne vrednosti analiziranih parametrov, kar vpliva tudi na slabšo kakovost vode. Najbolj onesnaženi so vodotoki, ki pritekajo z Barja: vodotok na Rakovi jelši, Curnovec in Prošca, najmanj pa Rastučnik in Gostinca, ki sta tudi v najmanjši meri podvržena antropogenim pritiskom v porečjih. In this master's thesis, we investigated the water quality of selected watercourses in the Municipality of Ljubljana that are not included in the regular national water quality monitoring program. Within the municipality, we selected sixteen measurement sites across fifteen watercourses, where we conducted monthly water quality analyses throughout the year 2023, from January to December. Among the selected watercourses were the Ljubljanica and the Sava, which are part of the national monitoring network and served as reference watercourses, as all other studied streams discharge into them. Water quality was assessed based on field and laboratory measurements of selected physico-chemical parameters, including temperature, pH, electrical conductivity, water hardness, dissolved oxygen concentration and oxygen saturation, as well as concentrations of ammonium, nitrite, phosphate, nitrate, sulfate, and chloride. In line with the primary working hypothesis, it was found that watercourses with a higher proportion of urban and agricultural land use in their catchments and the presence of potential pollution sources tend to be more contaminated. These streams frequently exceeded recommended and threshold values for the analyzed parameters, resulting in poorer water quality. The most polluted watercourses were those originating from the Ljubljana Marshes, specifically the stream at Rakova Jelša, Curnovec, and Prošca, while the least polluted were Rastučnik and Gostinca, which are subject to minimal anthropogenic pressures in their catchments. fizikalno-kemijski parametri kakovosti vode Mestna občina Ljubljana onesnaženost vodotokov kakovost voda pritiski na vode physico-chemical water quality parameters Municipality of Ljubljana watercourse pollution water quality pressures on water bodies true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-11-29 07:16:15 2025-11-29 07:16:29 2025-12-21 03:54:23 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 604541 62317.pdf 62317.pdf 1 9CF66448F7165399584CFC45BC6FD89C 481be43e57d8286a8693a9ef34fe8603daaea1e710cd592c191f36e71e4e1436 9313b0b9-ccea-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=222723 Filozofska fakulteta 0 0 0