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Vpliv soljenja cest na smreko (Picea abies (L.) Karsten) v obcestnem prostoru na Pokljuki : magistrsko delo
ID Menegalija, Tanja (Author), ID Zelnik, Igor (Mentor) More about this mentor... This link opens in a new window

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Abstract
Soljenje cest vpliva na kemijske lastnosti tal in posledično na fiziološke parametre in rast rastlin v obcestnem prostoru. Vpliv soljenja smo preučevali na območju Pokljuke (Triglavski narodni park), kjer smo izbrali vzorčna mesta, ki so ob intenzivno soljenem cestnem odseku in referenčno mesto brez tega vpliva. Meritve rasti rastlin in fizioloških parametrov smo opravili na smreki (Picea abies). V letih 2009 in 2010 smo izmerili naslednje parametre: fotokemično učinkovitost FS II, vodni potencial, transpiracijo, vsebnost klorofila a in b ter kationov (Na+, K+, Ca2+ in Mg2+) v iglicah. Na teh vzorčnih mestih smo odvzeli vzorce tal in snega. Analizirali smo kemijske parametre in sicer, električno prevodnost, vsebnost bazičnih kationov, oziroma kationsko izmenjalno kapaciteto (Ca2+, Mg2+, K+, Na+). Analize so pokazale bistveno večje vsebnosti Na+ v snegu ter v tleh v spomladanskem obdobju. Statistično značilne razlike med soljenimi in nesoljenimi rastišči so se pokazale v ksilemskem vodnem potencialu, kot tudi v biomasi poganjkov. Za vzorčno mesto V1s, kjer so tla plitvejša, smo pri večjem številu fizioloških parametrov izračunali statistično značilne razlike z referenčnim rastiščem (V6ns), saj so razmere tam za rast smreke manj ugodne, vpliv soljenja pa se zaradi manjše kapacitete tal za vodo prej odrazi. V letu 2013, po zimi, ko je bilo porabljeno največ soli, je bila prirast rastlin statistično značilno manjša na obeh soljenih lokacijah, v primerjavi z nesoljeno.

Language:Slovenian
Keywords:soljenje cest, smreka, poškodbe rastlin, natrij, Pokljuka
Work type:Master's thesis
Typology:2.09 - Master's Thesis
Organization:BF - Biotechnical Faculty
Place of publishing:Ljubljana
Publisher:[T. Menegalija]
Year:2015
Number of pages:XI, 60 f., [3] f. pril.
PID:20.500.12556/RUL-115326 This link opens in a new window
UDC:630*24:630*1(497.4)(043.2)=163.6
COBISS.SI-ID:4071078 This link opens in a new window
Publication date in RUL:22.04.2020
Views:869
Downloads:144
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Secondary language

Language:English
Title:Effects of de-icing salt on norway spruce (Picea abies (L.) Karsten) in the road-side area on Pokljuka
Abstract:
Application of de-icing salt affects the chemical properties of the soil, and consequently the growth and physiology of the plants in the road-side areas. Effects of de-icing salt applied for road maintenance was studied in the area of Pokljuka (Triglav National Park), where a reference site without the impact and two sites exposed to intensive use of de-icing salt were selected. Plant growth rate and selected physiological parameters were measured on Norway spruce (Picea abies). The following parameters were measured in the years 2009 and 2010: photochemical efficiency of photosystem II (PS II), water potential, transpiration, the content of chlorophyll a and b and the cations (Na+, K+, Ca2+ and Mg2+) in the needles. In these sites, soil and snow samples were taken for further analyses, where the chemical parameters, namely, the electrical conductivity, and the cation exchange capacity (Ca2+, Mg2+, K+, Na+) were measured. Analyses showed significantly higher levels of Na+ in the snow and in the soil in the spring samples. Statistically significant differences between salted and unsalted sites were calculated in case of plant water potential, as well as in the biomass of shoots. In the site V1s, where the soil is shallower, most of physiological parameters showed statistically significant differences in comparison with the reference site (V6ns). Most probably, due to less favourable growth conditions and lower water capacity of those soils, the effects of de-icing salt are more pronounced. In the year 2013, after the winter, when the highest amount of salt was applied, the growth of plants was significantly lower at both salted sites, in comparison with the unsalted, reference site.

Keywords:de-icing salt, Norway spruce, plant damage, sodium, Pokljuka

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