Road salting is one of the major negative impacts on the environment. Application of chemical salt based de-icing materials damages mostly the trees growing near the roads. Sodium and chlorine which are washed into the environment are absorbed by the surrounding vegetation and their increased concentration
has a negative impact on their health. This thesis work assesses the influence
of contamination potential on the content of sodium and chlorine in the needles
of Norway spruce (Picea abies). This tree was used for the study because
of its abundance and increased sensitivity to salinity. Study area was chosen
in the northern part of the Czech Republic in the Liberec Region in between Jablonec nad Nisou, Železný Brod and Tanvald. To indicate the potential damage caused
by road salting, the samples of 1-year-old and 2-year-old needles of Norway spruce were collected and examined for the concentration of sodium and chlorine. Also,
the site contamination potential was assessed and the health conditions of individual conifers were evaluated. The measured concentrations of elements were evaluated
based on four factors: the potential contamination sites, the health of the tree,
the distance from the road and the age of needles. Based on the results
of the evaluation, a measurement scale was designed with framework concentration values which can be used for practical assessment of the level of contamination.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:259872 |
| Date | January 2016 |
| Creators | Zítková, Jana |
| Contributors | Anděl, Petr, Vojar, Jiří |
| Publisher | Česká zemědělská univerzita v Praze |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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