Autor(i)/Author(s): Tatiana Swoczyna, Jacek Borowski
Názov/Title: Impact of Airborne Salinity Deposition on Shoot Growth and Leaf Phenology of London Plane (Platanus × hispanica Mill. Ex Münchh. ‘Acerifolia’)
Zdrojový dokument/Source: Plants in Urban Areas and Landscape :: PUAL
Typ dokumentu/Document Type: Scientific paper
ISSN: 2585-9811
ISBN: 978-80-552-2164-9
DOI: https://doi.org/10.15414/PUAL/2020.59-65
Vydavateľ/Publisher: Slovak University of Agriculture in Nitra
Rok, strany/PY, pages: 2020, 59-65
Publikované online/Published on-line: 2020-04-17
Jazyk/Language: eng
Abstract: Street environmental conditions are characterised by heavy pollution which is detrimental for street trees. Especially, application of de-icing
salt in streets in Central and Northern Europe causes serious damages of urban trees. Along with salt deposition in soils some amount of de-icing salt is also sprayed in the
air and may be deposited on street trees’ shoots. The aim of this study was to determine how the close vicinity to roads affects shoot increment and leaf phenology of
London plane. Annual shoot elongation and the estimated sum of shoot length (using photographic method) of each 5 trees growing in 4 different streets was measured and leaf
phenology was observed in 2008 and 2009. Additionally, the soil salinity and the shoot surface salinity was measured in spring. The results indicate that soil and shoot surface salinity depends
on traffic intensity and distance of the road. Trees growing in the close vicinity to the road of low traffic and trees growing 15 m away from the road showed similar pattern in shoot salt deposition.
Salt deposition on shoots in trees growing in the close proximity to a road of heavy traffic was three-fold higher. Those trees revealed very late bud swelling and late leaf shedding. Leaf
yellowing did not occur, leaves turned brown and dry and were shed in late November. Moreover, trees growing in the close vicinity to the road of heavy traffic were developing late
long shoots, but their estimated sum of shoot length did not increase much. This response is expected to be the consequence of buds’ injuries caused by salt spray produced in roads of high vehicle speed.
Keywords: de-icing salt, electrical conductivity, salt spray, street trees, urban trees
Práva/Rights: Creative Commons Attribution 4.0 Licence
Toto dielo je publikované pod/This work is licensed under a Creative Commons Attribution 4.0 International License.
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