Assessment of Trees Vitality in Urban Landscape of Steppe Zone

Svitlana O. Volodarets1*, Iryna O. Zaytseva2, Olexander Z. Gluchov3, Anna S. Maslak1
 
1 - Dnipropetrovsk State Medical Academy, Department of Biochemistry and Medical Chemistry, Soborna Sq. 4, Dnipro, 49027, 49027, UKRAINE
2 - Oles Honchar National University, Faculty of Biology and Ecology, Department of Plants Physiology and Introduction, Kazakova Str. 24, Dnipro, 49107, UKRAINE
3 - The National Academy of Sciences of Ukraine, Department of General Biology, speciality: Biological and Landscape Diversity, Volodymyrska Str. 54, Kiev, 010300, UKRAINE
*Corresponding author: svetlanavolodarets@gmail.com
 
Abstract.During planning of green planting in cities, vital status of plants which make up the groups is taken into account first. The methods of assessment of morphological and physiological parameters of the vital status are the most widely used ones. In the process of work, the vitality of woody plants was evaluated under the impact of anthropogenic pressure in the framework of the physiological state, which is determined to a great extent by the content of chlorophylls in the leaves of trees. The content of green and yellow pigments was studied in the drought conditions of vegetative period for 8 species of trees which are common in green planting of cities in the South-East of Ukraine. Stable species (Populus simonii Carriér, Populus × canadensis Moench) respond by increase in the content of chlorophylls at maximum air temperatures during the growing season. Nonsufficient-stable species show significant effect of the amount of rainfall on the changes in chlorophyll content in leaves, which is the evidence of their adaptive capacity. Deterioration of the functional state of trees in street and park planting compared to suburban territories was revealed, confirmed by reduced chlorophyll content and increase in carotenoids. For the further introduction in the urban greening of industrial cities of steppe zone, the models of influence of the meteorological factors on the content of green pigments in the leaves of Polulus simonii and Acer pseudoplatanus L. are proposed.
 
Key words: trees, urban environment, total chlorophylls, carotenoids, meteorological factors, exhaust gases.
 

Ecologia Balkanica, 2020, Volume 12, Issue 1 pp. 41-56
Article № eb.19152 [Full text - PDF]pdf

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