The health status of urban trees in Sarajevo with special retrospect on damages caused by snow
DOI:
https://doi.org/10.54652/rsf.2011.v41.i1.143Keywords:
health status, urban trees, damages caused by snow, linking up of biotic and abiotic factorsAbstract
UDK 630*4:712(497.6 Sarajevo)
The aim of this research was to analyze the health status of urban trees with special reference to mechanical damages caused by harmful effect of snow. The heavy snow in October 2009 caused considerable damages of trees in Sarajevo. Research was carried out in three important Sarajevo’s avenues: Vilsonovo šetalište, Bulevar Meše Selimovića and Alipašina ulica. According to the research methodology, every tree was characterized by tree species, breast diameter and type of damage(s). The tree was classified as “damaged” if any of following symptoms was present: stem fracture, split of the crown or fracture of branch. Total 861 trees were analysed. The most represented tree species were Lime-tree (Tilia sp., 388 trees), Plane tree (Platanus sp., 141 trees), Horse-chestnut (Aesculus hipocastanum, 119 trees) and Maple (Acer sp., 55 trees).
According to the results of the research, considerable damages of trees caused by snow was observed. The most damaged species has been Platanus (90,1%). The percentage of damaged tree of other species are Tilia (43,6%), Acer (30,9%) and Aesculus (15,1%). The value of Mc Norman Chi-square test indicates a statically important difference of tree species resistance to damages caused by snow (p-Value = 2,62E-42). Also the differences in distribution of damaged trees per species and diameter class were noted. Lime-trees of the middle diameters have been more susceptible to damage than thinner and thicker ones (p-Value = 0,001331). Damaged trees of other species are mostly in the thinner class.
It is predicted that the damages of trees will play suitable inputs for a number of wood decaying microorganisms and insects in future. Better measures of damaged and other trees in Sarajevo are needed. Proper selection of tree species, improvement of habitat area of each plant, quality care of trees and a continuous and systematic health monitoring could prevent future catastrophic damages of urban greenery.
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