The influence of microclimatic urban conditions on the growth of Tilia cordata Mill. (Ufa city example)

Abstract

The biological state of plantings with contrasting microclimatic growing conditions within the city limits is influenced by the orientation of streets to the cardinal directions and the presence of high-rise buildings. The trunk diameters (d0,1 and d1,3) and the height of Tilia cordata Mill were measured (n = 1 476 trees on 12 trial areas) with different age range (within V-X classes), freely growing on twelve linear trial areas allocated within two districts of the Ufa city of the Republic of Bashkortostan. The comparison of the average values of biometric parameters of trees growing in areas with different microclimates was carried out using the Student's test (α=0.05). In the process of conducting research on sites with contrasting microclimatic conditions, it was revealed that the growth, development and productivity of green spaces in urban conditions is influenced by their location, microclimatic conditions and air temperature. The orientation of the streets to the cardinal directions and the presence of high-rise buildings - sunny or shady - are very important for the growth of the tree. On the shady side during the growing period there is more moisture and the air temperature is lower. Of great importance for the difference in the diameters of the trees of the objects under consideration is their age. In addition, the immediate proximity of trees to the carriageway of the main street of the city also has a serious impact on their condition. The data of this study allow them to be used in the organization of landscape care for urban plantings, including linden trees.