Recent data on the urban tolerance of the tree species most frequently used to line streets
1991
Ripka, G. | Reiderne Saly, K. (Fovarosi Novenyegeszsegugyi es Talajved. All., Budapest (Hungary))
Studies were made on the urban tolerance of 21 ornamental tree species in the busiest streets of Budapest. Tests included the extent to which trees planted to line streets were able to tolerate salting, soil compaction, heavy metal content, tarmacing, shading and air pollution with solid and gas particles. The lowest extent of foliage damage was exhibited by Ailanthus altissima. Celtis occidentalis, Fraxinus angustifolia, Koelreuteria paniculata, Robinia pseudoacacia, Sophora japonica and Populus simonii were also tolerant of urban conditions. Increasing infection with Pseudoulacapsis pentagona scales was observed on the trees, and also with Phyllactinia coreylea powdery mildew on the older ones. Aesculus hippocastanum, Tilia platyphyllos, Acer platanoides, Tilia cordata and Platanus hybrida were the most sensitive to urban conditions. The capital's walnut trees are old and in a very poor state. The trees in parks are severely damaged by drought. Cornus alba, Corylus avellana, Sambucus nigra, Philadelphus coronarius, Spiraea vanhouttei and Syringa vulgaris respond to drought with summer leaf withering and foliar loss.
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