ВИДОВИЙ СКЛАД ТА СТАН ЗЕЛЕНИХ НАСАДЖЕНЬ САНІТАРНО-ЗАХИСНОЇ ЗОНИ ЗАПОРІЗЬКОГО МЕТАЛУРГІЙНОГО КОМБІНАТУ «ЗАПОРІЖСТАЛЬ»
Journal Title: Питання біоіндикації та екології - Year 2015, Vol 20, Issue 2
Abstract
There are 622 plant specimens growing at the sanitary protection zone of which 568 are trees, 52 are the examples of the shrubs and 2 – of the liana (Parthenocissus quinquefolia var.murorum). These plants belong to 13 different families. Rosaceae is the family to be represented by 3 species. Aceraceae, Salicacea and Ulmaceae are the families to be represented by 2 species, others are the families are limited to a single species. The bean (Fabaceae) family turned out to be the most numerous based on the number of specimens studied and is represented by a single species Robinia pseudoacacia. There are 305 specimens of Robinia pseudoacacia at the territory of the sanitary protection zone which accounts for the 49,04 % of the overall number of trees in the plantation. The second most numerous plant species is the Chinese elm (Ulmus parvifolia) – 171 specimens (267,49 % of the total number of trees. All other families, with the exception of Acer negundo and the Daphne mezereus plants are represented in an amount of less than 20 specimens per a single species. The distribution of trees by their height criteria indicates that the most numerous plant group is the one whose height ranges from approximately 18,1 to 20,0 meters (42,96 % of the total number of specimens). The second group has the height ranges of 16,1–20,0 meters (it includes 69 specimens, which is 12,15 % of the overall count) and 20,1–22,0 meters – 67 specimens (11,79 % of the overall count). The second group includes the smallest number of trees (4,1 – 6 meters) which is 10 specimens (1,76 % of the overall tree count). The list of these specimens includes 7 specimens of Acer platanoides, 2 specimens of Acer negundo and only 1 specimen of Robinia pseudoacacia. As far as the diameter of a tree stem, the largest group turned out with the diameter of which had a range of 28,1 to 32,0 centimeters (10,74 % of the total tree count). The group of trees with a diameter of their stems that ranges from 24,1 to 28,0 centimeters (8,45 % respectively with regard to the overall tree count) is subdominant. No signs of weakening for the 6,91 % of the total number of trees in the area of the experimental plot. Signs of weakening have been observed in as much as 74,44 % of the plants, namely the desiccation of individual branches, frost-cleft, the leaves being gnawed around for up to 25 % and so on and so forth. The most numerous plants in this category are false acacia (Robinia pseudoacacia) and the Chinese elm (Ulmus parvifolia). It should be noted that at the beginning of the growing season the vital state of a horse-chestnut was assessed as being excellent. Soon after June, however, the plants' leaves have been severely damaged by a horse-chestnut leaf miner, which causes the desiccation and abscission of leaves. As for the 3rd category, which is characterized by certain signs of weakening such as small leaves, a minor increase in size, single desiccated skeletal branches in different parts of the crown, the slope of the stems is equal to 20–30 °C on the vertical axis and also fractures of tree tops, it is represented by 82 tree specimens which accounts for 13,18 % of a total specimen count. The 4th and 5th categories account for 3,86 and 1,61 % of a total specimen count respectively Signs of damage ascribed to the 5th category were found in false acacia (9 specimens) and Chinese elm (1 specimen), despite the fact that these species are tolerant to industrial emissions. В роботе приведены данные по видовому составу древесних насаджений санитарно-защитной зоны Запорожского металлургического комбинату «Запорожсталь», распределение растений по высоте, диаметру и фитосанитарному состоянию.
Authors and Affiliations
Скляренко А. В. , Бессонова В. П. Skljarenko A. V. , Bessonova V. P.
Keywords
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