Стан примагістральних лісосмуг біля смт Кирилівка Запорізької області
Journal Title: Питання біоіндикації та екології - Year 2016, Vol 21, Issue 1
Abstract
We have studied the roadside planting along the highway Т0820 that leads to the urban-type settlement Kirillovka (south of Zaporizhzhya region). The total length of shelterbelts was about 50 km. The species composition of woody plants is 12 species. The Robinia pseudoacacia L., Gleditsia triacanthos L., Populus simonii Carriеreare form the greatest part in shelterbelts. The distribution of trees by the category of vital status were submitted: no signs of damage – 25,2 %, weakened – 37,5 %, greatly weakened – 32,1 % and dying – 4,2 %. The dead trees were about 1 %. The most resistant species are Gleditsia triacanthos, Populus bolleana, Elaeagnus angustifolia, Pinus sylvestris. The least resistant species are Populus simonii, Salix alba. Overall condition of planting can be defined as weakened. Part of the planting is damaged by fire. The phytosanitary condition of the majority of trees in roadside shelterbelts is unsatisfactory. The most common damages are rarefied tree crown, mechanical damage, exfoliation of bark, drying annual shoots and skeletal branches, dieback. The greatest numbers of species in a roadside belt are the groups of xerophytes and xeromesophytes (9 of 12). The most resistant species are groups of introducents xerophytes plants. 84% percent of species are salt tolerant species, 2/3 of plants are gas-resistant. Forest belts are predominantly three-row and double-row structures. Over a third of the surveyed route are generally unprotected forest belts. Occasionally along the road grow single trees and shrubs, which cannot serve as shelterbelts. Selection of species for forest plantations is carried out in accordance with environmental requirements, but structure of linear belts is broken and they cannot fully fulfill their functions. Изучен таксономический состав древесной растительности придорожной лесополосы вдоль трассы Т0820, которая ведет к пгт Кирилловка (юг Запорожской области). Установлено, что в насаждении преобладают три вида: гледичия обыкновенная, робиния лжеакация и тополь Симона. Большинство видов высажено в соответствии с их экологическими предпочтениями к влажности почвы, степени газо- и солеустойчивости. Однако структура лесополос существенно нарушена пожарами, вырубками и естественным выпадением деревьев вследствие солидного возраста насаждений и высокой интенсивности эксплуатации трассы.
Authors and Affiliations
О. А. Пономарьова E. A. Ponomareva
Keywords
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