Abstract
The influence of recreation of varying intensity on the health condition and structure of forest shelter belts formed by common oak (Quercus robur L.) and green ash (Fraxinus lanceolata Borkh.) is estimated. The long-term impact of recreational pressure on shelterbelts that were identical at the time of creation was evaluated. It was found that the long recreational influence of different intensity leads to a significant decrease in the stocking of the tree stand (by 27.5%), changes in the stand structure, deterioration of health condition (in the S-2 section, the health condition index was І.7 and in the S-1 section, ІІ.3) and a decrease in the average diameter of the trees (by 20.5 %). In addition, such an effect led to a significant reduction in the density, both for advance growth (by 73.5 %) and undergrowth (71.3 %), which ultimately affected the change in the openness of the vertical profile of the shelterbelt. Frequently, uncontrolled burning of refuse and dry grass by recreators provoked the emergence of surface fires and additional weakening of the trees in the stand (the health state of damaged trees fluctuated within the 3-4 category of health condition) as well as partial destruction of the advance growth and undergrowth. Cenomorphic analysis of forest phytocoenoses by Belgard revealed the predominance of ruderants. Sylvants (typical species for the forest) and Pratants (steppe species) are represented by three species and have occurred seldomly.
Highlights
Оцінено вплив рекреаційного навантаження різної інтенсивності на стан та структуру полезахисних лісових смуг, сформованих дубом звичайним (Quercus robur L.) та ясенем зеленим (Fraxinus lanceolata Borkh.)
M. Vysotsky The influence of recreation of varying intensity on the health condition and structure of forest shelter belts formed by common oak
Such an effect led to a significant reduction in the density
Summary
На секції С-1 середній показник КК становив ІІ,, у центральному ряду – ІІІ,. На секції С-2 середній КК становив ІІ,. У центральних рядах цей показник становив від ІІІ, до ІV,. У цій частині смуги дерева першого та другого КК були відсутні. Частка дерев третього КК в рядах No 1, 2, 3, 5 сягала від 67 до 78 %, у четвертому ряду такі дерева були відсутні. Частка дерев IV та V КК становила від 22 до 100 %. Ріст і розвиток дерев на секції С-2 суттєво залежав від їхнього просторового розміщення в рядах. Які ростуть із південного боку смуги, становив 30,7 ± 0,4 см, що є на 3,3 % більшим, ніж діаметр дерев, які ростуть із північного боку, та на 16 % більшим, ніж діаметр дерев центральних рядів
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