Current status and growth of shelterbelts in the Kharkiv region and their meliorative efficiency
Journal Title: Лісівництво і агролісомеліорація - Year 2018, Vol 133, Issue
Abstract
The article presents results of research on the growth and health of 68–70-year-old forest shelterbelts in which the proportion of oak (Quercus robur L.) is from 2 to 10 units. Mensuration indicators and forest-meliorative characteristics of linear shelterbelts were determined. The health condition of shelterbelts was found to be unsatisfactory. The construction of the shelterbelts at the present stage of their development has changed to less effective. In the stand composition, the proportion of oak has decreased, often up to 2–3 units; the oak has been usually replaced by Fraxinus excelsior L. and Acer platanoides. The actual width of the shelter belts was 1.5–3.5 larger than the projected one according to projections of the tree crowns due to the intensive expansion of the crowns of the outside rows towards the field. The trees’ growth intensity in shelterbelts was significantly dependent on their spatial placement in the shelterbelt, so the average diameter of trees that grow in the outside rows was 10.2–20.9% higher compared with the average diameter of the planting. It was revealed that the best health condition was observed for the trees of Acer platanoides (1.0–2.8 points). According to the multiple regression analysis, the openness of the lower part of the profile is determined by the density of the large and average undergrowth (R2 = 0,37).
Authors and Affiliations
S. V. Sydorenko, S. H. Sydorenko
Keywords
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- EP ID EP533008
- DOI 10.33220/1026-3365.133.2018.39
- Views 176
- Downloads 0
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