Spatial structure of pine plantations in atmospheric pollution of emission of JSC “Azot”, Rivne
Journal Title: Лісівництво і агролісомеліорація - Year 2014, Vol 125, Issue
Abstract
Changes in condition and spatial structure of pine stands under atmospheric pollution of JSC “Azot”, Rivne, were studied during last 20 years. The study is based on the method of comparative ecology. The investigations were carried out in four permanent sample plots established at a distance of 4.5–25 km from JSC "Azot" in accordance with the forestry and forest inventory methods. Significant changes in stand spatial structure were determined, particularly, in size and horizontal and vertical shape of crowns as a result of aerotechnogenic pollution. The dynamics of the state, basic taxation parameters and potential of the stand were defined. As a result of the narrowing range “max-min” in diameter and height of trunk and the length and decrease in the proportion of crown in height of the tree, photosynthetic capacity of the stand decreased. These changes are closely related to technogenic preasure and has both spatial and temporal expression. Spatial trend is that the size of the middle Kraft class decreases and the percentage of strongly dominant and dominant trees increases with the distance from "Azot". Similar trends are observed in temporal terms. Dimensions of trunks and crowns of trees decreases with the deterioration and lowering of Kraft class.
Authors and Affiliations
V. Voron, O. Bologov
Keywords
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