MORPHOMETRIC PARAMETERS OF THE NEEDLES OF THE SCOTS PINE (PINUS SYLVESTRIS L.) IN VARIOUS ENVIRONMENTAL CONDITIONS OF KOSTANAY REGION

Abstract

The article examines changes in the morphometric and pathological parameters of Scots pine needles in forest stands growing in different environmental conditions on the territory of the Kostanay region. The goal of the study is to describe changes in the length of Scots pine needles and the amount of necrosis on the assimilation apparatus under conditions of technogenic pollution in the city of Kostanay and in the ecologically clean zone of the Arakaragay forest in pine forest stands of different ages. Objectives: to study and analyze the general condition of trees in pine forests of different ages under different environmental conditions, to show the consequences of the influence of technogenic pollution on the state of the assimilation apparatus of Scots pine. In the process of work, the morphometric parameters of Scots pine needles were studied, necrosis was diagnosed and a general assessment of the condition of forest stands was carried out. As a result of the work carried out, statistically significant differences in the length of Scots pine needles in various environmental conditions were established. An increase in the level of crown deprivation in an urbanized area and an increase in the number of necrosis on pine needles are shown. It has been shown that the morphometric indicators of Scots pine needles, the state of the crown and the number of necrosis on the assimilation apparatus of tree stands are important indicators for assessing the influence of environmental factors on the state of tree species.