КЛИМАТИЧЕСКИЙ СИГНАЛ В РАДИАЛЬНОМ ПРИРОСТЕ МОЛОДНЯКА И ДЕРЕВЬЕВ СОСНЫ ОБЫКНОВЕННОЙ

Abstract

The article describes the results of a radial growth (2005–2019) analysis among the trees and undergrowth of Scots pine, which grows under extreme ecological conditions of the Uchalinsky Mining and Processing Plant (the Republic of Bashkortostan). Comparatively large variation of the trait was revealed among the trees in intra- and interannual levels. Multidirectional signals of the climatic factors influence on plant growth were found in the two alternative age groups. Monthly temperatures turned out to be more critical in this process for trees, precipitation was more important for the undergrowth. The fact of a statistically significant correlation of the radial increase with the amount of precipitation in October of previous years was revealed in the first age group. Monthly temperatures in January and July had a significant positive effect on the annual growth of trees, but April temperatures negatively correlated with this indicator. A negative correlation between the high temperatures of June and July and the increase in plant diameter was found in the undergrowth. To ensure a high radial increase in this age group, more precipitation in September of previous years and July of current years is important. It was shown that the occurrence of these patterns in the younger generation of Scots pine depends on forest growing conditions. The results obtained allow to quantify the climatic signals in the growth of the plant and can be useful in predicting the impact of climate change on this species.