Динамика радиальных приростов лиственницы европейской (Larix decidua Mill.) в условиях антропогенной нагрузки

Abstract

The results of a dendrochronological analysis of the European larch (Larix decidua Mill.) forest plantations growth in the zone of influence of motor transport pollution in the territory near the Moscow Ring Road at a distance of 8 and 18 m from the roadbed and in a recreational plantation in the third stage of digression are presented. The influence of these factors at the age of European larch from 5 to 65 years was revealed. It has been established that in plantations near the Moscow Ring Road, the annual radial growth of European larch wood is on average 45 %, in a plantation with a recreational load it makes up 62 % of the increase in the control plot, remote from highways and settlements. Differences in annual increments are statistically significant throughout the entire observation period. The average long-term growth of wood at a distance of 8 m from the Moscow Ring Road is 34 % lower than at a distance of 18 m. With an increase in the distance from the roadbed by 1 m, the annual growth of wood increases by 0,2 mm. In forest plantations of European larch, growths of early wood predominate: in areas near the Moscow Ring Road — an average of 68 % of the annual growth, in a plantation with a recreational load — 63 %, in the control plot — only 49 %.