Larix sibirica Ledeb. s.l. (Pinaceae) in the Lyubimov Garden in Perm

Abstract

In June 2025, as part of a survey of old-age trees in Perm in the Garden named after Lyubimov studied the morphometric parameters of the Larix sibirica Ledeb tree. s.l. (Pinaceae) using a Suunto RM-5/1520 altimeter and measuring tape. The category of sanitary condition is visually determined. A core was selected from the trunk wood using a Haglof Pressler age drill. After standard preparation, the number of annual rings and the amount of radial increments were calculated in the core under an Olympus SZ61TR microscope. The age of the tree was 136 years; the year of planting was 1890. The average increase is 1.1±0.1 mm. For the first two decades, it was at its maximum (5.8±0.5 and 2.5±0.4 mm, respectively); then, until 1959, it gradually decreased. Over the next 40 years, it stabilized at the level of 0.4±0.03 mm. In the last decade, the indicator has exceeded the average level and is 0.5 ±0.2 mm. The historical and cultural value of the tree has been proven. The proximity of the roadway, coupled with a complex of negative environmental factors, does not have a critical impact on the tree. The tree is weakened (category II sanitary condition), which is normal for this age; the trunk continues to grow in height and thickness.