The influence of growing site conditions on wood density of lodgepole pine (Pinus contorta) in Leningrad region
https://doi.org/10.21266/2079-4304.2026.258.196-205
Abstract
The abstract is devoted to the study of the influence of different types of soils on the quality of wood from lodgepole (Pinus contorta Dougl.), introduced in Leningrad region. The main focus is placed on studying the indicators of wood density depending on soil cover and hydrogeological conditions. The research also includes statistical validation of results using methods of variance and correlation analysis. Studies were conducted at four experimental sites located in Orlino and Vrud forest districts. The areas are represented by various soil types: loams, carbonates, peats, and sands. The age of studied cultures is about 40 years old. Measurements of height, diameter, and timber reserves have been carried out for each site. To determine wood density, samples (cores) obtained with Pressler's drill, processed according to Poluboyarinov’s maximum moisture capacity method. Correlation-disperse analysis: Kendall's rank correlation coefficient was calculated to assess relationships between soil characteristics and wood density. Results showed that soil significantly affects forest productivity and growth structure of twisted pine. The lowest wood density was observed on sandy soils, while the highest values occurred on heavy loamy and sod-carbonate soils. Statistically, there is a slight variation in average density (about 3%); however, significant differences were found in stem thickness across different locations. Calculation of Kendall's correlation coefficient confirmed positive relationship between wood density and granulometric composition as well as soil humidity level. This study confirms the importance of considering soil conditions when cultivating twisted pine in Russia. Obtained data indicate the impact of soil structure and fertility on wood quality, emphasizing the need for optimal growing conditions selection to improve economic efficiency of forestry production.
About the Authors
D. A. DanilovRussian Federation
DANILOV Dmitry A. – DSc (Agriculture), Head of Soil Science Department
194021. Institute per. 5. St. Petersburg
M. V. Kobernitskiy
Russian Federation
KOBERNITSKY Mikhail V. – PhD student
194021. Institute per. 5. St. Petersburg
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Review
For citations:
Danilov D.A., Kobernitskiy M.V. The influence of growing site conditions on wood density of lodgepole pine (Pinus contorta) in Leningrad region. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2026;(258):196-205. (In Russ.) https://doi.org/10.21266/2079-4304.2026.258.196-205
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