The Density of Pine Wood in Drained Shrub-Sphagnum Pine Forests
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2020, Vol 8, Issue 2
Abstract
The density of wood is a key indicator of its quality. It is necessary to identify the factors affecting the density of wood for its effective and rational use. Knowledge of the features of wood formation in various forest growing conditions will allow to provide its well-targeted production for industrial use. Determination of pine wood density was carried out in the drained shrub-sphagnum pine forests of the Arkhangelsk forestry. Linear sample plots (20 m wide) were laid out near the drainage channel and in the interchannel space at a distance of 40 m from the channel. The distance between drainage channels is 100 m. Wood cores were selected at a height of 1.3 m on the trunk shady side and divided into parts 5 mm long. The conventional wood density was determined by the method of maximum humidity of the samples with a relatively small volume. The conventional wood density of pine in the drained shrub-sphagnum pine forests varied in the range from 0.390 g/cm3 to 0.697 g/cm3; near the drainage channel it was less in comparison with the interchannel space. The distance from the drainage channel in high-density plantations does not affect the conventional wood density. The density of pine wood in middle-aged plantations increases with increasing stand density. In mature and over-mature stands changes in the stand density do not affect the conventional wood density. The limiting values of the conventional wood density of pine are 0.486 g/cm3 with age increase and 0.532 g/cm3 with stand density increase. There is a tendency to increase the wood density with a decrease in the annual ring width. A significant correlation between the density of pine wood and the percentage of late wood was detected in middle-aged pine forests. A decrease in the wood density of the middle part of the trunk radius was found.
Authors and Affiliations
O. N. Tyukavina
Keywords
Related Articles
- EP ID EP683265
- DOI 10.37482/0536-1036-2020-2-73-80
- Views 251
- Downloads 0
Integrated Application of Biostimulants in Cultivation of Siberian Spruce Seedlings (Picea obovata L.)
The article presents the results of a 5-year experiment on the cultivation of Siberian spruce seedlings combined with integrated use of biostimulants. Additionally, it describes an experience in application of the acquir...
Applying Sulfite Liquors as a Nutrient Medium for Cultivation of Lactic Acid Producer Rhizopus oryzae F-1030
The filamentous fungi Rhizopus oryzae are well known for their ability to hydrolyze plant polysaccharides. Representatives of this species are widely used for the production of various products, such as organic acids (la...
Production of High-Yield Hardwood Pulp by Bisulfite Minimizing the Chlorine Content Cooking
The article presents the results of the development of a technological mode for obtaining bisulfite hardwood pulp of high yield on a magnesium base for the production of various types of containerboard. The reliable and...
Improving the Efficiency of Multifunctional Machines for Intensive Forestry
The method of intensification of forestry by means of integrated mechanization of forestry and logging operations is considered. It is proposed to use manipulator-type machines, such as harvesters, forwarders and excavat...
A Predictive Model of the Impact of the Skidding System on Forest Soil in Severe Climatic Conditions
In the Russian Federation logging operations are traditionally carried out in winter. This is due to the predominance of areas with swamped and water-logged (class III and IV) soils in the forest fund, where work of fore...