The article highlights the merits of the famous Siberian scientist and teacher, an outstanding representative of the scientific school of Anatoly Platonovich Abaimov, who made a valuable contribution to the study of the dynamics of Siberian forests under the influence of fires, studies of the structure and dynamics of forests in the field of continuous permafrost. His teaching activity for many years was associated with the Siberian Institute of Technology, University. For many years he held the position of professor of the Forestry Department of the Siberian State Technological University, developed a special course in permafrost forestry, was the author of many textbooks and programs. In the scientific community, A. P. Abaimov is known as a talented mentor of young scientists. Under his leadership, PhD and doctoral dissertations were defended, the authors of which work in many universities, Russian and foreign. Anatoly Platonovich was the deputy chairman of the Dissertation Council of the Forest Institute, a member of the dissertation Council of the Siberian State Technological University. A. P. Abaimov was the head of a number of scientific projects, including international ones.

The most promising approach to studying the quality of the urban environment in general, and its individual components, in particular woody vegetation, is the concept of environmental monitoring, which is based on the organization of a system of continuous observations, analysis and forecast of its state. The technological basis for monitoring the state of urban landscaping objects is a combination of biological and technical methods for obtaining information using selective research methods and a system for processing, analyzing and storing information using thematic and cartographic data banks and hierarchically subordinate, interconnected, adequately reflecting the ecological situation observed in the city indicators. Based on this, landscaping objects were selected – nine squares located in the city of Krasnoyarsk in territories with different levels of anthropogenic impacts, as close as possible to the observation posts for the state of the environment: “Lesok”, “Silver”, “Cosmonauts”, “Fabulous”, “Panyukovsky”, “Enthusiasts”, “Jubilee”, “Odessa”, “im. I. V. Surikov” and two control plots located in the green zone of Krasnoyarsk (Fruit and berry station and UZS nursery).
On the basis of generally accepted and author's methods, ecological passports of landscaping objects were formed. The environmental passport of the facility includes such sections as a situational plan, the balance of the territory of the facility, quantitative data on landscaping and qualitative characteristics of the state of vegetation and the road network, data on recreational load, calculations of the level of gas pollution and noise load from traffic flows on adjacent highways, fragments of which are presented in the article. The analysis of the received materials showed that: all the presented squares are objects of landscaping for general use and belong to objects of regional significance; the areas of these squares are in the range from 0.81 to 2.95 hectares, with the exception of the square "Cosmonauts", whose area is 6.96 hectares. At the same time, it was found that in squares with an area of up to three hectares, the zone of a comfortable environment can be only 9 %, in landscaping objects with an area of 7 to 20 hectares – up to 30 %, provided that the territories are compact, thus, in the square “Odessky” there is no comfort zone, because has an elongated shape and is located along the carriageway of a highway with heavy traffic (with freight traffic), Lesok Square – on the contrary, although it is small in size, it is located in a residential area away from highways, the Cosmonauts Square has the largest comfort zone due to the large territory and remoteness of its main part from the highway. The inventory assessment of plantings showed that the life condition of drooping birch and small-leaved linden in the city as a whole is estimated from “healthy” to “dying off”, the index varies from 100 to 15, naturally decreasing in critical growing conditions, the relationship of age, damage class with air quality allows the use of drooping birch and small-leaved linden as an indicator species for assessing aerotechnogenic pollution of cities, and this circumstance must be taken into account when creating urban plantations at landscaping objects with various technogenic loads.

The effectiveness of artificial afforestation largely depends on the quality of planting material when creating forest plantations. Planting material grown in forest nurseries in the open field and in greenhouses had a number of significant drawbacks. Seedlings or saplings for creating forest crops were used with an open root system, which sharply limited the planting time. A delay in planting can lead to the drying of the upper soil horizons and, as a result, to the death of the planted plants or low survival rates. In addition, when planting, especially in hot windy weather, the root systems of seedlings (seedlings) dried up, which led to their death. Thus, the main disadvantage of planting material with an open root system was the limited period of time for the creation of forest plantations, which largely depended on weather conditions. With large volumes of artificial afforestation or reforestation, even with the implementation of mechanized planting, there were huge difficulties in planting at the optimum time. Planting material with a closed root system – seedlings (or seedlings), the root systems of which are located inside the root-covering substrate. Planting material with a closed root system has a number of advantages compared to an open root system: it has a higher drought resistance, the water supply in the substrate coma increases the period of its non-irrigation maintenance during storage and transportation, planting material planted on a silvicultural area with a closed root system has a longer period without atmospheric moisture. These circumstances explain the increased attention to the development of technologies for growing planting material with a closed root system. The article presents the Russian and world experience in growing planting material with a closed root system. The first experience of growing seedlings with a closed root system in Krasnoyarsk on the basis of the greenhouse complex MP "UZS" in 2021 is described in sufficient detail.

We studied the taxation indicators of clones of plus trees of Scots pine on a forest-seed plantation in the Kovrovsky district forestry of the Vladimir region. It was laid in 2020 by two-year-old grafted seedlings with a closed root system according to the 7×8 m placement scheme with an initial number of 3352 seats, has a total area of 22.3 hectares with a density of 178.6 pcs./ha. The design number of plus trees in the assortment is 50 units. The terrain of the site is flat, the type of forest growing conditions corresponds to category A2 with poor slightly humusized sandy soils. It belongs to the area of coniferous-broadleaf (mixed) forests of the European part of the Russian Federation and is included in the zone of coniferous-broadleaf forests. The forest growing conditions of the region are quite favorable for the growth and seed-bearing of scots pine. The purpose of the study is to evaluate the variability and correlation of the taxation indicators of the clones of plus–sized pine trees as part of a forest seed plantation on the territory of the Kovrov district forestry of the Vladimir region. The methodological basis of the research was the principles of the only logical difference, typicality, suitability, reliability and expediency of experience. The collection of forestry information was carried out by a stationary field method with a continuous enumeration of trees on the LSP. The variability of taxation indicators in vegetative offspring of plus trees was recorded both at the level of differences between groups of clones of the same name, and within each of them. The ratio of the height limits was 3.53 with the formation of a range of 43 cm; the diameter of the trunk at the root neck was 4.00 with an excess of 12 mm; the volume of the view cylinder is 36.80 with a difference of 89.98 cm3. A very high positive relationship was recorded between the trunk diameter at the root neck and the trunk cross-sectional area (r±mr = 0.988±0.007; tr = 132.40), as well as between the average crown diameter and its projection area (r±mr = 0.983±0.009; tr = 111.22). Regression analysis gave a comparable result.

Cedar-broadleaved forests in the Far East occupy an area of just over 3 million hectares. The Amur linden (Phellodendron amurense) is a permanent participant of the forest formation process in cedar-broadleaved forests. Volumetric, assortment and commodity tables were developed for this species in the last century. There are no growth progress tables for this species. In the present article, the growth rate tables for Amur linden were constructed based on the materials of the state forest inventory. Experimental material was 254 model trees of Amur linden from permanent plots laid in plantations of different forest types and bonitet classes. Two approaches were used to study the growth patterns of Amur linden. In the first case, tree diameter was taken as an independent variable in the alignment of taxation indices, while in the second case, tree age was taken as an independent variable. By design, the first variant of the growth rate table corresponds to a discharge scale of volumes, in the second case, to the generally accepted form. In both variants, the total tree productivity as well as bark volume were calculated. The number of trunks was calculated through the thinning constant. In plantations, Amur linden occurs both as single specimens and in groups of 10 to 30 trees. In the analyzed sample, the maximum age of linden trees is 190 years, height 30 m, diameter 100 cm or more. The developed tables of the course of growth reflect the growth patterns of the Amur linden growing in the Amur- Priamorsky coniferous-broadleaf region. The compiled productivity tables can be used to calculate timber reserves, honey production, bark volumes, the amount of damage when plantations are damaged by fires, and for other purposes. The high growth rate of Amur linden trees at a young age indicates that this species is promising for afforestation.

A comparative analysis of indicators of reproductive development of 53–55-year-old Siberian cedar pine trees growing in the suburban area of Krasnoyarsk with different planting density (400 and 5000 pcs/ha) was carried out. The prevalence of specimens that entered the reproductive stage of development in sparse growing conditions was
revealed by 2.75 times in comparison with thickened plantings. The influence of planting density on the yield of Siberian cedar pine is noted. On trees with better growth conditions with a lower planting density, a significantly larger number of cones were formed.
Trees growing on plantations have a larger trunk diameter, thicker branches in the lower part of the crown, but 2.5 times the length of the beetle-free zone than trees growing at a higher density.

The study analyzes the factors that have a significant impact on the efficiency of the Russian forest sector. The methods of state support of the forestry sector in Russia and abroad are considered. For countries that are active forest users, the existing administrative and economic incentive instruments for the development of forest areas and the introduction of advanced technologies have been determined. Economic incentive instruments are represented by preferential taxation, state subsidies, and priority investment projects. It was revealed that the direct transfer of foreign experience in stimulating the efficiency of the forest complex, without taking into account the specifics of local administrative-legal and natural-climatic, socio-demographic conditions, is not possible. On the example of the Krasnoyarsk Territory, the results of the mechanism of state stimulation of the forest sector implemented in Russia by supporting priority investment projects in the field of forest management are analyzed.

Lands disturbed by the mining activities should be subject to mandatory biological reclamation. Modern ideas about the conservation of biological diversity suggest the formation of nature-like communities within the framework of reclamation. The purpose of our work is to capitalize many years of experience in biological reclamation and hunting management to develop basic approaches to forest reclamation of disturbed lands, from the standpoint of the formation of protective and fodder conditions for the future forest to ensure the successful resettlement of herbivorous wildlife Study of coal mines dumps reclaimed 30–40 years ago showed that in all cases the abundance of animals was significantly inferior to that in undisturbed territories. The monoculture method used does not provide favorable conditions for animals, therefore it is preferable to create multi-species mixed plantations. The proportion of shrubs should be about 50% of the total forest stand, since it is shrubs that create protective conditions for the nesting of many songbirds and provide animals with food. During forest reclamation, it is necessary to provide for the formation of an extended edge line, including the laying of forest glades, which in the summer will act as places for feeding animals and birds. The share of legumes in glades, as the main source of vegetable protein, in grass mixtures should be at least 20 %. Meadows and watering places are also important to ensure favorable feeding conditions. Therefore, the banks of flooded quarries should be as flattened as possible and go into shallow water to ensure the formation of wet meadows. Part of the shoreline should be planted with willow Salix L., which will create protective conditions for near-water birds, and warmed shallow waters will provide them with food.

The indicators of the seed offspring of the second generation of 15-year-old Siberian cedar pine, growing in the Karaulny forestry of the Educational and Experimental Forestry of SibSU (in the suburban zone of Krasnoyarsk), are given. Planting material is grown from seeds collected on a grafting plantation from mother trees of different geographical origin. Trees are planted on the plantation “LET-2” according to the scheme of 4×4 m. It was found that the plants have an average height of 1.1–1.4 m according to the experimental options, the length of the needles is 9.2– 10.0 cm. The maximum height is distinguished by the offspring of Tuvan origin, the length of the needles – by Tyumen and Yartsevo origin, the maximum amount of the current increase has trees of Altai origin. Three macrostrobyls were formed at this age on tree No. 14-40 of Chita origin. Specimens were selected in variants of different geographical origin according to the intensity of growth and the length of needles, which are recommended for vegetative reproduction to create plantations for the intended purpose.

The efficiency of using photosynthetically active radiation by trees largely depends on the architecture of the assimilation apparatus in their crown. It is known that an increase in the level of atmospheric pollution is accompanied, on the one hand, by an increase in the foliage density on the shoot length, and on the other hand, by an increase in the transparency of the crown due to the expansion of the leafless inner part of the crown. On this basis, we assume that the foliage density of shoots is a sensitive indicator of changes in growing conditions not only due to environmental pollution, but also in a broader ecological aspect, in particular, in the geographical gradients of Eurasia. For this purpose, a database of empirical data has been formed in the amount of 558 model trees of Scots pine of natural and artificial origin from 6 regions of Northern Eurasia with a measured percentage of needle biomass in tree greenery, or tree verdure (shoots covered with needles) biomass. A regression model has been developed in which the tree age and stem diameter, as well as geographical coordinates of habitats, are used as independent variables. An increase in the needle percentage of shoots was found both in the direction from north to south due to a decrease in the moisture supply of habitats, and in the direction from west to east due to an increase in the climate continentality. Thus, the percentage of needle biomass in tree greenery of Scots pine is an indicator of changes in growing conditions in the geographical gradients of Eurasia.

The purpose of this work was to establish the features of the dynamics of carbon sequestration in the stands of Siberian larch (Larix sibirica Ledeb.) in the Lower Angara region. The results obtained can be used in developing a methodology for assessing the stocks of carbon sequestration in the phytomass of forest stands and forming a regulatory framework for assessing the sequestration potential of forest areas. Based on the materials of 10 trial plots with felling and measurement of 392 model trees, as well as natural census materials in the amount of 858 taxation sections, an analysis was made of the structure of the Siberian larch forest in the Lower Angara region. The age structure of the forest area, the features of the distribution of forest stocks in the forest area, the structure of the density of forest stands included in different age groups have been established. Mathematical models of the dynamics of the main taxation indicators of larch forests are obtained. The process is fairly accurately approximated by the Weibull function. The transition to the stock of deposited carbon was carried out using the conversion-volume method. Conversion coefficients were used that connect the fractional ratios of phytomass to the stock of forest stands (Ph/m) with the age of the latter. Conversion factors were then applied to establish stocks of sequestered carbon. The dynamics of stocks of deposited carbon with a high degree of adequacy corresponds to a mathematical model based on the Richards function.

In the timber industry, the subject of labor has a high variability of dimensional and qualitative characteristics and ambiguity of positioning when loading on stream, which seriously complicates the technological process of primary processing of wood raw materials with increasing demands for high productivity and product quality. Movements are the basis for performing operations with all types of technological process of primary processing of wood raw materials (whipping or short woods).
In-line technologies of the timber industry complex of the Russian Federation are the basis of industrial production of goods and semi-finished products for various purposes. In the foreseeable future, these are the most promising technologies that will provide high quality products along with high productivity and are the most adapted to advanced automation. The most suitable method for modeling the displacement operations is the method of matrix transformations of coordinates (MTC) – displacements of the coordinates, rotations around the coordinate axes and the ability to record the structure of a sequential technological process in the form of a product of matrices. The latter allows to represent the structure of the technological process in the form of interrelated operations.
The object of this work is to create a method for modeling of in-line technology from more than two sequentially installed equipment of various types. This object is formulated according to the well-known scientific works on the creation of models of the technological process of in-line technologies, which indicate the lack of formalization of lines with more than two sequentially installed machines.
The paper proposes a design scheme of production line of three machines with individual drives for processing long-length wood raw materials. When compiling a process model, a “floating” method of setting coordinates was used, which differs from the Denavit–Hartenberg method in the absence of an absolute, fixed coordinate system.
The modeling process is divided into two stages. The first stage is the creation of a production line model in the form of a product of square diagonal unit matrices 4×4. The use of 4×4 matrices made it possible to create an “ideal” production line model formalized as a product of 4×4 matrices that display the sequence of the process in the form of a cyclogram. At the second stage, an idealized model of the cyclogram type is created. As a result of the analysis of the cyclogram-type model, conclusions are drawn about the limited informativeness of the created model, it is proposed to use a model based on 4×4 matrices in the structural analysis of the technological process by functionality.

The influence of the addition of high-pressure polyethylene (HDPE) particles on the physical and mechanical characteristics of the composite material obtained based on hydrolyzed pine wood was studied. Pre-treatment of wood chips was carried out by the method of explosive auto-hydrolysis. Samples of the composite material were obtained by hot pressing a mixture of dried hydrolyzed wood particles and HDPE particles without adding other binder components. It was found that the introduction of crushed HDPE in an amount of up to 5 mass parts. per 100 mass parts of hydrolyzed wood into the composition of the press mass leads to an exponential increase in the static bending strength of the composite material up to 15 % compared to the material without HDPE. In addition, the use of even an insignificant amount of HDPE increases the impact toughness of the composite material by at least 30 %. The use of HDPE in amounts exceeding 5 mass parts causes a smooth decrease in the static bending strength described by an inverse exponential law. It has been suggested that the decrease in strength is caused by a change in the nature of the interfacial interaction of the components of the press composition when large amounts of HDPE are used. It was also found that the addition of HDPE particles improves the hydrophobic characteristics of the composite material. Dependences of water absorption and swelling of the material on the amount of HDPE have inverse-exponential character within the most part of the HDPE particles application range. Compared with the control sample, water absorption and swelling in thickness can be reduced by 1.5 times.The use of HDPE in an amount not exceeding 1 mass fraction has no significant effect on the hydrophobic characteristics.

The Fourth Industrial Revolution, or “Industry 4.0”, is a concept of technological The development of computer technology has a significant impact on all areas of human activity, simplifying his life. At the same time, not only the hardware component is being improved, but also the software, including computer-aided design systems that can facilitate the engineer's work not only in developing design documentation, but also in performing time-consuming strength calculations of any complexity. SolidWorks is designed to solve such problems. In addition, the use of specialized structural analysis tools SolidWorks Simulation, SolidWorks Motion and others will significantly relieve the engineer's mental work by eliminating monotonous arithmetic calculations.
The object of research of this scientific work is the frame of a greenhouse for growing seedlings with a closed root system. The subject of research is stresses arising in the structure of the greenhouse under the influence of snow load and gravity. The purpose of the work is to substantiate the design parameters of the greenhouse frame for growing seedlings with a root-balled tree system based on the analysis of loads and stresses arising in its elements under the influence of the weight of structural elements and snow impacts to ensure the necessary and sufficient strength by the method of solid modeling.
During the work, a study of the model of the greenhouse frame for growing seedlings with ZKS was carried out in order to optimize the design. As a result of the study, the following were determined: maximum stresses arising on the greenhouse framework under the influence of snow load; the most loaded points of the structure. Recommendations for design optimization are given.