Protective Forest Belts Research Articles

First record of Biscogniauxia mediterranea (De Not.) Kuntze on Quercus rubra L. in Bulgaria

The endophytic fungus Biscogniauxia mediterranea, a causal agent of charcoal canker disease, was established for the first time on red oak (Quercus rubra) in Bulgaria. Symptomatic trees were found in 2023-2024 in the field protective forest belts planted in the State Hunting Enterprise Balchik (Sokolovo and Trigortsi villages) and State Forest Enterprise Dobrich (Kozloduytsi Village) in northeastern Bulgaria. Water stress during the last growing seasons seems to reduce red oak trees’ resistance and predispose them to be infected with the pathogen B. mediterranea. The disease has caused dieback of infected trees and increased their vulnerability to attacks by xylophagous insect pests.

Основные подходы к снижению запахового загрязнения окружающей среды предприятиями животноводства (обзор)

Modern industrial livestock production is accompanied by emissions into the environment of a wide range of odorforming substances (OFS), which negatively affect the health and quality of life of the population. The problem of protecting atmospheric air from odour pollution (OP) is of high relevance and practical significance. The review critically appraises scientific publications on the control of OP from livestock and poultry farms. Methods of control include the processing of manure with deodorizing materials (reagents, sorbents, enzymes, etc.); inoculation with microorganism strains; adjustment of animal diets; air purification from pollutants; optimization of dispersion; isolation of ОР sources; and odor masking. Agriculture’s focus on adopting green technologies has increased interest in searching environmentally friendly methods of odor control. These are the use of plant extracts, natural sorbents, effective microorganism strains, biofilters, bioscrubbers, biogas plants, planting of protective forest belts that promote the absorption of dust and dispersion of OFS. Each method of OP control has both advantages and disadvantages. Modern “green” methods effectively eliminate odors in large farms, but require high investment and operating costs, which limits their implementation in practice, and relatively low-cost methods (the use of reagents, sorbents, flavoring agents, feed additives) are usually not effective enough. An acceptable result can be obtained by combining various methods of limiting the OFS emission. Control strategies should be selected based on the source of the odor, the effectiveness of the technology on the particular farm, and the cost/benefit ratio of the odor control technology into practice.

Elms (Ulmus L.) in the Branch “Myrhorod Forestry” of the State Specialized Forest Enterprise “Forests of Ukraine”

Introduction Elms are spread in forests, landscaping settlements, and protective forest belts. After several waves of elm mortality from Dutch elm disease (DED) in the 20th century, individual populations recovered or formed resistant hybrids. However, epiphytoties of bacterial and fungal diseases sometimes develop, particularly due to pathogen vectoring by bark beetles. In Ukraine, the spread of elms and their damage by different causes are relatively poorly investigated. This research aimed to discover the features of Ulmus sp. distribution by stand origin, age, and forest site condition in the forest fund of the Branch “Myrhorod Forestry”. Materials and Methods The data as of 2010 and 2017 on the forest fund of enterprises belonging to the Branch “Myrhorod Forestry” of the State Specialized Forest Enterprise “Forests of Ukraine” were selected from the database of Ukrainian State Forest Management Planning Association “Ukrderzhlisproekt” using SQL-query and converted to the *.xls files. Area distribution by types of forest site conditions was assessed following the Ukrainian school of forest typology. Such distributions for the entire area covered with forest vegetation, for subcompartments with elms in the stand composition, and with elms as the dominant species were compared for various elm species and stand origins, using c2-test. The percentages of stand areas of different origins and elm species in 2010 and 2017 were compared using z-test in the two proportions comparisons. The data for subcompartments with various elms as the dominant species and as a part of stands composition have been analyzed by 10-year age classes for different origins (natural and planted). The proportion of the stand area of each 10-year age class was assessed for each set of subcompartments. Then the proportion of the stands’ area, which survives up to a certain age, was evaluated. Results and Conclusions In the Branch “Myrhorod forestry”, an area of natural stands with Ulmus sp. as the dominant species for 2010–2017, and the proportion of U. minor has significantly increased. The most dramatic decrease in the survival rate of all elm species of natural stands occurred in the VI age class and planted stands in the V age class. Respective natural and planted stands were formed in the 1960s and 1970s when the peak of DED occurred in many regions. In the Branch “Myrhorod Forestry”, U. minor prefers moist fertile forest site conditions. U. laevis grows mainly in moist forest site conditions, U. pumila occurs in dry to wet habitats, U. glabra is present only in natural stands and absent in plantations. As part of stand composition, the same elm species grow in a wider range of forest site conditions than elms as the dominant species. 2 Figs., 8 Tables, 31 Refs.

ЭФФЕКТИВНОСТЬ ПРОТИВОЭРОЗИОННЫХ МЕРОПРИЯТИЙ ПРИ ОРГАНИЗАЦИИ ТЕРРИТОРИИ ПАШНИ

At this stage of the development of land management in the Russian Federation, forest reclamation measures, including the design of protective forest belts, play a special role in effectively combating wind erosion on arable land. The article analyzes the effectiveness of the creation of forest belts for the purpose of erosion control organization of the territory of the Pavlograd municipal district, calculates the assessment of the effectiveness of the placement of the projected field protection forest belt, the amount of capital investments, the payback period of design solutions, and also makes a feasibility study of the project proposal.

Damage caused by singing cicadas (Hemiptera: Cicadidae) in the field protective forest belts in South Dobrudzha, Bulgaria

During the period 2020-2023, strong damage caused by singing cicadas (Hemiptera: Cicadidae) were registered on ash trees (Fraxinus spp.) in the field protective forest belts (FPFBs) in South Dobrudzha, northeastern Bulgaria. Bioacoustic studies have shown that the sounds are of Cicada orni. Many exuvia of the species were also found on the trunks and branches of ash trees. On the upper shoots and petioles, numerous oviposition holes were observed, which lead to leaf fall and drying of branch tips. In different FPFBs, tree crown damage ranges from a moderate (25-60% defoliation) to a severe (over 60% defoliation) degree. The attacks were stronger on Fraxinus excelsior and F. americana compared to F. angustifolia. The cicadas affect both old trees and young ash saplings. In young plantations, other tree species (Sophora japonica, Gleditsia triacanthos) were also affected. Imaginal activity of Cicada orni was recorded in July and August, and the peak of egg hatching occurred from early August to mid-September. The high number of Cicada orni necessitates the development of measures to control the pest in the FPFBs.

Ecological role of introduced species and autochthon plants in protective tree belts of South Siberia

Assessment of the condition and morphological structure of tree species that constitute protective forest belts in southern Siberia has shown that plants perform ecological and economic functions under the most extreme conditions. The regions of Southern Siberia are characterized by a complex of negative environmental factors that have an adverse effect on the condition and growth of tree species of protective forest belts (soil conditions, lack of moisture, strong wind, salinization and deflation processes). Poplar and elm are used as introduced species in protective forest belts in South Siberia. Plants are characterized by intensive growth and average salt tolerance. Protective forest belts of autochthonous plant species (birch, pine, larch) have a more satisfactory condition compared to introduced species. However, poplar and elm grow in more difficult conditions (steppe areas of Khakassia), which determines their condition. In terms of growth intensity, as well as horizontal protection, introduced species largely exceed autochthonous plant species. Key words: protective forest belt, species, autochthonous plants, condition, morphological characterization

Assessment of the compliance of the design characteristics of protective forest belts with the snowfall volumes on the Sverdlovsk Railway sections

Assessment of the compliance of the design characteristics of protective forest belts with the snowfall volumes on the Sverdlovsk Railway sections

Health status of the field protective forest belts in Dobrudzha – results from the monitoring carried out in 2022

In 2022, the health status of the field protective forest belts on the territory of the State Hunting Enterprise Balchik and State Forest Enterprises General Toshevo and Dobrich was monitored. The assessment of tree crown condition covered 7069.3 ha (66% of all field protective belts in Bulgaria). The results showed that 70% of monitored belts were in good condition, 23% - in moderate condition, and 7% - in poor condition. Since 2014 the area of the protective forest belts in poor condition has increased 2.6 times, and 76% of them were situated in Dobrudzha region. Ash belts – Fraxinus excelsior (66% of all belts) and Fraxinus americana (10%) were in the worst conditon. In ash belts a process of crown dieback, premature falling of leaves and drying of whole trees were observed. In individual ash belts, drying reached up to 80% of tree crowns, regardless of their age and origin. The drying was mostly due to the biotic factors – insect pests and fungal pathogens. The protective forest belts of Quercus cerris, Q. petraea, Q., rubra and Gleditschia triacanthos stand out as sustainable tree species. It is necessary to significantly upgrade the methodology by which the monitoring of the health status of trees in the field protective forest belts is currently carried out. In the new methodology a detailed description of the type of data that need to be collected, the methods of assessments, and data reporting formats, have to be included.

Development of local eco-network of Lutsk territorial community: features and problems

Introduction. Planning of ecological networks at the local level is one of the most difficult stages of geospatial organization of the territory, which requires a detailed and balanced approach, thorough analysis of topographic materials, land management data and the use of geographic information technologies. Local-level eco-networks have a number of features related to the need for a high level of detalization and connectivity of their components. For them, specific model questions are formed about the assignment of certain areas to the structural and functional elements of the ecological network. At the same time, these elements are complementary elements in the structure of ecological networks of regional importance. The purpose of the article. The purpose of the study is to find out the conditions and specific features of the local eco-network of the Lutsk territorial community, to justify the allocation of its structural and functional elements, the current state of development and recommendations to ensure proper functioning. Methods. To study the features of the territorial organization of preserved areas of the urban community, in particular, as part of the nature reserve network and the Emerald network, substantiation of the boundaries of functional components of the local eco-network, elucidation of functional relationships between its elements, construction of cartographic models methods of field research, comparative geographical analysis, cartographic analysis, statistical analysis were used. Results. The natural conditions of the community, sources of economic impact and anthropogenic transformation of the environment, indicators of nature reserves, the level of naturalness of other areas: swamps, wetlands, water protection zones, forests, protective forest belts, reclaimed areas due to their obvious necessity inclusion in the local eco-network to ensure its functional integrity were analyzed. 13 natural nuclei, seven connecting elements, buffer zones potentially suitable for increasing the area of natural nuclei and ecological corridors of the territory of restoration and territory of natural development have been identified. The scientific novelty. The substantiation of structural and functional elements of the first local level eco-network in Volyn Region is made, the map of the local eco-network is developed, the problems of functioning are determined and the prospects of development are analyzed. Practical significance. The development of the local ecological network of the Lutsk town territorial community is a pilot project of the development of local ecological network of the territorial communities of the Volyn region.

Indicators of snow reserves, runoff of melt water and water absorption in the central forest-steppe region

The article examines the indicators of snow reserves, meltwater runoff and water absorption in the central forest-steppe region. In the stationary experiment at the experimental farm of the Novosilsk Zonal Experimental Station - a branch of the Federal Scientific Center for Agroecology of the Russian Academy of Sciences – the observations were made of the main natural factors: snow deposition, freezing and soil moisture. On the drainage sites with a runoffregulating forest belts of a combined design with low-growing spirea shrubs up to 50 cm, the patterns of snow deposition were studied in order to prevent deep freezing of the soil during winters. The research has shown that low-growing shrubs contributed to the accumulation of snow cover. Before snowmelt, the slightly frozen soil, regardless of moisture, had high water absorption. In the protective forest belt, snow reserves were redistributed, which protected the soil from deep freezing. As a result of three years of observations, the surface runoff of melt water in 2018 on the control areas was weak - 11.8 mm, and on other agricultural areas with a combined runoff-regulating forest belt - very weak (6.2-7.5 mm), i.e., almost 2 times less [9] In 2019 and 2020, there was no spring runoff in all variants. Thus, the weakly frozen soil contributed to the seepage of all melt water into the underlying horizons. Water absorption in 2019 is 110.0-127.0 mm, and in 2020 – 34.0-67.0 mm. No soil washout or erosion was observed during the snowmelt period. A runoff-regulating forest belt of a combined design with lowgrowing bushes contributed to snow accumulation and its redistribution, protecting the soil from deep freezing. The effectiveness of protective forest belts, as well as the redistribution of snow reserves, is closely related to the placement of forest plantations relative to the prevailing directions of snowstorm winds. It is also necessary to take into account other factors (precipitation, the presence of thaws, agricultural background, design, qualitative composition of forest plantations, etc.) The prevailing weather conditions of past winters contributed to the accumulation of snow and the absorption of moisture into the soil. This was also facilitated by the correct location of protective forest belts. Knowing the patterns of the main natural factors, it is possible to control the erosion-hydrological process. The work was carried out within the framework of the state assignment of the Federal Scientific Center for Agroecology of the Russian Academy of Sciences, № FNFE-2022-0012 “Theoretical foundations of the erosion-hydrological process in watersheds, and conceptual directions, ways and principles of creating highly effective environmentally friendly systems for managing this process in order to completely prevent soil erosion.”

Current legal status and regulation of placement, operation and protection of forest belts

The purpose of the article is to investigate what legal status has been established for protective forest belts on agricultural lands. The authors described how the relevant legislation has developed, what gaps and conflicts it has, and what problems arise in law enforcement practice. The paper gives the arguments why such belts shouldn’t have the status of woody vegetation, but forest. It is concluded that the protective forest belts and the corresponding lands should remain state property.

Spatial distribution of physico-chemical parameters of chestnut soils in small watersheds under the influence of forest strips

The soils of agricultural land are degraded, which affects their productivity. Soil properties reflect the ability of soil to prevent the processes of degradation. The article presents materials on the study of chestnut soils of Volgograd region in the system of protective forest belts on arid agricultural lands. The purpose of the study, conducted in 2021, was to establish the spatial impact of protective forest strips on the physico-chemical parameters of the soil in the conditions of a low steepness of the slope of the eastern exposition. To achieve this goal, we investigated theoretical and methodological materials on the experimental plot and studied the selected samples by conducting laboratory analyses of the main indicators (granulometric composition, soil structure coefficient, soil density, organic carbon). As a result of the study of samples from points near the forest belt and within it the following was revealed: high content of organic matter (up to 1.47%) and high density (up to 1.53 g/cm3), sandy loam soil with a light granulometric composition and high content of agronomically valuable aggregates (0.25-10 mm), the structure factor above 1.6. Outside the forest belt and up the slope low carbon content (not more than 0.84 %) low density (not more than 1.32 g/cm3), soil has heavy granulometric composition, structure coefficient decreases to 0.86.

Epizootic in gypsy moth (Lymantria dispar) population in the field protective forest belts of State Hunting Enterprise Balchik in 2022

Biological control of gypsy moth (Lymantria dispar) was carried out in 2021 in the field protective forest belts at the territory of the State Hunting Enterprise Balchik by introducing the entomopathogenic fungus Entomophaga maimaiga (Entomophthorales: Entomophthoraceae). In the same year a mortality rate of 26.1% of the pest population was registered. In 2022 E. maimaiga and multiple nuclear polyhedrosis virus of L dispar (LdMNPV) caused a population collapse of the pest in the region. Azygospores of E. maimaiga were reported in the cadavers of about 5% of middle- and late-instar dead host larvae with LdMNPV polyhedra, which is an indirect indication of initial infection by the fungal pathogen. The epizootic of gypsy moth in the Balchik region is the first recorded case of coinfection by E. maimaiga and LdMNPV in Bulgaria. 

Influence of protective forest belts on snow accumulation in agricultural landscapes

In semi-arid climate conditions, where farming is complicated by a lack of atmospheric moisture, the preservation of snow in an agroforest landscape serves as an additional source of moisture for the growth and development of tree and shrub vegetation. The paper investigates the role of forest belts of a combined structure on the characteristics of snow deposition depending on different patterns of shrub placement (along the top edge, along the lower edge, on both sides). The results of the conducted snow surveys show that experimental sites with shrubs along the top edge are characterized by the highest level of snow accumulation both in the forest belt and in the adjacent field. The snow-retaining function in the forest belt zone is weaker in the presence of shrubs on both sides. It has been established that the values of snow density increase with approaching the forest stand. The highest values were recorded in the forest belt with shrubs along the top edge (up to 0.5 g cm-3). The accumulation of snow and its density eventually affected the amount of snow reserves. The highest values of snow reserves were observed in the forest belt with shrubs along the top edge with a row width of up to 1 m. This contributed to the accumulation of 82-203 mm of snow in the forest belt area (at 43 mm of snowfall). Shrub placement along the lower edge provoked a loss of moisture in the forest belt itself, which made this pattern ineffective. The results obtained can be applied in the design of protective forest belts in the areas with insufficient moisture.

Features of modern genesis of the Ishim steppe watershed plain soils

The genesis main directions of the Ishim steppe watershed plain soils depending on their economic use (arable land, forest belt, abandoned land) during the 1950s – 2020s were revealed. Within the studied region, soils were diagnosed on lands of different use. It is shown that the regional morphogenetic feature of all watershed plain soils is the tonguing of the humus horizon, which is reflected in their classification status by the allocation of a dark-tonguic subtype of the soils. Differentiation of the agrodarkhumus horizon into two subhorizons under the influence of plane-cutting processing was revealed in the agrozem, prevailing by area. The manifestation of postagrogenic transformation of soils occurring under forest belts and under deposits with herbaceous vegetation is determined. Postagrogenic soils are characterized by a granular structure, higher reserves of humus and total nitrogen in a layer of 0–20 cm compared to agrozems. In the soil of the forest belt, a coarse-humus neo-horizon was formed, which is not typical of steppe soils. The soil under abandoned for a long time grassland has signs of dark humus horizon progradation to a state close to a virgin one. The additional surface moistening of micro-subsidence soils causes them to have a higher humus content and its reserves in the 0–100 cm layer, deeper leaching of carbonates, the formation of a clay-illuvial horizon in the carbonate-free zone and prevents the formation of a gypsum horizon. The groundwater level raising in the modern period, which is a consequence of the mass plowing and functioning of impenetrable protective forest belts in the study area, caused the appearance of neo-hydromorphism in watershed plain soils and the formation of quasi-clay subtypes. The results indicate the regional specificity of the genetic properties of the Ishim steppe watershed plain soils that distinguish them from their European counterparts, as well as the influence of agrogenic transformation as an anthropogenic factor on them. This influence is reflected in the morphology of soils, their humus state, the nature of the carbonate and gypsum profiles, the processes of halogenesis in them and the variety of salt profiles.

Analysis of Rural Areas of Ukraine on the Basis of ESA WorldCover 2020

At present, GIS technologies penetrate various spheres of socio-economic life of humankind. In this paper, based on GIS technologies, the main classes of the land cover of Ukraine were analysed with further in-depth study in terms of regions and rural and urban areas. The results of this study are based on ESA WorldCover data; according to them, 32% of Ukraine’s territory can be attributed to urban areas, while 68% – to rural areas. In general, the analysis showed that Ukraine is characterised by a high degree of land using, so the land that was cultivated in 2020 accounted for 55.5% of its area. 70% of rural areas comprise cultivated areas, 30% – in urban areas. The leaders among the oblasts with the largest share of cultivated lands are Zaporizhzhia (76%), Kirovohrad (76%), Mykolaiv (77). An inherent feature of Ukraine’s land structure is a considerable share of land (15.3%) under meadows, hayfields, and pastures, which are vital in restoration and preservation and as an essential element of regional ecosystems. 66% of the territories of this class are concentrated in rural areas, on urban areas – 34%. Most of them are in Luhansk (26%), Lviv (24%) and Volyn (22%) oblasts. The level of forest cover in Ukraine is 23.3%, with 17.7% being forests and the other 6% – protective forest belts, orchards, and arboretums. Rural areas account for 64% of forested areas. The most forested areas are Zakarpattia (68%), Ivano-Frankivsk (54%) and Zhytomyr (45%), while the least forested are Kherson (4%), Zaporizhzhia (5%) and Mykolaiv (6%). In general, 71% of forested areas are rural and 29% are urban. In Ukraine, the share of surface waters covering the geographical area is 2.4%, of which 71% is in rural territories and 29% – in urban territories. Cherkasy (5%), Zaporizhzhia (6%), and Kherson (8%) oblasts are the top three oblasts in terms of surface water supply with 64%, 63% and 82% in rural areas, respectively (Figure 8). In turn, the oblasts with the smallest share of open water areas are Zhytomyr (0.5%), Luhansk (0.4%) and Zakarpattia (0.3%) oblasts, with 77%, 33%, and 46%, respectively.

INVASION VECTORS AND DISTRIBUTION OF SOME INVASIVE PLANT SPECIES IN ARMENIA

The article summarizes information on the penetration and spread of 14 most dangerous or potentially dangerous invasive alien species throughout the territory of Armenia, which threat biodiversity, natural ecosystems and, to some extent, public health. It is shown that eight of the fourteen species were intentionally introduced into Armenia as ornamental plants or for use in landscaping settlements and shelterbelts along the roads and railways. Five of these species are woody plants. Four species appeared on the territory of the republic as a result of their self-dispersal and two species penetrated by accidental introduction. It is noted that the degree of threat to biodiversity and natural ecosystems is shown as “high” for seven species, as “very high” for four species, and three species are listed as “potentially invasive”. However, one species ( Ambrosia artemisiifolia ) is listed as a “very high” threat to public health. The article indicates the absolute need for an examination of the threat of invasion when planning the introduction of plants for the purpose of growing them in open ground, first of all, when creating plantations and using them in landscaping settlements and when creating or restoring damaged forest ecosystems and protective forest belts.

Protective Efficiency of Railway Arbor-Shrub Windbreak Forest Belts in Gobi Regions: Numerical Simulation and Wind Tunnel Tests

The railways in the Gobi area have serious sand hazards. To prevent these hazards and ensure operational safety, plant-based sand prevention is a fundamental measure for the prevention and control of railway wind-sand hazards. This study considers the protective windbreak forest belts along the Lan-Xin Railway, Northwest China as the study area and evaluates its protective benefits from the perspectives of windproof efficiency and sand control efficiency using numerical simulations and wind tunnel testing. Our results show that the disrupting effect of the three shelterbelt rows on the airflow was significantly enhanced, and the wind velocity profile began to change at 2H. As the airflow continued to move forward, the wind velocity profile gradually deviated from the logarithmic law, and an obvious turning point appeared at 13H behind the forest belt. Under different incoming wind velocities, the maximum wind protection efficiency of the three shelterbelt rows appeared at 5H on the leeward side. The maximum wind protection efficiencies in the numerical simulation were 95.1, 90.4, and 88.6%, respectively. The minimum value appeared at 15H on the leeward side, and the minimum wind protection efficiencies were 58.3, 53.1, and 47.1%, respectively. The maximum wind protection efficiencies in the tunnel test were 94.3, 90.1, and 86.5%, and the minimum value appeared at 15H on the leeward side. As the wind velocity increased, the efficiency of wind protection tended to decrease. The sand control efficiencies of the shelterbelt were 93.8, 91.6, and 88.1%, and as the wind velocity increased, the sand control efficiency continued to decrease. In general, the forest belt had a significant effect on reducing the sand flux density, especially below the forest belt height, which can effectively control the wind and sand disasters in some Gobi areas along the Lan-Xin Railway.

Biological aspects of functioning of field protective forest belts in conditions of climate change

In today’s conditions, one of the most actual problems of the agricultural sphere, which occupies 70% of the territory of Ukraine and determines its agricultural potential, is the stability and increasing of the sustainability of agroecosystems. Creating and restoring of a system of field protective forest plantations is one of the most radical ways to maintain the sustainability of agro-ecosystems, increasing of their buffering by partially restoring forest biogeocenosis, which are an integral part of natural landscapes. The aim is to assess the species composition of field protective forest belts, to conduct a comparative analysis of the phytocenotic structure of plant diversity and to identify the main signs of forest biocenosis formation in field protective forest belts as a guarantee of their biological stability The research was conducted through the study of scientific materials of well-known scientists on the biological aspects of the functioning of field protective forest belts in conditions of the climate change. Also, the characteristics and main features of field protective forest belts, their species composition and their vertical location in the structure of the biogeocenosis are given. The value of each component of the food supply chain, which provides the cycle of substances and energy, is considered. Such processes contribute to the development of forest biocenosis, which in turn is a stable self-regulating plantation. Field protective forest belts form a stable vegetation cover, climatic conditions are ecological factors that have a direct impact on the environment and are home to animals, plants, viruses and fungi. The diversity of species in field protective forest belts is directly related to the lifespan of plant communities. Therefore, the younger the field protective forest belts are, the more diverse and intense the life in them is. Therefore, field protective forest belts help to increase the species of flora and fauna in ecosystems and agroecosystems.

The growth of deciduous trees in the protective forest belts of the southern part of Central Siberia

Investigations of the course of growth of protective plantations in Siberia were carried out either in local areas or were carried out on a limited number of tree species. On this basis, the task was set to study the course of growth in height and diameter and to compile tables of growth of deciduous trees of protective forest belts. The source material is based on the data of model trees selected in plantations of protective forest belts in the Republic of Khakassia, Minusinsky district of Krasnoyarsk Territory and the Republic of Tyva. The progress of tree growth in protective forest belts in the southern part of Central Siberia indicates the absence of a single growth line and the presence of significant variation in plant sizes. The selection of trees was carried out in three groups: intensive growth, medium growth and moderate growth. The initial period of the revealed sharp variability of growth was 4 years in drooping birch, 4-6 years old elm, and 7-8 years old black poplar. When approximating growth lines, it is advisable to use the Weibull and Drakin-Vuevsky functions. Both equations are based on “exponential growth.” According to the data of the models, tables of the course of growth of deciduous trees of protective forest belts (drooping birch, elm and black poplar) were compiled. For each group (growth strategy) and tree species, a set of measures is proposed to maintain sustainable growth. As a result, in order to increase the durability of protective plantings, it is necessary to carry out measures, including those aimed at maintaining a sustainable growth.