bluuebunny/crossref_metadata_2025_split huggingface dataset:
The results of the use of gridless technology for the selection and sowing in a forest nursery of 1000 pieces equalized by weight and size (thickness) of Scotch pine seed fractions
Authors: Golev A D , Goleva G G , Ivannikov V A , Bukhtoyarov V N 
Published: November 2021

Abstract
The aim of our research is to analyze the quantitative composition of standard and non-standard Scots pine seedlings grown with all sowing options: calibrated small and large seeds, as well as uncalibrated seeds. As the material for the study, we used a batch of Scots pine seeds, which were divided by weight into two equal parts. Subsequently, one part was calibrated on a sieve-free separator in thickness into small and large fractions, and the second was not calibrated. The size gap in the calibrated fractions was determined experimentally based on the minimum and maximum size of the seed thickness. All the seeds obtained were sown separately from each other in the nursery areas. At the end of the second growing season, using the field method of accounting for the grown planting material, a sample of standard and non-standard seedlings was carried out. As a result, it was found that in crops with calibrated seeds of non-standard seedlings is 25 … 30% less than in crops with non-calibrated seeds. Thus, sowing with Scots pine seeds calibrated in thickness makes it possible to significantly increase the productivity of forest nursery areas in comparison with sowing with uncalibrated seeds.
Modified approach for effective assessment of human resource management in the forest industry
Authors: Zinovyeva I , Kuznetsov S , Stepanova Yu 
Published: November 2021

Abstract
The existing management system in the forest industry complex is not adapted to modern trends and is not integrated into the new practice of human resource management, since even at the stage of personnel selection it is not focused on assessing the skill-set of applicants. The paper identifies the features and factors affecting the human resource management system, and substantiates a modified approach to assessing the effectiveness of human resource management (based on the study of the world experience of management practices). Modern-level indicators based on a person-centered approach have been also defined. The study proposes the incorporation of new architecture of indicators (emotional intelligence, level of transformation of roles in the team, employment of all the roles according to the Belbin model, the coincidence of the company’s goal with the goals of employees, the level of employee skillset) as a part of the modified approach to assessing the effectiveness of human resource management that meets the new requirements. As a result, effective human resource management based on this approach will increase the competitiveness of the Russian forest industry at the international level.
Effect mechanisms of ultrahigh-frequency radiation on biological objects
Authors: Korablev R A , Belocurov V P , Busarin E N 
Published: November 2021

Abstract
The article discusses the effect of microwave radiation on the seeds of Scots pine (Pinus sylvestris L.). The aim of the research is to increase the efficiency of pre-sowing treatment of seeds with Ultra-high-frequency radiation (UHF) radiation, allowing one to increase the standard planting material yield and reduce its cultivation time. The specificity of enzyme systems for stressing effects is revealed, the dynamics of their change in the period after irradiation is ambiguous and depends on the time of irradiation. The stimulating and lethal doses of radiation are determined. The results show seed treatment with stimulating doses causes reversible changes in the structure and function of enzymes. The regularities and model of the impact of UHF radiation as a stimulating factor on seed viability are established. When exposed to stress factors (radiation), an increase in the activity of enzymes is observed, leading to the excitation or inhibition of growth processes at the first stages of development. As a result, a stimulating effect arises – the germination of seeds increases, the growth of seedlings in height increases, or depressing – the germination decreases and the growth of seedlings slows down.
Economic assessment of application of new reforestation technologies in conditions of climate change in the forest-steppe zone of Russia
Authors: Morkovina S , Panyavina E , Podmolodina I , Burmistrov A 
Published: November 2021

Abstract
The development and application of new reforestation technologies remain relevant due to climate change. The main technology of forest sowing in Russia does not provide effective reforestation. Innovative technologies of reforestation based on seedlings with a closed root system make it possible to increase the livelihood of plants and accelerate reforestation processes. Using the method of determining costs, a comparative economic analysis of the technologies for growing oak seedlings with an open and closed root system in the forest-steppe regions of Russia was carried out. It was found that the technology of growing seedlings with a closed root system is less labor-consuming and provides a high level of income for investments. The innovative technology of growing seedlings with a closed root system in greenhouses is more competitive and its use allows to generate income from one hectare of area 50 times more than when growing seedlings in forest nurseries by increasing the number of seedling rotation. A comparative economic assessment of two oak seedling projects under forest-steppe conditions suggests the feasibility of moving to innovative reforestation technologies. In the current climate change conditions, a serious correction of approaches to reforestation in the forest-steppe zones of Russia is necessary.
Forest recultivation of overburden dumps of the Kingisepp phosphorite field
Authors: Nedbaev I S , Elsukova E Y , Kushnir E A , Treschevskaya E I 
Published: November 2021

Abstract
The article is devoted to the study of the stages of forest recultivation of overburden dumps of the Kingisepp phosphorite field’s breed located in the North-West of the Russian Federation. 5 test areas with a total area of 63.7 hectares were laid to study the different stages of recultivation. In the course of the study, the author’s team identified four conditional stages of the formation of the spruce community of the forest recultivation of overburden dumps breed. The first stage, which has the conditional name ‘10 years’ is newly planted spruce trees on the recultivation territory. The second stage of the formation of the spruce community (‘20 years’) is that the European spruce passes into the stand. The third stage of community formation (‘30 years’) consists in the growth of all plantings to the level of a stand and in the creation of a birch-spruce or spruce-birch forest, since at the age of more than 30 years European spruce in recultivation by itself territories can occupy up to 50% of the stand. At the fourth stage, spruces displace birch trees from the community, remaining almost the only representative of the tree layer.
Results of computer modeling of a modular independent tubular suspension of a logging truck
Authors: Nikonov V O , Posmetev V I , Posmetev V V 
Published: November 2021

Abstract
The necessity of increasing the efficiency of timber trucks by improving the designs of their suspensions has been substantiated. The main disadvantages of traditional suspension structures used in modern logging trucks have been described. A promising design of a modular independent tubular torsion bar suspension for a logging truck has been proposed. The aim of the research consisted of two stages. At the first stage, a mathematical model for the functioning of the proposed torsion bar suspension has been developed. At the second stage, a computer program for a preliminary assessment of the effectiveness of the functioning of this suspension (when driving on an insufficiently equipped forest road) has been made. Time dependences of the angular positions of suspension arm fork and ends of the tubular torsion bars were obtained. The regularities of the influence of the movement speed, average height of irregularities, coefficient of dry friction on the relative spread of vertical loads and suspension indicators of vibration dispersions were revealed.
Adaptive forest management in the context of climate change (on the example of the Republic of Srpska (Bosnia and Herzegovina) and the Central Black Earth Region of Russia)
Authors: Prokhorova N , Moiseeva E , Govedar Z 
Published: November 2021

Abstract
The article examines the systems of adaptive forest management in the Republika Srpska (Bosnia and Herzegovina) and forest-steppe and steppe regions of the Central Black Earth region of Russia (within the Voronezh region) in the context of climate change, suggests measures for adaptive forest management. The concept of adaptive measures can be useful to rationalize and focus existing views on adaptation and restoration of forests. This area is designed to help reforestation, with particular attention to the ability of ecosystems to self-organize in the future and adapt to changing environmental conditions. adaptive capacity It is imperative to consider new or unparalleled ecosystems to ensure the best mix of ecosystem services in the face of future uncertainties. substantiation of improving models of forestry in the context of climate change and ensuring their practical implementation. Directions for further research in this area should relate to the development of risk-based planning approaches and multi-stakeholder decision-making.
Recycling of forestry waste
Authors: Yakovleva E , Titova E 
Published: November 2021

Abstract
The article examines the current state of wood waste recycling in the interests of ensuring sustainable development and minimizing the impact on climate change. Classification of wood waste based on the stage of the life cycle of a wood product has been carried out. The problem of organization of wood waste disposal and processing is relevant both directly in the forest industry and in the process of using wood since this leads to the preservation of primary wood material and significantly reduces the volume of deforestation. During the study methods of wood waste recycling and options for complex recycling have been identified. A wood waste recycling scheme which includes such stages as collecting wood waste, deep wood processing and involvement in secondary circulation has been developed. An econometric analysis of correlation between current environmental costs and indicators of economic activity associated with the use of wood waste on innovative basis has been carried out. It has been concluded that there is a tight relationship between the costs of environmental protection and the selected factors. The research results can be used in the development of wood waste recycling schemes by various economic entities of timber and woodworking sectors.
Ecology of the aviafauna of the Voronezh upland oak forest
Authors: Turchaninova E 
Published: November 2021

Abstract
The article presents the results of the analysis of changes in the fauna, population and ecology of the dominant and background bird species of the Voronezh upland oak forest, depending on the level of the recreational load. The object of research is the Voronezh upland oak grove, a unique natural landscape complex located within the city of Voronezh in the Central Federal District. The research period is 2014-2018. The census was carried out according to the standard method of counting birds according to the spring mating song with a fixed width of the counting strip equal to 50 m. The length of each route was 10,000 m. The results of the study showed that on the territory of the Voronezh upland oak forest, background and dominant bird species are represented by 38 species belonging to 5 orders … Most of the species belong to the order Passeriformes. In areas with a high degree of recreation, the number of synanthropic species and birds with a mixed type of diet increases. The consequences of the recreational impact are reflected in the number and species composition of birds.
Concentration-dependent stimulating and toxic effects of ZrS3 and TiS3 nanoribbons on forest woody plants in tissue culture in vitro
Authors: Zakharova O , Vasyukova I , Muratov D S , Korenkov V , Baranchikov P , Gusev A 
Published: November 2021

Abstract
Nanotechnology has a great potential for application in applied biotechnology. Here we demonstrate the effectiveness of synthesized by direct reaction ZrS3 and TiS3 nanoribbons as sterilizing agents, growth stimulators and activators of rhizogenesis of micro-sprouts of tree crops during clonal micropropagation. At the initiation stage at 6 and 15 μg/L ZrS3 and 3, 6 and 15 μg/L TiS3, complete sterility of shoots of brittle willow, red oak and Scots pine was noted. The maximum survival rate and seedling height at this stage was in the groups of 1.5 μg/L ZrS3 and 3 μg/L TiS3. An increase in the concentration of nanomaterials to 15 μg/L significantly reduced the viability of plants. At the proliferation stage the concentration of nanomaterials 1.5 and 3 μg/L increased the survival rate of regenerants, and at 3 μg/L with the phytohormones (benzylaminopurine, indoleacetic acid, gibberelic acid) the number of additional shoots increased. At the rooting stage ZrS3 and TiS3 at doses of 1.5 and 3 μg/L with auxin activated rhizogenesis, significantly increasing the number of seedlings with roots in comparison with the variants where only auxin were used. This effects can be associated both with the direct action of nanoribbons and with the release of hydrogen sulfide as a result of aqueous hydrolysis of nanoribbons, since H2S plays an important role in the regulation of plant physiological processes.
Increase of wear resistance of crankshafts of timber transport machines
Authors: Yakovlev K A , Latynin A V 
Published: November 2021

Abstract
The paper considers the technological process of restoration of crankshaft necks by plasma spraying with wear-resistant thermoreacting powder PG-NA80. Wear of the crankshaft necks during operation requires repair, restoration or replacement of this part. As a result of the literature analysis, plasma spraying was found to be the most optimal and relatively inexpensive method of crankshaft recovery. The purpose of our work is to investigate the wear resistance properties of the sprayed coating and the search for op-optimal parameters of its application process. The sprayed coatings were studied according to two parameters: joint strength and wear resistance. For the study, experimental equipment of the plasma spraying laboratory of the department was used. As a result of the experimental study, separate regression equations of the effect of the main factors of plasma spraying on relative wear resistance were obtained. A comparison of physical, mechanical and tribotechnical characteristics showed an improvement in the properties of coatings by 8-12% obtained from thermoreacting powder in comparison with traditional PGSR-4 and PN55T45. Analysis of the obtained research results showed that this technological process can be effectively used to restore worn out crankshafts of forestry vehicles.
Efficiency evaluation of the weighted mean calculation of the forest fire hazard class
Authors: Kotelnikov R V , Chugaev A N 
Published: November 2021

Abstract
Nowadays, cost-optimization of aerial patrolling plays a key role in the context of limited aerial forest protection funding. Forest Fire Danger Class is the main indicator that regulates the work of forest fire services. Usually, it’s calculated by the nearest weather station data. Some information systems use the mean of several nearby weather stations to estimate large areas, such as the surveyed area of aerial forest protection. The idea of using the mean weighted index with the weather stations weighting factor is not new. Even though, this idea isn’t widespread due to the calculation complexity and questionable efficiency in practice, this study proposes a scientifically substantiated method of quantitative comparison of two approaches and the direct calculation method of the economic impact when transition to using the mean weighted Forest Fire Danger Class calculation algorithm. The first time such an indicator was used to obtain derivatives of analytical information products. A long-term analysis of forest fire rate showed that the weighted mean of the Forest Fire Danger Class value is 6.7% greater in correlation with the number of forest fires than the usual mean value. The use logarithmic transformation of the forest fire occurrence frequency and population density allows statistical criteria to be reasonably used.
Resource-saving technologies in the production of glued laminated lumber with a glue line of increased strength
Authors: Latynin A V , Popov V M , Shvyrev A N , Lushnikova E N , Iakovlev K A , Garkusha O S , Usenko N S 
Published: November 2021

Abstract
One of the main problems of forestry is increased number of fellings and deforestation. Development of promising technologies in woodworking industry is one of the solutions to this problem. These technologies make it possible to reduce the production cost through the use of cheap and non-scarce materials and improve the quality of the resulting products to the level of premium products by improving the quality of the adhesive bond. The aim of the study is to obtain high-quality glued timber from non-grade oak wood (Quercus Robur L.) based on urea formaldehyde (resin, subsequently treated with ultrasound and constant magnetic field. The studies have shown that strength values of the adhesive bond based on the resin, subjected to shear testing along the wood grain, are significantly higher than that of the control specimens obtained using standard technology. Also, additional studies of internal stresses in the glue line and analysis of the microstructure were carried out. They enable obtain an explanation of the strengthening effect of adhesive joint.
Environmental properties of Phaeozems humus horizons of the Voronezh upland oak forest (Russia)
Authors: Alaeva L , Belik A , Gorbunova Y , Kharchenko N , Deviatova T 
Published: November 2021

Abstract
Within Voronezh city there is a green zone, the core of which are forest clusters of natural origin. The study sites are located in the recreational area of an upland oak forest. In such conditions, the forest litter and the upper soil horizon first experience transformation. All results were processed by StatSoft STATISTICA for Windows 10.0. In this study we found that low-thickness forest litter was formed in the Voronezh oak forest, in which the average content of macronutrients was (%): C – 2.91, N – 1.11, K – 0.32, and P – 0.18. These elements can be arranged in a variation series C > N > K > P. It is established that the edaphotope of oak forests of the forest-steppe has a favorable regime for the destruction of organic substances and the accumulation of decomposition products. The content of macronutrients in the forest litter and the upper part of the humus horizon is arranged in the same row N > K > P, which indicates their genetic relationship. The obtained data on the ecological state of the forest litter and the humus horizon of the gray forest soils of the oak forests of the megalopolis are important for understanding the biological cycle under conditions of technogenic and recreational loads.
In vitro selection of birch for tolerance to salinity stress
Authors: Mashkina O S , Tabatskaya T M , Korchagin O M 
Published: November 2021

Abstract

In vitro modelling of stress is one of the promising avenues for plant breeding for tolerance to negative environmental factors. In this study we examined the effect of NaCl (0.5%) on callusogenesis and morphogenesis of stem explants of different birch genotypes: Betula pendula Roth, B. pendula Roth var. carelica (Mercklin) Hämet-Ahti, B. pendula f. ‘dalecarlica’ (L.f.) Schneid., B. pubescens Ehrh. In our experiments we used pre-selected microclones from our in vitro collection on NaCl (0.2-1.0%) selective media. The clones were contrasted by the degree of their sensitivity to salinity (so-called ‘stable’ and ‘sensitive’ microclones). With the use of stem callus cultures we identified informative, simple and reproducible indicators for the selection of salt-tolerant genotypes. Among these indicators were the frequency of callus formation and the viability of callus cultures, which were significantly higher in ‘stable’ group of microclones. Polyploid birch clones (2n=4x=56, 2n=3x=42) were more resistant to salination compared to diploid clones (2n=28). Our study has shown that the selection of salt-tolerant birch lines can be based on the plants’ genetic diversity presented in the collection (various species, varieties, hybrids, polyploids) and manifested in the process of in vitro cultivation, as well as in the cellular heterogeneity of callus cultures.
Subsurface geological model of Malay basin using free air anomaly
Authors: Hwee Chia Jing , Jamil Farouq , Sidek Akhmal , Jaafar Zaidi , Junin Radzuan , Omar Shaziera , Hasani Fadzlin , Supee Aizuddin , Arifin Mohd Hariri 
Published: November 2021

Abstract
The aim of gravity survey is to assist in the detection and delineation of subsurface geological features such as salt domes and faults. In this study, free air anomaly (FAA) data was adopted for mapping and modelling process to delineate subsurface geological features and basement depth in Malay Basin. FAA is the measured gravity anomaly after a free air correction is applied, and it is used for elevation correction. The data of FAA in this study is obtained from Earth Gravitational Model (EGM) 2008 released by the National Geospatial-Intelligence Agency (NGA)-EGM Development Team. Oasis Montaj software was used in the mapping and modelling process whereby the base map which constructed by the Oasis Montaj is used to form the FAA map of Malay Basin. Typically, the positive anomaly is associated with the high-density intrusion at the base of the crust, while in contrast (negative anomaly), it is related to the sedimentary basin in the upper crust. On top of that, the regional-residual anomaly, total horizontal derivative (THD) and 3D Euler Deconvolution enhanced maps were produced and interpreted to acquire comprehensive insight of subsurface geological features. To conclude, this study showed 5% deviation as compared to previous reported works and the deepest basement depth encountered is 14.5 km.