Volgograd Region Research Articles

IMPROVED TECHNOLOGIES FOR GROWING SEEDLINGS OF FOREST-FORMING SPECIES IN THE VOLGOGRAD REGION

Background. Issues on improvement of technologies of cultivation of planting material are associated with the need to intensify this process to provide an accessible and adapted assortment of woody species. Modern strategies for implementation of natural climatic solutions on degraded lands of Volgograd region provide for attraction of forest-forming adaptive tree species: Quercus (39,8%), Pinus (15,8%), Populus (7,5%).
 Purpose. Improve the technology of production of Quercus robur planting material.
 Materials and methods. On the basis of the Nizhnevolzhsk tree breeding station - a branch of the Federal Research Center of Agroecology RAS (Kamyshin, Volgograd Region), outdoor and indoor plots were allocated to improve production technology. Certified seed material Quercus robur L. (certificate of quality №34/25675, 34/25727) was used in the experiments. To ensure optimal conditions for development, the scheme of irrigation and nutrient regime (ammonium nitrate, Solar universal) were developed. Experimental data on the growth of seedlings were processed by methods of mathematical processing. The standard of seedlings is determined in accordance with the Order of the Ministry of Natural Resources of Russia from 04.12.2020 № 1014.
 Results. The effectiveness of growing seedlings Quercus robur L. with closed and open root systems is shown. The characteristics of the substrate are given, the regime of mineral nutrition, as well as the regime of watering to maintain the optimum temperature and humidity of the air and substrate are developed. Analysis of the dynamics of biometric data of plants with closed root system showed that 92% reached the standard within 2 months, with open root system - 56% of seedlings at the end of the growing season.
 Conclusion. According to the indicators of quality, time and volume of production, the advantage of the technology of growing Q. robur L. with closed root system.

AGROECONOMIC ASSESSMENT OF THE INFLUENCE OF SOWING METHODS AND SOWING RATES OF SAFLORO DYE SEEDS IN THE VOLGOGRAD REGION

Background. Safflower belongs to the category of insurance oilseeds, it is able to grow and form a seed crop for vegetable oils in extremely arid conditions. The production of safflower seeds is associated with extreme conditions, and therefore it is necessary to clarify in the arid climate of the Volgograd region in the zone of light chestnut soils the optimal seed sowing rate and an effective method of sowing it.
 Purpose. To study and determine the methods of sowing safflower seeds and the optimal sowing rates in agricultural landscapes in the zone of light-chestnut soils, the dry steppe of the Nizhnevolzhsky region to obtain high-quality seeds.
 Materials and methods. A single-factor field experiment was laid in 2022, in the steppe zone with a hydrothermal coefficient of 0.6-0.4. On the site for obtaining seeds, safflower was sown according to its predecessor - black fallow. Since autumn, the main tillage was carried out - disking, in the spring, spring harrowing in two tracks, followed by pre-sowing cultivation. The cultivars of dyeing safflower Aleksandrit, Volgogradsky 15 were sown, the originator of which is the Federal Scientific Center of Agroecology of the Russian Academy of Sciences. The repetition in the experiment is threefold, the variants are continuous. All repetitions in the experiment are placed in one field. The area of the experimental plot is 180 m2. The weather conditions during the period of formation of the safflower crop are characterized as dry, HTC 0.6, and the reserve of productive moisture during the sowing period in the meter layer was 12.72 mm. placement of options is systematic, sequential, in blocks in one tier
 Results. The conducted studies made it possible to determine that the highest yield of safflower was obtained from the Alexandrite variety of 1.22 t/ha in sowing with row spacing, a width of 15 cm and a seeding rate of 30 kg/ha and a profitability of producing high-quality seeds of 238.9%.
 Conclusion. Under the conditions of light chestnut soils in the dry steppe of the Volgograd region, it is advisable to sow safflower between rows, the width of which is 15 cm, and the optimal seeding rate is 30 kg/ha, while the economic benefit of seed production will be up to 238.9%.

Assessment of the Role and Prospects for the Development of Regional Innovative Entrepreneurship (on the Example of the Volgograd Region)

Relevance. The development of innovative entrepreneurship is becoming increasingly important due to the increased level of competition in the markets of goods, works and services, the importance of solving the problems of maximum satisfaction of the needs of the population in high-quality goods and services. The success of solving these tasks depends on a number of factors, some of them act as barriers to the development of innovative entrepreneurship, some are necessary conditions. As for the first, it is important to develop measures to level and eliminate them, with regard to the second group of factors, it is important to create the conditions necessary for the fullest use of the potential of enterprises in this area.The purpose is to analyze and determine the impact and significance of regional innovative entrepreneurship, as well as to identify the prospects for the development of this sector in the Volgograd region.Objectives: to reveal the essence of the concept of "innovative entrepreneurship"; to give a forecast assessment of promising directions for the development of innovative entrepreneurship in the Volgograd region, including consideration of both the existing base and a set of measures aimed at supporting the development of this area in the region.Methodology. The method of theoretical analysis of the sources of the problem under study, the method of historical and logical analysis and assessment of the current situation, as well as the illustrative and graphic method are used.Results: the author's vision of the concept of "innovative entrepreneurship" is formulated; the key directions and measures to stimulate the development of innovative entrepreneurship in the region are identified; the main functions of the public authorities of the subjects of the Russian Federation for the development of innovative entrepreneurship in the regions are highlighted; the author's forecast assessment of the strategic prospects for the development of innovative entrepreneurship in the Volgograd region is presented; the most preferred directions for the development of innovative entrepreneurship in the Volgograd region, which require special attention from the regional public authorities, are formulated.Conclusion. The development of the Russian innovation potential is actively influenced by such factors as the state of the scientific and technical base of enterprises, sanctions restrictions, the system of state support measures.

Report in Documentary Communication in Southern Region of Russia during First Half of 18th Century

This article examines the report as a new type of document in the business writing system of the first half of the 18th century. The aim is to identify common and distinctive features of reports from various institutions in the southern region of Russia. The materials used for this study are documents from the Don Army (State Archive of the Volgograd Region) and the Astrakhan Province (National Archive of the Republic of Kalmykia). Through a comparative analysis of their content, functions, and speech organization, it is revealed that all reports were submitted from subordinate subjects to superiors, served informative purposes, and occasionally served as accompanying documents. They shared a similar form (addressee, addresser, title, main text, date, place of creation), although there were variations in the placement of requisites, document titles, and addresser formulas. Differences were also identified, such as the larger number of reports in the documentation of the Don Army and their frequent use as accompanying documents, while Astrakhan reports often contained financial reports. In Don reports, the addresser was referred to in the final formula as “about this report,” while Astrakhan reports only included their name (or signature). It can be concluded that reports were increasingly integrated into official communication, becoming firmly established in the military sphere, and their form became more standardized, reflecting the development of common rules for document management.

Текст мемуаров как выражение языковой личности автора (на примере воспоминаний И. Г. Тинина)

Based on the memoirs “Genesis. Exodus. Deuteronomy…” by I. G. Tinin, the research aims to characterise the author as a linguistic personality. The paper utilises the model of organisation and description of a linguistic personality proposed by Yu. N. Karaulov to examine the linguistic means that reveal the structural-linguistic, linguo-cognitive and pragmatic levels of I. G. Tinin’s personality. The research is novel in that it is the first to use the memoirs of a person who was born and formed in the environment of the Russian white émigré community, in the traditions of noble Russia, participated in World War II, lived in the post-war Soviet and post-Soviet country and was known in Volgograd and the Volgograd region as a cultural figure, educator as the research material. As a result, the researcher finds that the author masters the entire stylistic palette of the Russian literary language, he is familiar with non-literary forms of the common language and has knowledge of foreign languages. The use of stylistically marked forms, foreign expressions is determined by the speech situation, the author’s goals and objectives. The study highlights the author’s interest in and attention to language, the use of its expressive resources, the utilisation of stylistic devices, word play, a variety of precedent names that are significant for Russian and world culture, which indicates the author’s broad outlook, his system of views and a complex and rich worldview. The important values of the memoirist are identified, including respect for people, reverence for ancestors, love for one’s family and homeland, the desire to soften negative emotions and evaluations with subtle humour and an orientation towards the interlocutor.

Study of Non-Carcinogenic Risk to Public Health from Oral Consumption of Substandard Groundwater in the Nizhnevolzhsky Basin

The analysis of non-carcinogenic health risks associated with oral intake of toxicants is a relevant approach for the identification of endemic ecologically dependent diseases. It is based on the assessment of chronic exposure to various chemicals having a unidirectional mechanism of toxic effect. Main goal of the study is the sanitary and environmental assessment of drinking water from underground water supply sources of the Nizhnevolzhsky basin of the Volgograd region based on a step-by-step procedure for public health risk assessing. Study area GIS-data analysis was performed at the stage of hazard detection step (selection of a list of priority pollutants); a laboratory analysis of the chemical composition of water was carried out; the calculation of the dose of toxicants entering the body with drinking water was performed. For the first time for the territory of the Volgograd region, we calculated non-carcinogenic risks associated with oral intake of toxicants, revealed critical system and organs, mostly susceptible for the development of non-carcinogenic phenomena. An analysis of the literary sources devoted to the problems of the formation of substandard groundwater for drinking purposes and the health risks associated with this phenomenon was carried out according to the list of priority pollutants determined in the current study. It is possible to use the results of the study to adjust measures in the organization of water treatment and procedures for improving the social and hygienic monitoring of the health of water users of the Nizhnevolzhsky underground basin.

Satellite images interpretation for health studies of urban areas

Every year a variety of vector-borne infectious diseases claims the lives of millions of people worldwide. The study of the favorable conditions for their vectors and hosts is a particularly important task for understanding the patterns of the distribution with the focus on the urban environment, characterizing by a high population density and rapid transmission of the diseases. The existing methodology of Local Climate Zones (LCZ), which are areas with homogeneous land surface coverage, structure, and a specific nature of human activity was the first attempt to standardize urban environmental studies and has become an international standard for the analysis of urban morphology. The article provides an algorithm for adapting the methodology of identifying LCZ accounting vegetation and water areas for the tasks of medical geographical zoning and assessment of epidemiological risks and using the geographic information technology. The examples of the outbreaks of vivax malaria in the Moscow region in 1999–2003 and West Nile fever in the Volgograd region in 2010–2011 were used. As a result, a methodology of medical geographical zoning based on the idea of fragmenting the classification of LCZ using the normalized difference water index as indicator of the favorability for vector habitats was developed. The use of the methodology made it possible to reveal that the areas of various LCZs change after outbreaks, which may reflect changes in conditions and an increase in the favorability for vectors. Thus, LCZ can be used as indicators of changes in the natural and man-made environment that can provoke disease outbreaks.

Устойчивое социально-экономическое развитие регионов Южного федерального округа в условиях внешних санкций

In recent years Russia has been going through drastic changes in the structure of socio-economic processes due to the external sanctions introduction. Under modern conditions is it important to find out whether the imposed sanctions have affected the development of the country’s regions and what development prospects should be expected in the future. The changes in the nature of the socio-economic development of the regions of the Southern Federal District, namely the Krasnodar Territory, Volgograd and Rostov regions, caused by sanctions, are investigated; measures to promote regional development in the conditions of external sanctions are proposed. In the context of global economic changes and political constraints that have had an impact on the country᾿s macroeconomic situation, regional development is of particular importance. The regions of the Southern Federal District are facing a number of complex problems, including a decrease in the external investment flow, limited access to international markets, an imbalance in the economic structure, as well as the deterioration of social indicators, which together create challenges for achieving sustainable socio-economic development. A statistical analysis of the socio-economic situation of the Krasnodar Territory, Volgograd, Rostov regions in dynamics is carried out. Possible consequences of sanctions are considered. The main socio-economic indicators of the three regions of the Southern Federal District are analyzed, as a result of which it is possible to assess their condition and further development prospects in the conditions of sanctions. It is concluded that in order to overcome the consequences of sanctions, it is necessary to introduce integrated approaches. Important strategic steps are economic diversification, stimulating innovation and research, supporting small and medium-sized businesses, as well as strengthening interregional partnerships. It is recommended to focus on human capital development providing access to education, health care and high-quality employment.

Государственная поддержка сельского хозяйства Волгоградской области: возможности финансово-кредитной инфраструктуры

The purpose of this article is to analyze the government support of agriculture in the Volgograd region, the basis of which is the financial and credit infrastructure. The changes in the Russian economy (pandemic of COVID-19, digitalization, high volatility in global markets, increased sanctions pressure) not only create barriers to the activities of agricultural producers but also open new opportunities for improvement. In the article, attention is paid to the study of economic research on the conceptual apparatus of government support for agriculture. The conclusion is drawn about its immature character because of the constant response of scientists to current events in the economy, which manifests itself in the emergence of new approaches to the definition and the permanent modification of existing ones. The variability of definitions of “government support of agriculture” presented in the study made it possible to concretize the goals that lead to the need for government support of agriculture and the set of ways to achieve them. It should be recognized that the industry has fairly low financial autonomy. The presence of financial resources (credit resources) is the basis of the activities of agricultural producers. The source of such resources is the financial and credit infrastructure of agriculture. Despite serious challenges, the industry has demonstrated stable results, and the main principle in the coming years should be the consolidation of this trend. Key directions for agricultural development in the region will continue to be the imperatives of government support and the new isolation of economic and political activity in the country. The financial and credit infrastructure of agriculture is expected to respond timely to such changes and adjustments as to the reliability and availability of financial and credit resources for businessmen in agriculture.

Государственная поддержка субъектов малого и среднего предпринимательства региона в условиях пандемии и санкционного давления

In the current social and economic conditions, the role of small and medium-sized businesses in the effective development of Russia and its regions is only increasing. The economic sector of small and medium-sized businesses is the system that creates a competitive environment. Its development contributes to the economic, social, and political stability of society and the state. The COVID-19 pandemic, as well as subsequent sanctions, had a significant negative impact on small and medium-sized businesses, which especially needed state support during the crisis. The purpose of the article is to analyze measures to support small and medium-sized enterprises in the face of sanctions pressure. In the context of the sanctions and pandemic, ways to support enterprises were represented by the introduction of parallel imports of goods, the simplification of settlements with foreign partners, and the provision of the opportunity not to pay for patents to foreign counterparties. However, in the region, there is negative information about both the number of small enterprises and the number of people employed in them. The reasons were the general economic situation, lack of financial support, informal employment, low effective demand, low investment activity of businesses, the search for personnel for the production process, and the lack of information about government support measures. Measures to improve the situation in the field of small and medium-sized businesses in the Volgograd region are proposed as follows: reduction of administrative barriers; improvement of the taxation system; attraction of small businesses to purchase for government needs; direct financing of their activities; affordable support system; increase of the number of free information and consulting centers; and improvement of legislation in the field of support for small and medium-sized enterprises.

Инфраструктурный потенциал туристских дестинаций Волгоградской области

The purpose of this article is to assess the infrastructural potential of tourist destinations, i.e., localized types of tourism, in the Volgograd region. In general terms, the infrastructural potential of tourist destinations is understood as a set of conditions for the transfer and accommodation of tourists. The methodological basis is an integrated approach to the concept of “infrastructural potential,” comparative geographic analysis, geoinformational modeling, and cartographic modeling. The integrated character of the paper is manifested in the identification of components of infrastructure potential, such as territorial factors, the potential of the population, the provision of collective accommodation facilities, and the state of transport infrastructure, the analysis of which is based on official statistics for the period 2002–2022. The territorial units for studying the infrastructure potential are the administrative districts of the Volgograd region; thus, comparative and geographical principles are used. To identify the spatial features of the development of tourism infrastructure using geographic information systems, the cartograms were constructed and analyzed, which illustrate the location of tourist and recreational enterprises and the tourist and recreational attractiveness of administrative districts of the region. The methods and statistical data used made it possible to reveal the uneven development of the tourist infrastructure. The districts of the Volgograd region were ranked according to the degree of tourist attractiveness: low one had 20 districts, medium one had 12 districts, high one had 1 district (Sredneakhtubinsky), and the city of Volgograd had the highest attractiveness. In spatial terms, the main axis of the development of tourist infrastructure was identified, including 7 administrative districts located along the right bank of the Volga and confined to the Volga-Aktuba flood plain; some border areas, Kotelnikovsky, Uryupinsky, Serafimovichsky, and Pallasovsky, have an medium tourist attractiveness. The majority of the districts in the center of the region and the left bank of the Volga have a low tourist and recreational attractiveness. A component-by-component analysis and a capacity assessment of the potential of tourist destinations, especially in the context of administrative regions, make it possible to identify the leading factors in the territorial development of the tourism and recreational spheres and to develop tourism and recreational systems in the future.

Метод построения кадастровых карт затопления речных долин на основе гидродинамического и геоинформационного моделирования

The method of creating cadastral maps for flood areas with special conditions of use based on geoinformation and hydrodynamic modeling is described. This approach is used primarily for settlements located in river valleys. The hardware and software complex “EcoGIS-2D-Simulation” is used to conduct simulation experiments to study the dynamics of surface waters in a specific area in the vicinity of a river system. The computational module uses the Combined Smooth Particle Hydrodynamics — Total Variation Diminishing numerical algorithm for parallel integration of shallow water equations on GPUs with CUDA technology. The module for building a digital model of hydrological landscapes is an important component. This module includes a digital elevation model and sets of parameters that determine the hydrological resistance to river flow. The boundaries of the flood areas for some settlements of the Volgograd region at different values of flood probability are constructed.

Мучнистая роса дуба в защитных лесных насаждениях Волгоградской области

In the conditions of the Volgograd region, the source of infection of oak with powdery mildew (the causative agent is Erysiphe alphitoides (Griffon et Maubl.) U. Braun et S. Takam.) is the conidial and marsupial stages of the fungus – ascospores, which overwinter in fruit bodies (cleistothecium) almost within the entire range of the host. The development of the disease on the leaves of the shoots of the first growth depends on the phenological features of the oak and the weather conditions of the first growing season. When studying the regularities of oak phenology and the manifestations of the disease, systematic observations were carried out during the growing season in stands of pedunculate oak (Quercus robur L.) with a periodicity of 10 days. The phenology of oak was studied on 100 specimens of plants in protective forest stands on the territory adjacent to the city of Volgograd. At the same time, the development of powdery mildew of leaves was recorded, and conidium was captured using slides, with the help of agar-strips applied to them. The intensity of spore formation during the growth of the fungus was determined using the Goryaev counting chamber by the number of spores in a certain volume of suspension. Weather conditions for phenological observations were recorded using meteorological data for the period of studying the dynamics of the summer of powdery mildew-conidia and taken from the site “Pogoda i klimat”. It has been established that the seasonal development of conidia Erysiphe alphitoides is determined by a combination of the thermal regime and the conditions of humidification of the growing season. With the help of regression analysis for oak plantations in the arid zone of the Volgograd region, a prognostic model of a short-term meteorological and biological forecast of powdery mildew was developed, which made it possible to establish the dates of the disease and the terms of plant treatment through the dynamics of the spread of conidia.

Биоэкологическая характеристика уникальных природных и искусственных популяций дуба на полупустынных ландшафтах Волгоградской области

Биоэкологическая характеристика уникальных природных и искусственных популяций дуба на полупустынных ландшафтах Волгоградской области

The Construction of the First Volga-Don Canal of Peter the Great

This article studies the history behind the construction of a navigable canal meant to connect the Volga and the Don through their tributaries, the Kamyshinka and the Ilovlya, in 1697–1698. The authors aim to clarify the history of the first project of Peter the Great to modernise the country’s transport infrastructure and analyse it in the context of the events of the initial stage of the Petrine era. The study refers to maps and plans of the area, materials of office work – documents that both have been previously published and are introduced into scholarly circulation for the first time and come from the funds of the Russian State Archive of Ancient Acts, as well as the results of archaeological exploration carried out at the Selimov Val cultural heritage site in the village of Petrov Val in Kamyshin district of Volgograd Region. The study demonstrates that the period of 1697–1698 saw the construction of a structure meant to perform both fortification and hydraulic functions in the interfluve of the Kamyshinka and the Ilovlya. B. A. Golitsyn and E. I. Ukraintsоv controlled the construction, while Prince A. F. Shakhovsky directly supervised it. The project was authored by engineer J. Bröckell, and Peter I attached great importance to it, repeatedly discussing it with European statesmen and scientists during the Great Embassy. Pososhniye lyudi (people in sokha-based military service) were recruited in the settlements and districts of the Volga cities and did the construction work on the Kamyshinka. Logging was carried out along the River Sura in Alatorsky and Yadrinsky uyezds. By the end of 1697, a fortification was built where the Kamyshinka and the Ilovlya were closest to each other, the remains of the fortification perfectly preserved to this day. However, it turned out impossible to build a navigable canal. Having received news of the departure of J. Bröckell, the author of the first project, from the country in the winter of 1698, Peter I and other members of the Great Embassy began to look for and invite “sluice masters”, i. e. specialists in the construction of navigable canals. Thus, the first unsuccessful attempt to connect the Volga and the Don was why the tsar paid close attention to the theoretical and practical issues of building navigable canals as a significant area of science and technology.

Опыт использования беспилотных летательных аппаратов для выявления мест размещения отходов в водоохранных зонах

Disposal of industrial and consumer waste in water protection zones of water bodies is a violation of water legislation of the Russian Federation. The use of materials obtained with the help of unmanned aerial vehicles (UAVs) significantly expands the possibilities for determining stored waste. UAVs are used for prompt identification of unauthorized waste disposal sites within the boundaries of the water protection zones of the Tsimlyansk reservoir. The paper presents the possibilities of using orthophotoplans and photo materials obtained during field surveys carried out by the Russian Research Institute for the Integrated Use and Protection of Water Resources in 2019-2021. According to the research results, the largest accumulation of solid household waste is localized in the water protection zone of large cities and villages. The largest amount of waste stored in the water protection zone is located in the Dubovsky and Tsimplansk districts of the Rostov region, as well as in the Kalachyovsky district of the Volgograd region. Dumping sites detected with the help of UAVs based on the composition of the predominant waste were divided into five groups: solid household waste, construction waste, organic waste, metal, and waste of unknown composition. Up to 42 % of landfill waste in the water protection zone of the reservoir is solid domestic waste, at least 25 % of landfill sites are construction waste and 20 % are organ waste.

Актуальность декарбонизации деятельности промышленных предприятий на территории Волгоградской области

The article presents the influence analysis of industrial enterprises of the Volgograd region on thestate of atmospheric air in the region. The importance of solving the problem of greenhouse gas emissions into the atmosphere at the international level has been analyzed. Foreign experience in terms of reducing carbon dioxide emissions of industrial enterprises is considered. A method to reduce the environmental burden on atmospheric air by decarbonization, i.e. сarbon capture and storage of CO2 in deep geological objects is proposed.

Comparative demonstration trials of winter wheat varieties of the ARC “Donskoy” in the zone of blackearth soils of the Volgograd region

The current paper has considered the results of comparative trials of winter wheat varieties of the ARC “Donskoy” in the zone of blackearth soils, the subzone of southern blackearth of the Volgograd region. Modern breeding provides a wide choice of winter wheat varieties. In the Volgograd region, more than 100 varieties are sown annually. This objectively results in difficulty of the best choice. Based on the official data on the preferences of farmers, there have been optimized the selection base, focusing on the varieties of the ARC “Donskoy”, considering it more important and responsible for farmers to clarify information about this significant (about 60 %) block. The field trial was laid in the Kikvidzensky district of the Volgograd region in the zone of blackearth soils, the subzone of southern blackearth, on the lands of “AGROPRODUKT” LLC. The study was carried out according to the methodology used by the State Variety Commission. Significant effect on the autumn stage of development was made by weather conditions, which were significantly contrasting, during the years of trial. The value of field germination was at the level of 65–75 %. The indicators of autumn tillering at the end of the autumn vegetation period for three years were in a rather narrow range of 3.9–4.7 pcs/plant. In the studied area, the formation of yield due to the density of productive stems prevailed. On average, for three years, the value of the productive stalk was 610–729 pieces/m2. According to this indicator, the winter wheat varieties ‘Krasa Dona’, ‘Donskaya Step’, ‘Kapitan’ (679–729 pcs/m2) were the best ones. As a result, the best productivity indicators were demontarted by the varieties ‘Krasa Dona’ (5.66 t/ha) and ‘Donskaya Step’ (5.41 t/ha). A significant group of varieties, such as ‘Kapitan’, ‘Lidiya’, ‘Asket’, ‘Zhavoronok’, formed 5.21– 5.26 t/ha.

Selection of Cultivar-rootstock Combinations of Diploid Plum (Prunus rossica Erem.) for Arid Conditions in Southern Russia

Background: Plum diploid is a new species for the conditions of the Volgograd region of Russia, not previously grown. There are a large number of varieties and rootstocks that need to be studied in relation to new growing conditions. Methods: The research was carried out in 2020-2022. Drought resistance and heat resistance were determined by laboratory method. To account for these indicators, the water content of the leaf, the water deficit and the water-holding capacity of the leaves were determined. Productivity and fruit quality were determined by the weight method. Statistical analysis in the standard Microsoft Excel 2013 software package. Result: The study of the productivity of variety-rootstock combinations has shown that it is significantly influenced by, in addition to varietal characteristics, external environmental factors, also the rootstock on which the variety is grafted. The rootstock affects the strength of growth, the time of entry into fruiting, the quality characteristics of fruits, which significantly affects productivity. The highest productivity was observed in the Sarmatka variety on the VVA-1 rootstock (21.5 kg/tree), the smallest was the Kuban Comet on the cherry plum rootstock (10 kg/tree).

Spatio-temporal dynamics of land use transitions associated with human activities over Eurasian Steppe: Evidence from improved residual analysis

We presented a framework to evaluate the land use transformations over the Eurasian Steppe (EUS) driven by human activities from 2000 to 2020. Framework involves three main components: (1) evaluate the spatial-temporal dynamics of land use transitions by utilizing the land change modeler (LCM) and remote sensing data; (2) quantifying the individual contributions of climate change and human activities using improved residual trend analysis (IRTA) and pixel-based partial correlation coefficient (PCC); and (3) quantifying the contributions of land use transitions to Leaf Area Index Intensity (LAII) by using the linear regression. Research findings indicate an increase in cropland (+1.17 % = 104,217 km2) over EUS, while a − 0.80 % reduction over Uzbekistan and − 0.16 % over Tajikistan. From 2000 to 2020 a slight increase in grassland was observed over the EUS region by 0.05 %. The detailed findings confirm an increase (0.24 % = 21,248.62 km2) of grassland over the 1st half (2000−2010) and a decrease (−0.19 % = −16,490.50 km2) in the 2nd period (2011−2020), with a notable decline over Kazakhstan (−0.54 % = 13,690 km2), Tajikistan (−0.18 % = 1483 km2), and Volgograd (−0.79 % = 4346 km2). Area of surface water bodies has declined with an alarming rate over Kazakhstan (−0.40 % = 10,261 km2) and Uzbekistan (−2.22 % = 8943 km2). Additionally, dominant contributions of human activities to induced LULC transitions were observed over the Chinese region, Mongolia, Uzbekistan, and Volgograd regions, with approximately 87 %, 83 %, 92 %, and 47 %, respectively, causing effective transitions to 12,997 km2 of cropland, 24,645 km2 of grassland, 16,763 km2 of sparse vegetation in China, and 12,731.2 km2 to grassland and 15,356.1 km2 to sparse vegetation in Mongolia. Kazakhstan had mixed climate-human impact with human-driven transitions of 48,568 km2 of bare land to sparse vegetation, 27,741 km2 to grassland, and 49,789 km2 to cropland on the eastern sides. Southern regions near Uzbekistan had climatic dominancy, and 8472 km2 of water bodies turned into bare soil. LAII shows an increasing trend rate of 0.63 year−1, particularly over human-dominant regions. This study can guide knowledge of oscillations and reduce adverse impacts on ecosystems and their supply services.