The article presents a forecast of grain quality of spring wheat, obtained on the basis of the correlation of grain protein content with the average monthly air temperature in June. The correlation coefficient of the found dependence was 0.75, the equation justification was 94%. The statistical significance of the model is confirmed using Student’s criterion, the analysis of residual deviations and using the Kolmogorov-Smirnov criterion.
The article discusses the creation of a comfortable urban environment in the central part of the city of Saratov. The data on reducing the area of green spaces, the results of the assessment of air pollution from vehicles against the backdrop of an unfavorable terrain are presented. It is established that the indicators of complex environmental pollution of the pedestrian zone of Rakhov Street have a tendency to increase after its reconstruction.
This article considers the methodology for constructing a digital elevation model and its derivatives for analyzing the spatial distribution of linear erosion processes using the territory of the Khvalynsky district as an example. The authors propose the creation of a refined terrain model based on SRTM radar data, topographic maps and the interpretation of Earth remote sensing data. The creation technology is described and a comparative analysis of the refined model with the base SRTM is carried out.
The history of the study of the southwestern part of the Crimean coast between cape Aya and сape Sarych was considered. The conditions determining the development of exogenous geological processes on the coasts studied were characterized. They are: the type of coast, the tectonic construction and the direction of tectonic movements, maritime relief, lithological composition of the coasts. Genesis, morphometric characteristics, granulometric and material composition of the beaches forming here are described.
The article is devoted to the modern economic and geographical development of one of the main industrial and agricultural subregions of the Irkutsk region, which transformed in the time dynamics from a large Soviet, post-Soviet industrial city of regional subordination into the modern Angarsk urban district (hereinafter AGO). The AGO structure is a «modular designer» from the city of Angarsk and the non-urban areas (the settlement of Meget, village Savateevka and Odinsk and 11 small settlements).
The development of urban agglomerations is connected with the solution of the issues of territorial zones allocation and ensuring their transport accessibility. The purpose of the article is to determine the theoretical and methodological foundations of this subject. A review of foreign studies on the topic of extra-street passenger transport is conducted. The terminology used in foreign literature is defined. On the example of urban metropolitan areas of the USA, the development of public transport and the position of researchers on this issue are considered.
The article raises the question of complementarity of economic structures of a number of the Volga and Ural regions within the supraregional formation, which can be the Volga economic region or the Volga-Ural macro-region. The degree of changes in the structure of the manufacturing industry of the Volga regions over the decade is estimated, including taking into account the dynamics of the production of innovative products.
The article discusses the trends of educational migration to Russia, including the geography of migrants’ origin. The main stream of educational migrants comes from neighboring countries. To smooth out the country’s demographic problems, educational migrants are the best migrants. These are highly qualified young people who have undergone adaptation and integration during their studies. The country needs to break the stereotype of migrants from Central Asia only as low-skilled workers.
The paper is devoted to suggested semi-empirical method for determination of air relative humidity based on results of measurements of precipitated water vapors using sun photometers. The analysis of known Butler method make it possible to predict the presence of extremes in functional dependence of precipitated water vapors on relative humidity on the earth surface.
The article provides a comprehensive assessment of the location of social services facilities in the context of municipal regions of the Baikal region. Based on the results obtained, a grouping of territories was compiled according to the degree of provision with complex centers, boarding houses and home-based services. It was revealed that the main factors in the organization of social infrastructure facilities are the geographical location, the high concentration of the population in the main resettlement zone and the high level of urbanization.
The article provides finding the optimal method for crop detection by high resolution satellite imagery (using the Landsat 8 and Sentinel 2 shooting systems as an example), examines the advantages and disadvantages of existing algorithms and recording systems and selects the optimal method. The result of the study is the application of the optimal algorithm for crop detection and its verification on arable lands of the Saratov Volga region.
The rural population of Saratov region is rapidly declining. This is due to the negative natural growth, and a significant migratory outflow. These factors lead to population aging. The proportion of people over 60 in the entire population of rural areas is growing. The demographic burden on the working-age population is increasing, and the aging index is increasing. The aging of population is largely due to a significant migration outflow of young people from the region. This is a specificity of the region.
The article discusses aspects of developing an algorithm for flood zones modeling using modern geographic information technologies in the area of the river near the town Petrovsk. The integrated approach to the flood zones modeling of different hydrological magnitude is considered. As a result of the developed algorithm application, flood risk areas with different probabilities (1, 5, 25 and 50%) with an indication of the depth of flooding are identified.
The Earth’s climate system (ECS) is considered as a linear system whose input is the change in the solar constant, and whose output is the global mean near-surface temperature anomaly. As a result of the restoration of the impulse response at century time interval using reconstructed data on the solar constant and global temperature it was shown that its time constant is 32 ± 14 years. The sensitivity of the ECS to radiative forcing is 1.31 ± 0.63 K·W-1·m2, and the positive feedback coefficient is 4.4 ± 2.1.
The article describes the current situation of water resources in Central Asia (on the example of Kyrgyzstan) which recently caused a number of national and international meetings, consultations, and conflicts. The issue becomes even more acute when they are of a transboundary nature. In this regard, it is necessary to implement an integrated approach in the management of water and energy resources of transboundary rivers.
The aim of the work is to assess the contribution of emissions from forest fires to air pollution using the example of the territory of the Pribaikalsky National park. To achieve this goal, calculations of gross emissions were carried out based on forestry data on fires. With the help of the program complex «Ecologist» calculations of concentrations of impurities emitted into the atmosphere during forest fires were carried out. Based on the results of the calculations, maps of the concentrations of pollutants released into the atmosphere from fires were created.
The article presents the agroclimatic characteristic of the winter season on daily meteorological weather data for 1941–2019 at the Saratov South-East (SE) station. The agroclimatic characteristic of the winter season at the stations of the Saratov region (Khvalynsk, Balashov, Ershov, Alexandrov Gai) is presented for the last 10 years. The point rating of the degree of favorable overwintering of winter crops was carried out at the Saratov SE station for 1962–2019.
The soil cover in the territory of the large recreational zone «Victory Park», which performs environmental, memorial and educational functions, was studied. According to the analysis results of mobile forms of heavy metals concentrations the assessment of the current sanitaryhygienic and ecologic-geochemical condition of soils was carried out. An excess of the maximum permissible concentrations in most of the samples for nickel, lead, and copper was found.
Algoremediation which is a method of natural and waste water treatment due to the metabolic potential of chlorococcal microalgae is based on the principle of system stability. The method of pollution degree estimation of anthropogenic loaded water object based on the application of fractal calculation is shown. Factor analysis has been used to determine the parameters of the environmental system of Nizhny Tagil city pond which are the basis for a new approach to evaluating the efficiency of environmental protection measures through geoecological risk management.
The article presents the results of landscape-ecological studies of the site of the natural monument “Chalk slopes with calcephil plants near town Volsk” in the Saratov region. For the first time, the facies rows of the chalk buttes of the Volsky Pre-Volga region are identified, their characteristics are presented, and the conservational risks to calciphytic diversity are indicated.