Geography

The urban settlement pattern on the banks of some rivers in Europe: Search for inter-city interval

Authors: Preobrazhenskiy Y. V.

The study continues to identify the typical interval between cities on major rivers in the search for patterns in the organization of geospatial elements, including point (cities) and linear (rivers) objects. It is stated that the latter are divided into approximately equal segments measured by the river (inter-city intervals). This article examines the features of urban population distribution along the banks of six major rivers in Europe. Typical inter-city intervals were identified for them.

On the manifestations of climate change in the wind regime in the territory of Syunik marz (Armenia)

Authors: Margaryan V. G., Avetisyan G. D., Khachatryan G. A., Margaryan P. N.

The manifestations of climate change in the regularities of the wind regime in the territory of Syunik marz of Armenia are considered. Monthly wind data for the period 1966–2018 of six weather stations were used as a source material. It was found that at all meteostations, except for Kapan, currently operating in the territory of Syunik marz there is a tendency towards a decrease in wind speed for 1966–2018. The number of cases of wind directions and calmness also fluctuates, due to climate changes, which are presented in the work on the example of the Goris weather station.

Facies structure of the chalk natural landmark of the nature monument “Chalk slopes with calcephil plants near town Volsk”

Authors: Makarov V. Z., Volkov Y. V., Arhipova E. A., Nevryuev A. M., Melnikova E. S.

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.

Assessment of technogenic load of Nizhny Tagil city pond and environmental risk management based on multifractal dynamics

Authors: Kulnev V. V., Nasonov A. N., Tsvetkov I. V., Mezhova L. A.

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 Content of Mobile Forms of Heavy Metals in Soils in the Territory of the Recreation Zone «Victory Park» (Saratov)

Authors: Sheshnev A. S., Eremin V. N., Reshetnikov M. V., Teslinova O. V.

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.

Evaluating the Degree of Favourable Overwintering of Winter Crops on the Territory of the Saratov Region

Authors: Pryakhina S. I., Ormeli E. I.

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.

Pollution of the Territory of the Pribaikalsky National Park by Emissions from Forest Fires

Authors: Novikova S. A., Shcherbakova I. V.

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.

Features of the Transboundary Rivers of Central Asia (on the Example of Kyrgyzstan)

Authors: Donbaeva G. Ч.

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.

Estimation of Impulse Response of Earth’s Climate System at Century Time Interval

Authors: Bogdanov M. B., Chervyakov M. Y.

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 Development of an Algorithm for Constructing the Flood Zones Using Geoinformation Technologies (on the Example of the Medveditsa River Section Near Petrovsk)

Authors: Shlapak P. A., Morozova V. A., Morozova E. A.

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.

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