Influence Of Anthropogenic Factors Research Articles

Quantification of the Escalating Influence of Anthropogenic Factors in Suspended-Sediment Concentration Regimes

Quantification of the Escalating Influence of Anthropogenic Factors in Suspended-Sediment Concentration Regimes

СВЯЗИ МЕЖГОДОВЫХ ВАРИАЦИЙ СРЕДНЕМЕСЯЧНЫХ УРОВНЕЙ КАСПИЯ, А ТАКЖЕ СУММ АТМОСФЕРНЫХ ОСАДКОВ В ЕГО БАССЕЙНЕ И ИХ ИЗМЕНЕНИЯ ПРИ СОВРЕМЕННОМ ПОТЕПЛЕНИИ КЛИМАТА

In the modern period, the level of the Caspian Sea water surface is rapidly decreasing, which creates significant problems for the population and economy of all countries of the Caspian region. Therefore, improvement of the methods for forecasting its further changes is an urgent problem of hydrology, meteorology and ecology. It is generally accepted that the main reasons for the current decline in the Caspian Sea level are the influence of anthropogenic factors and climatic changes on the dynamics of its water balance components. A significant component of the incoming part of this balance is the amount of precipitation falling in the territory of the Caspian basin. One of the methods used for forecasting the Caspian Sea level is multiple regression analysis. The validity of the forecasts obtained with its help depends on the significance of the relationships between the studied process in the future and the factors monitored in the present and in the past that are taken into account in their development. The article assesses the significance of statistical correlations between interannual variations in the average monthly background levels of the Caspian Sea and the dynamics of precipitation amounts in its basin, as well as its changes during the period of modern climate warming. The ERA 5 reanalysis information was used as factual material on precipitation. Information on the levels was obtained from literary sources. It was found that in the period of 1979-2021 the conclusion on the significance of the relationships under consideration was characterized by the reliability of at least 0.95 only if the changes in precipitation amounts corresponded to May. As the time shift between the analyzed process and this factor increases from 0 to 36 months, their correlation remains positive and significant, but slightly weakens. During the period of modern climate warming, the revealed correlation also became weaker, which allows us to doubt its significance even in the near future. There were also identified the Caspian basin areas for which, on the contrary, the considered relationship strengthened during the same period. It implies that the probability of the scenario in which they remain significant in the future is higher than that of other scenarios. Therefore, it is reasonable to take the identified relationships into account when forecasting changes in the average level of the Caspian Sea.

ТҮРКІСТАН ОБЛЫСЫНЫҢ ЛАНДШАФТТАРЫНЫҢ ТОПЫРАҚ ЖАМЫЛҒЫСЫ АНТРОПОГЕНДІК ФАКТОРЛАРДЫҢ ӘСЕРІ САЛДАРЫНАН ЛАСТАНУЫ

Turkestan region is located in the south of Kazakhstan and is one of the industrially and agri-culturally developed regions of the republic. As the intensity of nature management in Turkestan region increases, pollution occurs under the influence of anthropogenic factors. Taking into account anthropogenic factors, the composition of chemical elements of the soil cover in genetic layers was studied in typical natural areas of the landscape system; and soil sections were made to determine the composition. The concentrations of chemical elements (C, O, Na, Mg, Al, Si, K, Ca, Ti, Fe, Pb, As, Cu, Zn, Ni, Co, V, Tl, Mn, and Sr) were analyzed based on the results of the analysis of samples from soil sections. The amount of chemical elements of the soil cover was determined using the Spectroscan MAX GF-2E device. The obtained data were statistically processed using the Microsoft Excel program. Chemical analysis of the soil cover (Pb, Cu, Zn, As, and Cr) showed that the chemical elements exceed the maximum allowable concentration. The results of the study are the basis for developing recommendations for solving problems related to the pollution of landscapes due to the impact of anthropogenic factors on the soil cover.

Cytome analysis (micronuclei and nuclear anomalies) in bioindication of environmental pollution in animals with nuclear erythrocytes

Assessment of cytogenetic homeostasis of indicator animals is of great importance in ecological monitoring. The simplest method of its study is micronucleus analysis. Animals with nuclear erythrocytes are often used as indicator animals. In addition to the micronuclei usually recorded, a wide range of cytological nuclear and cellular abnormalities (cytomic analysis) is encountered when assessing the spontaneous level and under the influence of anthropogenic factors. Spontaneous frequency of cytogenetic disorders in 36 species of fish, amphibians, reptiles and birds was studied. Ecological monitoring of territories of Kazakhstan with different types of pollution (radiation, petrochemical, pesticide, heavy metals, due to rocket and space activities) was carried out with the help of separate species of animals. The results of the study include comparative descriptions, schematics and microphotographs clearly demonstrating a wide range of cytological anomalies of nuclear erythrocytes of animals of different classes. The greatest spectrum of nuclear anomalies in the studied animals was registered at petrochemical and pesticide contamination of territories. Depending on the tasks and climatic-geographical conditions, all investigated species can be used as bioindicators. Testudo horsfieldii is an exception for desert regions due to high spontaneous micronuclei level in this species. A review of the names of the main nuclear anomalies is carried out and variants of its ordering are proposed.

Monitoring of Channel Deformations of the Lower Dniester Using Topographic Maps and Satellite Imagery with the Implementation of GIS Technologies

Rivers are one of the most complex formations on the Earth’s surface; they are connected with the deep structure of the Earth, the landscape environment, and unpredictable weather cataclysms. The study aims to investigate the peculiarities of the geological structure and tectonics of the Lower Dniester region, examine the types of meanders, determine the horizontal displacements of the riverbed, and assess the impact of anthropogenic factors on the riverbed and riparian areas. The methodology is based on the use of tectonic maps, geological maps of Quaternary deposits, historical topographic maps, and satellite images to determine the long-term horizontal displacements of the riverbed, identify meander types, and study the meandering characteristics and their relationships with tectonic structures. Horizontal riverbed displacements were measured at 76 points using data from the 1980 map and a Sentinel-2 image obtained in 2020. For the purpose of studying the types of meanders and their analysis, it is proposed to use the characteristics of meanders and their relationships. This approach will allow for more efficient analysis and prediction of changes in channel processes under the influence of natural and anthropogenic factors across various temporal scales. The research shows that the Lower Dniester region is influenced by the tectonics of internal structures and the seismically active Vrancea zone in Romania. Additionally, a comparison of cartographic data from 1880 and 1980 and satellite images from 2020 allows us to assess how the territory of the Lower Dniester riparian area has changed under the influence of anthropogenic factors.

Сравнительный анализ эколого-флористической классификации и лесных типологий России

At the beginning of the 20th century in Europe, a scientific direction was formed, called phytosociology, the founder of which was the Swiss botanist and ecologist J. Braun- Blanquet. The approach he developed has become widespread throughout the world and has formed the basis for a large number of vegetation classifications. The article provides a description of the ecological-floristic approach to vegetation classification according to the following parameters: the scope of the concept of association, the peculiarities of its boundary allocation, the classification criteria for establishing the type of forest conditions and for determining the association, consideration of the succession dynamics and the influence of anthropogenic factors, the level of implementation in forestry, forest management and reporting. An overview of the current state of the approach is given and the results of its comparison to the Russian forest typologies are presented. The advantages of the Braun-Blanquet classification include its versatility, developed methodology, flexibility of classification criteria and a carefully thought-out nomenclature. The development of the Turboveg software package for entering, storing and processing vegetation data has contributed to the increase in the use of this classification. Currently, in addition to vegetation features, it is becoming mandatory to take into account climatic parameters, and when identifying syntaxa and forming cartographic representations of vegetation, modern advances in the field of GIS technologies are used to assess the factors that influence the vegetation structure. The reflection of successional dynamics in syntaxonomic units still remains an urgent task for both the ecological-floristic approach and the domestic forest typologies. Within the framework of the Braun-Blanquet approach, aspects related to the consideration of anthropogenic transformations of plant associations are also being actively studied. This is evidenced by a number of successful examples of assessing forest synanthropization and modeling the response functions of plant communities to environmental factors, including anthropogenic ones. As in forest typologies, multidimensional methods of data analysis (DCA, CCA, PCA with superimposition of vectors on ordination diagrams) are widely used in the development of eclological-floristic classifications for studying the structure of forest vegetation.

Quantitative Effects of Anthropogenic and Natural Factors on Heavy Metals Pollution and Spatial Distribution in Surface Drinking Water Sources in the Upper Huaihe River Basin in China.

The water quality of sources in the Huaihe River Basin significantly affects the lives and health of approximately 16.7% of China's population. Identifying and quantifying pollution sources and risks is essential for effective water resource management. This study utilized Monte Carlo simulations and Geodetector to assess water quality and eutrophication, as well as to evaluate the sources of heavy metals and the associated health risks for both adults and children. The results showed that eutrophication of water sources in Huaihe River was severe, with an overall EI value of 37.92; 67.8% of the water sources were classified as mesotrophic and 32.2% classified as eutrophic. Water quality and eutrophication levels in the southern mountainous regions were better than those in the densely populated northern areas. Adults were found to have a higher carcinogenic risk than children, whereas children faced a higher noncarcinogenic risk than adults. Cr presented the highest carcinogenic risk, affecting more than 99.8% of both adults and children at levels above 1 × 10-6 but not exceeding 1 × 10-4. The noncarcinogenic risk from metals did not surpass a level of 1, except for Pb. As was primarily influenced by agricultural activities and transportation, whereas Cd, Cr, and Pb were mainly affected by industrial activities, particularly in local textile industries such as knitting and clothing manufacturing. The analysis demonstrated that the influence of anthropogenic factors on heavy metal distribution was significantly enhanced by indirect natural factors. For example, the explanatory power of Precipitation and Road Network Density on As was 0.362 and 0.189, respectively, whereas their interaction had an explanatory power as high as 0.673. This study indicates that the geodetector method is effective in elucidating the factors influencing heavy metal distribution in water, thereby providing valuable insights into pollution sources in global drinking water.

Predicting Soil Erosion Using RUSLE and GeoSOS-FLUS Models: A Case Study in Kunming, China

Revealing the relationship between land use changes and soil erosion provides a reference for formulating future land use strategies. This study simulated historical and future soil erosion changes based on the RULSE and GeoSOS-FLUS models and used a random forest model to explain the relative importance of natural and anthropogenic factors on soil erosion. The main conclusions are as follows: (1) From 1990 to 2020, significant changes in land use occurred in Kunming, with a continuous reduction in woodland, grassland, and cropland, being converted into construction land, which grew by 195.18% compared with 1990. (2) During this period, the soil erosion modulus decreased from 133.85 t/(km²·a) in 1990 to 130.32 t/(km²·a) in 2020, with a reduction in soil loss by 74,485.46 t/a, mainly due to the conversion of cropland to construction and ecological lands (woodland, grassland). (3) The expansion of construction land will continue, and it is expected that by 2050, the soil erosion modulus will decrease by 3.77 t/(km²·a), 4.27 t/(km²·a), and 3.27 t/(km²·a) under natural development, rapid development, and ecological protection scenarios, respectively. However, under the cropland protection scenario, the soil erosion modulus increased by 0.26 t/(km²·a) compared with 2020. (4) The spatial pattern of soil erosion is influenced by both natural and anthropogenic factors, and as human activities intensify in the future, the influence of anthropogenic factors will further increase. Traditionally, the expansion of construction land is thought to increase soil loss. Our study may offer a new perspective and provide a reference for future land use planning and soil loss management in Kunming.

The history of floristic research of forest biogeocenoses in the Northern Steppe Dnipro region

The study of the history of flora research in the forests of the Northern Steppe of Ukraine is extremely important for understanding the ecological processes and changes occurring in this region. The forests of the Northern Steppe Dnipro region, as unique ecosystems, have undergone significant transformations under the influence of anthropogenic factors. Understanding the historical aspects of these changes allows us to assess the current state of the forests and develop effective strategies for their conservation and restoration. This article aims to highlight the historical development of botanical research, from ancient historians' descriptions to modern scientific works. Despite its importance, the historical course of flora research in the forests of the Northern Steppe of Ukraine has remained insufficiently studied. The lack of a systematic review of research, from ancient times to the present, has limited the ability to fully understand the changes in species composition and ecological conditions of these forests. It is also important to assess the contributions of the first European travelers and scientists to the study of the region's flora and to determine the impact of anthropogenic factors on these ecosystems. The article provides a detailed review of historical sources related to the study of the flora of the forests of the Northern Steppe of Ukraine. The works of ancient historians, such as Herodotus, and European travelers of the XVII–XVIII centuries, including Guillaume Le Vasseur de Beauplan, Johann Anton Güldenstädt, and Peter Pallas, are considered. The contributions of XIX century scientists, such as Karl Friedrich von Ledebour and Ivan Schmalhausen, are analyzed. Special attention is given to the research of the XX century, which reflects changes in ecosystems under the influence of industrialization and agricultural development. The study revealed that anthropogenic factors, in particular, deforestation, the expansion of agricultural lands, and melioration works, have significantly affected the flora of the forests of the Northern Steppe of Ukraine. The analysis of historical data showed that past botanical research is an important source of information for modern understanding of the region's ecological dynamics. These data help develop strategies for the conservation and restoration of forest ecosystems. The historical development of flora research in the forests of the Northern Steppe of Ukraine is an important part of the scientific heritage, which contributes to expanding knowledge about natural resources and ecological processes of this region. Studying the historical aspects of changes in species composition and ecological conditions of the forests allows for the development of effective strategies for their restoration and conservation. The results obtained emphasize the need for further research and efforts to preserve biodiversity and restore the forest biogeocenoses of the Northern Steppe Dnipro region.

The Relationship between Energy and Climate Warming

This article highlights that the main causes of global warming are related to the production of military weapons. It has also been analyzed geographically and geopolitically that changes in carbon dioxide in the atmosphere under the influence of anthropogenic factors are one of the important factors shaping the “greenhouse effect”.

Трансформація оселищ і її вплив на зообіоту

The history of the use of the term “habitat” is considered. It is emphasized that this term refers to the habitat of a particular animal species or population and is determined by their ranges. The factors that lead to the destruction of habitats of many populations on the lowlands and in the highlands of the Ukrainian Carpathians are indicated. Attention is drawn to the degradation of mountain lakes and streams as habitats for aquatic hydrobionts. Among the factors that cause the destruction of habitats, the factors of both natural and anthropogenic origin are identified: climate change, absolute protection of territories, demutational processes, uncontrolled recreation activities, changes in traditional land use, water chemiсal composition and pollution, the appearance of invasive plants, urbanization, etc. The synergistic effect of these factors leads to rapid habitat change, and thus to the loss of adaptive capacity of individuals of different species to the changed conditions of their habi­tats. Among the objects of our study are such taxa as planktonic crustaceans (Cladocera), ants (Formicidae), lampreys (Cyclostomata), ray-finned fish (Actinopterygii), amphibians (Amphibia) and birds (Aves). It was found, in particular, that deciduous forest habitats are the most favorable for the existence of a significant diversity of ants. The mega-habitats for amphibians were identified as a complex of individual habitats that vary during the vegetation season and are connected by migration routes. The key habitat in Western Polissia, as an example, can be the Unychi wetland, which is home to a number of rare bird species. The nest-building behavior of birds under the influence of anthropogenic factors also undergoes changes - its species-specific appearance and composition of nesting materials are transformed in response to habitat pollution. In addition, the study showed that the use of invasive trees and shrubs for urban greenery has a negative impact on the diversity of urban bird fauna, as it paradoxically reduces the number of nesting and foraging habitats for birds. It is proposed to identify key habitats for the populations of rare and endangered animal species within the protected areas and on the non-protected ones, to indicate their locations and the type of management approach (protection, restoration, reconstruction, etc.).

Влияние антропогенного фактора на последствия применения огнестрельного оружия ограниченного поражения

Due to the development of the arms industry in Russia and the filling of various types of non-lethal kinetic weapons (NLW), also referred to as traumatic or kinetic weapons, the beginning of the XXI century is characterized by an intensive accumulation on the hands of the population in the Russian Federation (RF) of a significant number of its weapons. Thus, if in 2008 about 4.4 thousand crimes were committed with the use of traumatic weapons, then by 2012 the population of the Russian Federation had from 1.5 to 3.5 million samples of NLW in their hands. In 2015 alone, more than 1 million permits for possession of NLW were issued by the Ministry of Internal Affairs of the Russian Federation. The Nenets Autonomous District, which is part of the Arkhangelsk region, being along with other territories of the region, part of the Arctic zone of the Russian Federation, is among the leaders in the Russian Federation by the rate of increase in the number of registered crimes related to the illegal circulation of these weapons (+90.9 %). The combination of such factors as the presence of a significant number of firearms in the hands of the population, a high proportion of their illegal circulation and, as a consequence, the unjustified use of firearms in public places prompted us to study this problem from the side of the influence of anthropogenic (human) factor on human health.Purpose of the study. To study the influence of anthropogenic factor on the effects of NLW. Out of 248 victims, 235 (94.8 %) males and 13 (5.2 %) females were identified. The mean age was (31.8 years) and ranged from 16 to 64 years. The largest age category of 30–39 years was 100 (40.3 %) people, and the highest number of victims in the Arctic territory of the Arkhangelsk region was in 2011–2015. The subsequent decrease in the number of injuries is probably due to the adoption of a number of regulations tightening the turnover (FZ- № 398 of 28.12.2010 "On Amendments to Certain Legislative Acts", the order of the Ministry of Internal Affairs of Russia from 07.06.2022 № 403). A significant part of the victims — 80 (32.3 %) were admitted to hospital emergency rooms in a state of alcoholic or drug intoxication. As a result of the use of firearms, 3 victims (1.2 %) suffered disability and permanent disability. On the territory of the Arctic zone of the Arkhangelsk Region NLW were mostly used not for self-defense, but for hooligan motives 134 (98.5 %) cases out of 136 accurately determined.

Factor analysis in residual soils of the Iberian Pyrite Belt (Spain): comparison between raw data, log-transformation data and compositional data

The Iberian Pyrite Belt (IPB) is a metallogenic province in SW Spain and Portugal hosting the largest concentration of massive sulfide deposits worldwide. Exploration campaigns in both the Spanish and Portuguese sectors of the IPB have increased recently due to the rise in metal prices. Within this framework, distinguishing geochemical features associated with natural phenomena and isolating geogenic anomalies from anthropogenic ones can pose a challenge. This contribution uses the residual soil geochemical database of the IPB (Spain) to examine numerous variables, encompassing major, minor and trace elements. Some of these variables commonly exhibit high correlations owing to consistent geochemical behaviour. However, the influence of anthropogenic factors tends to elevate data variability, occasionally masking the natural relationships that govern their distributions. We apply different treatments of data to develop factor analysis using log-transformed data, and centred log-ratio (clr) transformed data to compare and improve the geochemical interpretation of this important zone. Factor analysis has been developed with these results to compare with previously published research on factor analysis in raw data. Factor score interpolated maps were also generated using both lognormal and clr-transformed data to visualize better the distribution and the different geochemical associations in the IPB. This study shows the importance of the different data treatments and the improvement of the clr-transformed multivariate analysis to reduce the dilution or overestimation of the results of some elements that cause erroneous interpretations of the data.

The Altai endemic <i>Sibiraea altaiensis</i> (Laxm.) Schneid.: possible use and methods of conservation

The article provides a review of data on the Altai endemic Sibiraea altaiensis (Laxm.) Schneid., one of the archaic species of the genus Sibiraea Maxim. The species is included in the Red Books of the Altai Republic, the Altai Territory, and of Kazakhstan as a rare species, whose numbers are decreasing, mostly due to the influence of anthropogenic factors in its habitats. At the same time, S. altaiensis belongs to agriculturally important species, which is valued for its decorative, medicinal and other useful properties. The species is reproduced by seed, layering shoots, root and summer stem cuttings; however, these methods do not always give good results, and also require large areas for growing plants and are confined to a certain season of the year.Microclonal propagation of plants can become a promising method for the propagation and conservation of S. altaiensis. It consists in the use of in vitro techniques of rapid asexual production of plants that are genetically identical to the original specimen, with a significant saving of time and space required for growing planting material. The use of microcloning for the conservation and reproduction of rare and endangered species is highly justified, since it allows a significant increase in the reproduction rate of plant species, which are difficult or impossible to reproduce vegetatively, or those with low viability or seed productivity.Using in vitro protocols for the propagation of S. altaiensis, 10-28 microshoots were obtained from one lateral bud, which was used as an explant, when cultivated on a modified and a classic Murashige and Skoog (MS) nutrient media supplemented with 1.0 mgL-1 6-benzylaminopurine (6-BAP). These works confirm that in vitro cloning ensures a high reproduction rate of S. altaiensis and, thus, makes it possible to preserve the gene pool of the species and obtain planting material on a commercial scale without causing damage to natural populations.

Spatial patterns and driving forces of urban vegetation greenness in China: A case study comprising 289 cities

Urban vegetation in China has changed substantially in recent decades due to rapid urbanization and dramatic climate change. Nevertheless, the spatial differentiation of greenness among major cities of China and its evolution process and drivers are still poorly understood. This study examined the spatial patterns of vegetation greenness across 289 cities in China in 2000, 2005, 2010, 2015, and 2018 by using spatial autocorrelation analysis on the Normalized Difference Vegetation Index (NDVI); then, the influencing factors were analyzed by using the optimal parameters-based geographical detector (OPGD) model and 18 natural and anthropogenic indicators. The findings demonstrated a noticeable rise in the overall greenness of the selected cities during 2000–2018. The cities in northwest China and east China exhibited the rapidest and slowest greening, respectively, among the six sub-regions. A significant positive spatial correlation was detected between the greenness of the 289 cities in different periods, but the correlation strength weakened over time. The hot and very hot spots in southern and eastern China gradually shifted to the southwest. While the spatial pattern of urban greenness in China is primarily influenced by wind speed (WS) and precipitation (PRE), the interaction between PRE and gross domestic product (GDP) has the highest explanatory power. The explanatory power of most natural factors decreased and, conversely, the influence of anthropogenic factors generally increased. These findings emphasize the variations in the influence strength of multiple factors on urban greenness pattern, which should be taken into account to understand and adapt to the changing urban ecosystem.

Number of melanin-synthesising microorganisms under mineral fertilisation and liming of Albebeluvisoil

The study of the main patterns of distribution of microorganisms that synthesise melanins, which are precursors and components of humus molecules in agrocenosis soils is an urgent scientific task. The purpose of this study was to determine the influence of agrochemical factors on the number of melanin-synthesising microbial species and bacteria in grey forest soil. Microbiological, laboratory and analytical, and statistical methods were employed in the study. It was found for the first time that the number of melanin-synthesising micromycetes is minimal in the soil of the variant without fertilisers, liming with one dose according to hydrolytic acidity contributes to an increase in their number by 86.8%, application of mineral fertilisers in a dose of N30Р30К45 – 2.0 times, compatible use of lime and mineral fertilisers – 2.94 times. A 1.5-fold increase in the dose of mineral fertilisers leads to a 2.54-fold increase in the number of colony-forming units (CFU) of melanin-synthesising microbial species compared to a single dose of fertilisers, and a 2.0-2.62-fold increase in the dose of fertilisers, which coincides with the results of the analysis of the humus content in the soil of these variants – it exceeds the humus content in the variant with a single dose of fertilisers by 26.5% and 16.3%, respectively (correlation coefficient is 0.811). The number of melanin-synthesising bacteria in grey forest soil is 2-3 orders of magnitude higher than the number of melanin-synthesising micromycetes. However, the patterns of influence of anthropogenic factors on their number coincide with those established for micromycetes: liming with one dose of hydrolytic acidity leads to an increase in the number of melanin-synthesizing bacteria by 26.1%, application of mineral fertilizers in a dose of N30Р30К45 – 2.03 times, combined use of lime and mineral fertilisers – 2.48 times. A 1.5-fold increase in the dose of mineral fertilisers leads to a 5.8-fold increase in the number of melanin-synthesising bacteria compared to a single dose of fertiliser, while a 2.0-fold increase in the dose of fertiliser leads to a 13.3-fold increase, respectively. The correlation coefficient between the number of melanin-synthesising bacteria and the humus content in the soil is 0.417. The findings of the presented research can be used to develop recommendations for measures to increase the humus content of agricultural soils

Generation abundance dynamics of peled at the lower reaches of the Ob’ River in 1981–2021

The generation abundance of peled has been assessed at the lower reaches of the Ob’ River. Based on data on the number of larvae migrated downstream from spawning grounds, obtained in 1981–2021 on the main spawning rivers, current population structure of peled at the lower reaches of the Ob’ River is described, the influence of anthropogenic factors and of the water content of the Ob’ River floodplain on peled reproduction is analyzed. The Severnaya Sos’va River definitely plays a decisive role in the reproduction of peled. In recent years, there has been an increase in the contribution of the Voikar and Sob’ rivers. Seven-year cycles have been identified (between the peaks in the larvae number); their maximums coincide with the peaks of water content at the lower reaches of the Ob’ River with a 1-year lag, which supports the world’s largest river peled population abundance. The presence of such cycles makes it possible to predict phases of high fish abundance. An equation describing the dependence of the generation size of peled at the lower reaches of the Ob’ River on the average water level of Ob’ River in June–August at the Salekhard gauging level in the previous year is proposed.

MINERAL-ORGANIC COMPOSITE FOR IMMOBILIZING PBIN SOIL SUBJECTED TO AIDED PHYTOSTABILIZATION

The content of Pb in the surface layer of soil is largely connected with the influence of anthropogenicfactors. The degradation of soil caused by the presence of increased heavy metal contents has ledto the search for or improvement of effective remediation methods. The study made use of thetechnique of aided phytostabilisation for immobilizing Pb in the soil using a composite based ondolomite and compost (CDC) as a soil amendment, as well as Lolium perenne L. The efficiency wasassessed in terms of determining the Pb content in the soil, roots and above-ground parts of thetest plant with the use of the atomic absorption spectrometry method. The application of CDC tosoil had a positive influence on increasing the production of plant biomass and the pH of the soil,with the Pb being higher in the roots than in the above-ground parts of Lolium perenne L. Uponcompleting the experiment, the soil amendment was found to have had a positive influence ondecreasing the average Pb content in the soil (by 18%) as well as the CaCl2-extractable Pb forms(23%). In the case of the contents of this element in the roots and above-ground parts, on the otherhand, the influence was +53% and –36% respectively.

Pine needles and soil as bioindicators of forest ecosystems in the anthropogenically disturbed areas of the Baikal region

Forest ecosystems of Baikal region were chosen a subject of comprehensive research conducted on the basis of the monitoring network created. Recommendations of the international manual ICP Forests, as well as the authors’ developments were used for the research. The study was focused on toxicological, physiological-biochemical, and biogeochemical indicators that adequately reflect the state and manifestation of the protective properties of the forest ecosystem main components (tree-stand and soil) under the influence of anthropogenic factors – air pollution, urbanization, and irrational forest management. The assessment of the vital state of tree-stands of Scots pine (indicator species) was carried out on the basis of representative indicators: pigments, the level of enzymatic and non-enzymatic components of antioxidant protection, the content and ratio of biogenic elements, changes in morphometric parameters. When studying soil in anthropogenically disturbed territories, an increase in soil density, a decrease in natural moisture, aeration, and humus content were found, alkalization of the upper horizons and accumulation of pollutants with a low migration rate in the upper horizons of the soil profile. Air pollution and high recreational load were shown to produce the greatest stressful impact on the forest ecosystems.

Elaboration and application of sustainable development indicators at the regional level

The sustainability of socio-economic development of the region is largely determined by the rational use of natural resource potential of the territory. Violations of the natural course of processes occurring in natural complexes, caused by the deterioration of the environmental situation, make geo-ecological research the most urgent and priority direction of regional and sectoral projects in the field of sustainable development. The development of regional sustainability indicators should be based on a comprehensive integral geo-ecological assessment of urbanized territories, taking into account the features and changes in natural and socio-economic factors. The purpose of this study is to develop, justify and validate indicators for assessing the sustainable development of the Kaluga region. The object of the study is the sustainability of development of the system “nature-population-economy” in the Kaluga Oblast. The subject of the study is the change of life-supporting resources of geospheric envelopes under the influence of anthropogenic factors, their protection, rational use and control; the state of public health and the quality of the social sphere; the scale and pace of economic growth to ensure sustainable development of the Kaluga Oblast. The article pays attention to the key issues related to the concepts of sustainable development.