scholarly journals The Peculiarities of Geoecological State of the Lake-Basin System of Ozerianske Lake (Volyn Polesia)

2020 ◽  
Keyword(s):  
Heavy Metals ◽  
Soil Profile ◽  
Catchment Area ◽  
Ecological Status ◽  
Nature Management ◽  
Biogenic Elements ◽  
Mineral Fertilizers ◽  
Lake Basin ◽  
Lateral Migration ◽  
Basin System

Purpose. To reveal the peculiarities of geo-ecological status of the lake-basin system (LBS) of Ozerianske lake for the needs of a balanced nature management. Methods.The research is based on methods of field instrumental landscape-geochemical searches using modern geoinformation technologies and laboratory-analytical diagnostics of soil, water and lake sediments. Results. The current state of economic development of the catchment of Ozerianske lake has been clarified. The results of the research of the hydrochemical composition of lake water have been presented. The results of the experiments with the determination of the content and features of radial, lateral migration of mobile forms of biogenic elements (N, P2O5, K2O) and heavy metals (Co, Pb, Cd, Cu, Zn, Mn) on a landscape soil geochemical microcatena within the catchment area of a lake have been analyzed. A slight excess of MPC in the content of Mn and Cd in the soils of the microcatena has been fixed. The feature of lateral migration of biogenic elements is the increase of their concentration from the eluvial to the superequal facies of the geochemical microcatena, and the radial feature is the decrease of their content with the depth of the soil profile. Moving forms of heavy metals (Co, Pb, Cd, Cu, Mn) are characterized by radial migration - increasing their content with the depth of the soil profile in the horizon (20-40 cm), and further towards the parent rock, their concentration mainly decreases. Conclusions. It was established that the catchment area of Ozerianske lake refers to the anthropogenic-natural (IV) type and has unsatisfying geo-ecological status. In order to improve the geo-ecological status of the catchment area, it is advisable to gradually increase the area of ecostabilizing lands (meadows, forests, forage areas); to control the application of mineral fertilizers and pesticide use, and to prohibit the plowing of land by a 50-100-meter coastal protective strip around the lake.

scholarly journals The basin-landscape approach to the protection and condition optimization of the lakes of the national parks

2020 ◽  
Keyword(s):  
National Parks ◽  
Practical Importance ◽  
Ecological Status ◽  
Nature Management ◽  
Lake Basin ◽  
Landscape Approach ◽  
Nature Protection ◽  
Landscape Characteristics ◽  
Condition Optimization ◽  
Basin System

The essence of the basin-landscape approach to the protection of the lakes of the national parks as an actual direction of research, which is formed at the junction of nature protection landscaping, hydrology and geoecology has been substantiated. The research algorithm, peculiarities of analysis and assessment of the status of the lake-basin system (LBS) have been found out, the factors that worsen the geo-ecological state in the lake and basin subsystems have been revealed, optimization measures in the objects of the nature reserve fund located within the natural reserve have been substantiated. The purpose of the study is to determine the parameters of the structure of lake-basin landscapes (on the example of Zasvitske lake, Nobel National Natural Park, Ukraine), liminary and landscape-metric indicators of the geo-ecological status of the LBS and the factors influencing it as an information and analytical basis for ensuring the protection and management of the LBS located in nature conservation area. The materials of the study were the long-term field landscape-limnological and geo-ecological studies of the authors within the Polesia region of Ukraine and, in particular, the LBS of the Nobel National Nature Park. The research methodology was based on complex physical-geographical methods, hydrological profiling and creation of bathymetric models of reservoirs, hydrochemical diagnostics of water masses of the lakes, geochemical analyses of bottom sediments, landscape mapping using GIS-technologies. The results of geo-ecological (landscape-ecological) researches of the lake-basin system of Zasvitske lake have been presented, in particular, original profiles and bathymetric model of the reservoir, landscape maps of the aqual complex and the lake catchment, limno- and landscape characteristics of the LBS have been shown. Considering the level of anthropogenic transformations of the LBS and the presence of a high proportion of ecologically-stabilizing lands (forests, reservoirs of natural origin), the level of sustainability of the LBS is estimated as high. An assessment of the hydrological characteristics of the reservoir and hydrochemical characteristics allows to attribute this lake to an oligotrophic type. The results of a comprehensive analysis of the geo-ecological parameters of the state of Zasvitske lake and its landscape-limnological functioning indicate the expediency of recreational specialization of nature management in the Nobel National Park, that includes this lake. Scientific novelty. The application of proposed landscape-basin approach and the algorithm of the LBS study increase the possibilities of functional zoning of national parks with high index of lakes, as well as solving the problems of nature protection and optimization of nature management. Practical importance. The created electronic landscape maps and the base of limnometric parameters can be used as reference documents for the certification and cadastral evaluation of the transboundary protected areas of Ramsar type, geo-ecological monitoring and an integrated management of lakes by the basin approach in conditions of intense climate change.

scholarly journals Improvement of the methodology for the assessment of soil biogenic pollution through the use of geoecological approaches and the use of information technologies

2021 ◽  
Vol 3 (10(111)) ◽  
pp. 42-53
Author(s):  
Iryna Omelych ◽  
Natalia Neposhyvailenko ◽  
Oleksandr Zberovskyi ◽  
Iryna Korniienko
Keyword(s):  
Catchment Area ◽  
Information Technologies ◽  
Vegetation Index ◽  
Experimental Studies ◽  
Nature Management ◽  
Biogenic Elements ◽  
Mineral Fertilizers ◽  
Nitrogen And Phosphorus ◽  
Digital Elevation ◽  
Elevation Model

The study of the components of the balance of biogenic elements in anthropogenic ecosystems has been carried out and the mechanism for calculating the balance of biogenic elements has been determined. The necessity of improving the existing methodology is proved, which consists in preliminary modeling of the catchment area using geoinformation methods. On the example of the mouth of the river, a drainage area was modeled in Oril, during which the boundaries and total catchment area were determined, which is 39.7 thousand hectares. Experimental studies have determined the area of land according to their types of nature use (industrial, residential, forestry and agricultural, etc.). It has been established that only 15% of the investigated lands have agricultural use, however, it is this type of nature management that most contributes to biogenic pollution of this ecosystem. According to the results of calculations, it is determined that up to 10 thousand tons of nitrogen and phosphorus, respectively, are accumulated in the soil due to the excess use of mineral fertilizers. The results obtained indicate the feasibility and practical attractiveness of the proposed approach for calculating the balance of nutrients. Improvements include the application of digital elevation model and normalized vegetation index geodata obtained using ArcGIS Desktop software. It is shown that the technique used will allow obtaining the results of the adjusted volumes of nitrogen and phosphorus accumulation in soils and indicating the sources of their input. Thus, there are grounds for improving the methodology for calculating the balance of nutrients through the use of information technology. The geoecological approach will intensify the monitoring of nutrients, which will help to regulate the pressure on the ecosystem.

scholarly journals Results of monitoring of natural and anthropogenic agro ecosystems transformation in the Voronezh Region for the period of agricultural environmental management

2020 ◽  
Vol 9 (1) ◽  
pp. 14-18
Author(s):  
Falak Almobarak ◽  
Lydia A. Mezhova
Keyword(s):  
Environmental Management ◽  
Ecological Monitoring ◽  
The State ◽  
Nature Management ◽  
Biogenic Elements ◽  
Mineral Fertilizers ◽  
Systematic Observation ◽  
Observation Study ◽  
Erosion Processes ◽  
Voronezh Region

The paper deals with the theoretical analysis of peculiarities of agricultural nature management influence on the components of natural environment in the Voronezh Region. A retrospective analysis of soil research reveals a degree of its degradation. Dynamics of agro ecosystems development and the degree of change in the natural background of vegetation are determined; the peculiarities of agricultural impact are shown. The value of land resources in the Voronezh Region is determined by their fertility. The State Center of Agrochemical Service Voronezh and the State Station of Agrochemical Service Talovskaya control the structure, dynamics and condition of soils. As a result, soils of agro ecosystems on phosphorus, potassium, humus, acidity, heavy metals, mineral fertilizers and pesticides are comprehensively monitored. The Land Committee for the Voronezh Region reveals violations of the land legislation. Agro ecosystems have an unclosed cycle of biogenic elements. This is related to the loss of nutrients during harvesting and the activation of erosion processes. Changes in the balance of basic soil nutrients reduce the quality and yield of crops. Agro ecological monitoring includes systematic observation, study and analysis. In this regard, there is a need for research into the significant magnitude of the associated factors. The existing system of regional monitoring is based on the repeatability of soil, agrochemical and bacteriological studies of agroecosystems. Both continuous and local agro monitoring is conducted. It should be noted that agroecosystems of the region are insufficiently provided with biogenic elements, microelements and in this connection there is a need to create a model of balanced agricultural environmental management.

scholarly journals Landscape-geographical model of ecological passport of basin system of Ozertse lake (Volyn Polissia)

2017 ◽  
Keyword(s):  
Bottom Sediments ◽  
Nature Reserve ◽  
Land Reclamation ◽  
Nature Management ◽  
Laboratory Diagnostics ◽  
Lake Basin ◽  
Recreational Water ◽  
Landscape Models ◽  
Aquatic Complex ◽  
Basin System

Purpose. To substantiate the features of the landscape-geographic model of the ecological passport of the lake basin for the needs of preserved and recreational nature management. The article is focused on the acute need in development of ecological passports of local environmentally protected sites for formation of a regional inventory of nature reserve fund. The concept of a natural aquatic complex (NAC) of the lake, a lake-basin system (LBS) served as a methodological basis of the proposed work. The research is based on the methods of field instrumental landscape-limnological searches with the use of laboratory diagnostics of soil samples of the catchment and bottom sediments of the lake, and the landscape-based analysis of the LBS. The results of the study are presented in the form of landscape models of NAC of Ozertse lake and the natural territorial complexes (NTC) of the catchment. Landscape complexes of the rank of a tract and aquatic facies are allocated in the OBS of Ozertse lake. The geochemical features of the bottom sediments of the water body on the example of one of the points of sounding, hydrological and morphologic-morphometric parameters of NAC of the lake and its catchment, and the landscape-metric characteristics of the integrated lake-basin system are analysed. Conclusions. The developed landscape-geographic model of the lake basin system will be a base for the ecological passport of Ozertse lake. Ecological passports of such type are needed for ecological, tourist-recreational, water management and land reclamation institutions and establishments, as well as for the newly formed united territorial communities.

scholarly journals Heavy metals risk assessment in water and bottom sediments of ICOLLs in Northern Poland

2018 ◽  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Bottom Sediments ◽  
Sea Water ◽  
Ecological Status ◽  
Multidimensional Data ◽  
Lake Basin ◽  
Sample Type ◽  
Data Set ◽  
Wide Range

<p>Natural diversity of intermittently closed and open lakes and lagoons (ICOLLs) depends on mutual interactions of several factors: (i) an impact of sea water and land background; (ii) temporary meteorological situation; (iii) hydrological conditions; and (iv) the shape of lake basin. However, some regional, local or even sudden impacts including anthropogenic ones create their final ecological status. To identify heavy metals risk assessment in ICOLLs located in Polish coastline wide range of them were determined in water and bottom sediment samples collected in 10 water reservoirs. Multidimensional data set of 20 variables was explored by the use of chemometrics according to seasonality (Spring, Summer, Autumn), sample type (water, sediment) and level of isolation (fully isolated, partially and fully connected lakes). The results showed that 70.5% and 77% of the data variance can be explained by the use of principal component analysis for waters and sediments, respectively. Waters of fully isolated or partially connected lakes are more abundant with Ir, Nd and Sm, while less abundant with Pr and Sr. Bottom sediments taken from Jamno lake show significant contamination by heavy metals of the highest environmental concern (Al, Cr, Cu, Ni, Ti and Zn).</p>

scholarly journals Assessment of the Ecological and Geographical Condition of the Basin System Lakes Strilske (Hydrological Monument of Nature)

2021 ◽  
Keyword(s):  
Bottom Sediments ◽  
Chemical Elements ◽  
Oxygen Demand ◽  
Morphological Structure ◽  
Aquatic Organisms ◽  
Nature Management ◽  
Lake Basin ◽  
Nature Protection ◽  
Catchment Areas ◽  
Basin System

Topicality. The available information on specific lakes of nature protection fund (NPF) objects, primarily of local significance, is limited to brief information on morphometric and hydrological characteristics, information on the rare component of aquatic organisms and the species diversity of the adjacent catchment areas. This state of affairs does not benefit the development of protected areas and encourages ecological and geographical searches of lakes or lake-basin systems, which are part of the NPF. Purpose is to assess the ecological and geographical condition of the lake basin system Strelske (hydrological monument of nature) for cadastral needs of NPF objects of Polissya region of Ukraine. Methods of regional constructive-geographical limnology, landscape-limnological analysis, soil-geochemical profiling of lake catchments, GIS-cartographic modeling. Results of the study are presented in the form of a cartographic model of the spatial-typological structure of the lands of the lake catchment. Shooting and substantiation of its geoecological condition, bathymetric map of the lake and morphological-morphometric and hydrological calculations of the LBS. The hydrochemical parameters of the lake were analyzed according to the block of indicators of salt composition, tropho-saprobiological characteristics and substances of toxic action. The lithological composition and capacity of the bottom sediments of the lake are estimated, the graphs of radial migration of chemical elements and compounds at one of the probing points are constructed and the qualitative composition of the lake sapropel is substantiated. Using GIS technologies, a landscape map of the natural-aqual complex of the lake was built. Shooting and landscape-metometric assessment of its morphological structure. Conclusions. The basin system has in the past undergone anthropogenic transformations as a result of reclamation nature management, which has limited the share of surface runoff into the lake. The lake water exceeded the MPC by 1.7 times the chemical oxygen demand, 1.6 times the biological oxygen demand and 2 times the total iron consumption. The lake basin is 65.7% filled with bottom sediments, which are represented mainly by organo-iron sapropel. The littoral aqua facies of the lake suffer the greatest anthropogenic load, which is connected with the recreational activities of the seasonally functioning recreation center.

The change in agrochemical indicators of soil fertility under the influence of heavy metal contamination

2016 ◽  
Vol 2 (91) ◽  
pp. 17-21
Author(s):  
S. H. Korsun ◽  
N. I. Dovbash
Keyword(s):  
Heavy Metals ◽  
Forest Soil ◽  
Heavy Metal Contamination ◽  
Gray Forest Soil ◽  
Mineral Fertilizers ◽  
Background Concentration ◽  
Physico Chemical ◽  
Natural Background Concentration ◽  
Nitrogen Phosphorus ◽  
Hydrolytic Acidity

The aim of the study was to establish changes in the physico-chemical and agrochemical characteristics of gray forest large-clay loamy soil, depending on the contamination of ecotopes by heavy metals. Methods. Field, laboratory, mathematical and statistical. Results. The results of the study of the soil of areas with an over-dimensioned content of heavy metals and the transformation of agrochemical characteristics of gray forest soil in the cultivation of corn for grain. It was established that under conditions of systematic application of mineral fertilizers in agrocenoses, an increase in the lead concentration to 100 mg/kg, cadmium to 2,0, zinc to 50 mg/kg in gray forest soil did not result in a decrease in the amount available forms of nitrogen, phosphorus, potassium by plants, compared with the natural background. Concentration of lead in the amount of 1000 mg/kg, cadmium – 20, zinc – 500 mg/kg marked an increase in exchange and hydrolytic acidity and loss of humus.

scholarly journals Source and Health Risk Assessment of Heavy Metals in Soil–Ginger System in the Jing River Basin of Shandong Province, North China

2021 ◽  
Vol 18 (13) ◽  
pp. 6749
Author(s):  
Songtao Wang ◽  
Zongjun Gao ◽  
Yuqi Zhang ◽  
Hairui Zhang ◽  
Zhen Wu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
River Basin ◽  
Soil Profile ◽  
Pollution Index ◽  
Potential Ecological Risk ◽  
Average Concentration ◽  
Anthropogenic Factors ◽  
Multivariate Statistical ◽  
Cr Content

This study investigated the characteristics and sources of heavy metals in a soil–ginger system and assessed their health risks. To this end, 321 topsoil samples and eight soil samples from a soil profile, and 18 ginger samples with root–soil were collected from a ginger-planting area in the Jing River Basin. The average concentration of heavy metals in the topsoil followed the order: Cr > Zn > Pb > Ni > Cu > As > Cd > Hg. In the soil profile, at depths greater than 80 cm, the contents of Cr, Ni, and Zn tended to increase with depth, which may be related to the parent materials, whereas As and Cu contents showed little change. In contrast, Pb content decreased sharply from top to bottom, which may be attributable to external environmental and anthropogenic factors. Multivariate statistical analysis showed that Cr, Ni, Cu, Zn, and Cd contents in soil are affected by natural sources, Pb and As contents are significantly affected by human activities, and Hg content is affected by farmland irrigation. Combined results of the single pollution index (Pi), geo-accumulation index (Igeo), and potential ecological risk assessment (Ei and RI) suggest that soil in the study area is generally not polluted by heavy metals. In ginger, Zn content was the highest (2.36 mg/kg) and Hg content was the lowest (0.0015 mg/kg). Based on the bioconcentration factor, Cd and Zn have high potential for enrichment in ginger. With reference to the limit of heavy metals in tubers, Cr content in ginger exceeds the standard in the study area. Although Cr does not accumulate in ginger, Cr enrichment in soil significantly increases the risk of excessive Cr content in ginger.

The distribution of lead, zinc, and chromium in fractions of bottom sediments in the Narew River and its tributaries

2008 ◽  
Vol 37 (4) ◽  
Author(s):  
Mirosław Skorbiłowicz ◽  
Elżbieta Skorbiłowicz
Keyword(s):  
Heavy Metals ◽  
Grain Size ◽  
Bottom Sediment ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Bottom Sediments ◽  
Catchment Area ◽  
Sediment Pollution ◽  
Lead Zinc

The distribution of lead, zinc, and chromium in fractions of bottom sediments in the Narew River and its tributariesThe purpose of the paper was to evaluate the distribution of lead, zinc and chromium contents in different grain fractions of bottom sediments in the Narew River and some of its tributaries. This study also aimed to determine which fractions are mostly responsible for bottom sediment pollution. The studies of the Narew and its tributaries (the Supraśl, Narewka, and Orlanka) were conducted in September 2005 in the upper Narew catchment area. The analyzed bottom sediments differed regarding grain size distribution. The studies revealed the influence of the percentage of particular grain fractions present on the accumulation of heavy metals in all bottom sediments.

Modelling uranium leaching from agricultural soils to groundwater as a criterion for comparison with complementary safety indicators

2006 ◽  
Vol 932 ◽  
Author(s):  
D. Jacques ◽  
J. Šimůnek ◽  
D. Mallants ◽  
M.Th. van Genuchten
Keyword(s):  
Soil Profile ◽  
Reactive Transport ◽  
Transport Model ◽  
Agricultural Soils ◽  
Solid Phase ◽  
Water Flux ◽  
Fertilizer Application ◽  
Mineral Fertilizers ◽  
Deep Soil ◽  
Long Time

ABSTRACTNaturally occurring radionuclides can also end up in soils and groundwater due to human practices, such as application of certain fertilizers in agriculture. Many mineral fertilizers, particularly (super)phosphates, contain small amounts of 238U and 230Th which eventually may be leached from agricultural soils to underlying water resources. Field soils that receive P-fertilizers accumulate U and Th and their daughter nuclides, which eventually may leach to groundwater. Our objective was to numerically assess U migration in soils. Calculations were based on a new reactive transport model, HP1, which accounts for interactions between U and organic matter, phosphate, and carbonate. Solid phase interactions were simulated using a surface complexation module. Furthermore, all geochemical processes were coupled with a model accounting for dynamic changes in the soil water content and the water flux. The capabilities of the code in calculating natural U fluxes to groundwater were illustrated using a semi-synthetic 200-year long time series of climatological data for Belgium. Based on an average fertilizer application, the input of phosphate and uranium in the soil was defined. This paper discusses calculated U distributions in the soil profile as well as calculated U fluxes leached from a 100-cm deep soil profile. The calculated long-term leaching rates originating from fertilization are significantly higher after 200 years than estimated release rates from lowlevel nuclear waste repositories.

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