scholarly journals Рatterns of spreading of heavy metals in soils of urbanized landscapes (on the example of Brovary city)

2020 ◽  
Vol 29 (3) ◽  
pp. 580-590
Author(s):  
Anastasiia O. Splodytel
Keyword(s):  
Heavy Metals ◽  
Urban Areas ◽  
Chemical Elements ◽  
Organic Matter Content ◽  
Transport Infrastructure ◽  
Pollution Level ◽  
Technogenic Pollution ◽  
Residential Areas ◽  
Geochemical Parameters ◽  
The City

Results of the study about pollutants content in soils of urbanized landscapes are presented. Patterns of their migration and accumulation in main soil types of Brovary are grounded. Correlation relationships between the individual components of ecologicalgeochemical system of urbanized territory were analyzed. Dependences of landscape resistance to technogenic pollution on the level of conservation of natural geochemical parameters of soils, degree of their anthropogenic transformation and level of heavy metals were determined. According to geochemical criteria technogenic associations of heavy metalsin soils are determined, which are represented by the following elements: Cu>Pb>Zn>Co>Cr>V>Mo>Mn>Ni. Level of gross content of chemical elements compounds in soils of different zones of the city is heterogeneous. City zones with the highest polyelement contamination of soil have been identified. Maximum technogenic load is recorded in urban areas of transport infrastructure zone and zone of production and communal-warehouse facilities. Ecological and geochemical assessment on the total index of pollution by using methods of Y.E. Saeta, is shown. Value of this topsoil parameter in Brovary (0-10 cm) ranges from 30 to 106, the average is 65, which corresponds to hazardous level of soil pollution. According to the total indicator of technogenic pollution, Brovary belongs to cities with high pollution level. Soils in all parts of the city, except for residential areas, are classified as hazardous. Studied soils of the city are characterized by plumbum geochemical specialization. High levels of zinc, manganese, cobalt and chromium were also found (the maximal permissible concentrations in soil exceeds by 1.7-4.7 times). Especial attention is paid to the patterns, mechanisms of pollutants influence on the complex of soil properties and processes that determine the ecological condition of soils and their resistance to anthropogenic flows. Soil contamination by pollutants leads to changes in their physical and chemical properties (cation exchange capacity pH, organic matter content) which causes a low buffering capacity of soil cover of the city.

scholarly journals ECOLOGICAL AND GEOCHEMICAL SPECIFICS OF SOIL AND PLANT COVERING OF URBAN LANDSCAPES (IN THE TOWN OF BROVARY AS AN EXAMPLE)

2021 ◽  
Vol 51 (2) ◽  
pp. 214-222
Author(s):  
Anastasiya Splodytel
Keyword(s):  
Heavy Metals ◽  
Urban Soils ◽  
Betula Pendula ◽  
Populus Deltoides ◽  
Chemical Elements ◽  
Transport Infrastructure ◽  
Alnus Incana ◽  
Acer Platanoides ◽  
Absorption Coefficients ◽  
The City

The results of the pollutants content research in urbanized landscapes soils of Ukraine (on the example of Brovary city, Kyiv region) were shown. The total and mobile contents data of chemical elements (Ni, Co, Zn, V, Pb, Cr, Cu) were obtained and analyzed using the methods of landscape-geochemical studies, analytical and statistical methods. The dependences of the vegetation resistance in cities to the level of soil cover contamination and the degree of heavy metals income have been established. The geochemical characteristics (such as the value of the accumulation coefficients; concentration of soil and vegetation cover; index of biogeochemical activity of the species within Brovary city) were analyzed. Throughout most of the city territory, the level of soil contamination is above average. Soils are characterized by the following association of heavy metals: Cu> Pb> Zn> Co> Cr> V> Mo> Mn> Ni. The dominant association is distributed heterogeneous throughout the city, forming geochemical anomalies depending on the source of contamination. The maximum technogenic load was recorded in urban soils areas within zones of transport infrastructure, production and communal-warehouse facilities.Woody vegetation is the most actively absorbed copper, manganese from the soil, and the least intensively absorbed chromium, vanadium and nickel. The biogeochemical activity coefficient of the research species is the following: Acer platanoides - 7,26, Betula pendula Roth. - 7,07, and Populus deltoides - 7,05, Pínus sylvestris - 1.32 and Alnus incana - 3.37. The biological absorption coefficients of manganese and copper are high because these metals have the ability to form strong complexes with organic matter. Biological absorption coefficients of vanadium and chromium is low for the researched plant species because these chemical elements are immobile in soils. For the city of Brovary, the presence of polyelemental contamination of soil and vegetation has been established. According to the indicators of the gross content of VM, the main pollutants are Cu, Zn, Pb and Mn. Concentrations of gross and mobile forms of VM exceed background values ​​and maximum concentration limits in 17-28 times. The maximum of man-caused load was recorded in the urban soils of the transport infrastructure zone and the zone of production and communal-warehouse facilities. Regularities of formation of elemental composition of plants of urban areas undergo significant changes in comparison with natural conditions, which is due to the strengthening of the role of foliar absorption of pollutants from the air and their high content in soils. The greatest ability to bioaccumulate has a male thyroid (Dryopteris filix-mas Schott) and birch (Convolvulus arvensis). The highest coefficient of biogeochemical activity of the studied species is Acer platanoides - 7.26, hanging birch (Betula pendula Roth.) - 7.07 and Canadian poplar (Populus deltoides) - 7.05, the lowest - Scots pine (Pínus sylvеstris ) - 1.32 and gray alder (Alnus incana) - 3.37. Weakly and very weakly, most of the studied plant species capture vanadium and chromium, which are relatively sedentary in the soil. Further research is needed to analyze the physicochemical parameters of soils, the coefficients of transition of metals to plants relative to their content in organic and mobile form in order to establish the relationships that characterize the process of translocation of chemical elements. Keywords: landscape-geochemical conditions, heavy metals, soils, vegetation.

scholarly journals Comparative assessment of heavy metal content in soils of different urban agglomerations: methodological approaches to environmental monitoring

2020 ◽  
pp. 71-79
Author(s):  
I.M. Andrusyshyna ◽  
◽  
I.O. Holub ◽  
V.F., Demchenko ◽  
O.G. Lampeka ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Soil Pollution ◽  
Urban Areas ◽  
Chemical Elements ◽  
Background Level ◽  
Comparative Assessment ◽  
Emission Spectrometry ◽  
Urban Agglomerations ◽  
Geochemical Associations ◽  
The City

Objective: We studied the regional characteristics of soil pollution with heavy metals and other chemical elements, presented their comparative ecological and hygienic assessment. Materials and methods: We detected the content of 12 elements in the soils of urban agglomerations of the city of Kyiv (park, residential and transport zones), Donetsk oblast (Mariupol, Pisky etc.) and in the vicinity of the city of Halych (Ivano-Frankivsk oblast) with the help of the method of optical emission spectrometry. We studied the gross content of heavy metals in soils, determined their mobile forms, calculated the concentration coefficients and the indicator of the total soil cover pollution of urban agglomerations, established characteristic relationships between metals and their technogenic geochemical associations. Results and discussion: Among the analyzed chemical elements in soils of urban areas, the high content of Al, Mn and Crattracts a special attention. In the number of cases, it was higher than the MAC and the background level. The characteristic technogenic geochemical associations of heavy metals for studied territories were established: Cu > Cr > Pb > Zn > Ni > Mn. The mobility of heavy metals in technologically polluted soils increases in comparison with the background levels. Conclusion: A comparative assessment of soil pollution in the surveyed regions of Kyiv, Ivano-Frankivsk and Donetsk showed that they are under complex environmental pressure because of anthropogenic and technogenic environmental pollution with heavy metals.

scholarly journals HYGIENIC ASSESSMENT OF THE CONTENT OF CHEMICALS IN THE SOIL OF MINING AREAS OF THE TRANS-BAIKAL REGION

2019 ◽  
Vol 98 (4) ◽  
pp. 400-410 ◽  
Author(s):  
L. A. Mikhailova ◽  
M. A. Solodukhina ◽  
O. G. Alekseeva ◽  
N. M. Burlaka ◽  
S. E. Lapa
Keyword(s):  
Heavy Metals ◽  
Soil Contamination ◽  
Chemical Elements ◽  
Raw Materials ◽  
Atomic Absorption Spectrophotometry ◽  
Arsenic Content ◽  
Toxic Substances ◽  
Residential Areas ◽  
Entire Area ◽  
Mining Areas

Introduction. Intensive exploration and processing of mineral raw materials in the Trans-Baikal territory has caused the accumulation of considerable amount of industrial mining waste with high content of chemical elements of different classes of hazard. Currently 33 tailings storage facilities (TSF) accumulating approximately 3 milliard tons of different industrial waste are located in the territory of the region. The aim of the research is the hygienic assessment of soil contamination in the residential areas adjacent to TSFs. Material and methods. Atomic absorption spectrophotometry method was used for the determination of heavy metals. The study presents the results of analyses of 444 samples of gross content of lead, zinc, copper, mercury, arsenic, and cadmium in the soil of Khapcheranga, Sherlovaya Gora, Kadaya, Vershino-Darasunsky, and Vershino-Shakhtaminsky mining villages throughout the duration of 2012 - 2015. Results. During the period of the study the total value of soil contamination with Zc calculated by the median concentrations in Khapcheranga Village amounted to 4.7 6.9, in Vershino-Shakhtaminaky - to 6.7 8.8, which corresponds to the «allowable» level of the contamination. Zc calculation by maximum concentrations has shown the soil to be referred to the category from “moderately dangerous” to “extremely dangerous”; this value in Khapcheranga Village amounted to 48.7 - 235.3, in Vershino-Shakhtaminsky Village - to 23.76 - 164.8. Discussion. In the residential areas the allowable degree of soil contamination was determined to be predominantly observed; Khapcheranga and Vershino-Shakhtaminsky villages are the exceptions. The results of the assessment give the evidence of tge increased lead, cadmium and arsenic content throughout the entire area of the villages, while the highest levels of accumulated toxic substances are registered in the areas located near the TSF Conclusion. Thus, several zones of natural and anthropogenous contamination with increased concentrations of heavy metals and arsenic have been formed in the Trans-Baikal Territory. This dictates the need to study the influence of geochemical anomalies on the health of population.

scholarly journals Analizy Space Syntax wobec zjawiska segregacji społecznej i izolacji przestrzennej obszarów mieszkaniowych

2020 ◽  
pp. 13-18
Author(s):  
Justyna Olesiak
Keyword(s):  
Public Space ◽  
Urban Design ◽  
Urban Areas ◽  
Space Syntax ◽  
Residential Areas ◽  
Syntax Analysis ◽  
The Face ◽  
Urban Analysis ◽  
The Impact ◽  
The City

W wielu obszarach miejskich widoczna jest skrajna segregacja przestrzeni publicznej oraz fakt, że wiele dzielnic mieszkaniowych jest przestrzennie odizolowanych od miasta jako całości. Ponieważ tradycyjne metody analiz urbanistycznych dają słabe wytyczne w tym kontekście, podjęta zostanie próba ujęcia problemu i odmiennego podejścia do segregacji w projektowaniu urbanistycznym. Niniejszy artykuł bada, w jaki sposób teorie i metody analizy Space Syntax mogą przyczynić się do stworzenia bardziej dopracowanych opisów relacji przestrzennych w różnych dzielnicach i całym mieście. Przyjęto metodę badawczą: analizę literatury fachowej (krajowej i zagranicznej) oraz dostępnych publikacji. Analiza urbanistyczna oparta na teorii Space Syntax umożliwia wykazanie zasadniczych różnic strukturalnych między dzielnicami i określenie wpływu form urbanistycznych na zalety przestrzenne różnych obszarów miasta. Otwiera to nowe możliwości rozwiązania problemu segregacji w zakresie projektowania urbanistycznego oraz sformułowanie bardziej skutecznych interwencji antysegregacyjnych. Space Syntax analysis in the Face of the Phenomenon of Social Segregation and Spatial Isolation of Residential Areas In many urban areas there is an observable extreme segregation of public space, in addition to the fact that many housing districts are spatially isolated from the city as a whole. As traditional methods of urban analysis provide poor guidelines in this context, an attempt to investigate this problem and present a different approach to segregation in urban design was made. This paper presents an investigation about how Space Syntax theories and methods can contribute to creating more detailed descriptions of spatial relationships in different districts and in the entire city. The research method employed was an analysis of the literature (both domestic and trade). Space-Syntax-based urban analysis enables demonstrating significant structural differences between districts and to determine the impact of urban forms on the spatial advantages of different areas of the city. It provides new opportunities to address segregation in urban design and formulate more effective anti-segregation interventions.

scholarly journals The dynamics of population distributions in cities based on daily mobile phone operations: A case study of some Moravian cities

2021 ◽  
Vol 29 (1) ◽  
pp. 71-86
Author(s):  
Gabriel Kopáčik ◽  
Antonín Vaishar ◽  
Eva Šimara
Keyword(s):  
Mobile Phone ◽  
Urban Areas ◽  
Urban Structure ◽  
Residential Areas ◽  
Urban Structures ◽  
Population Distributions ◽  
Dynamics Of Population ◽  
The City ◽  
Permanent Residents

Abstract Analyses of the changes in the presence of persons in different central and residential parts of urban areas are subject to evaluation in this paper. Case studies of the cities of Brno, Ostrava and Zlín during the day and night are highlighted. Data from a provider of mobile phone services were used for the analyses. It appears that the data can be important for the comparison of different urban structures. The results demonstrate that the organisation of urban structure affects the number of visitors and thus the area attractiveness. It was confirmed that the number of mobile phone users in the city cores is higher than the number of permanent residents. The greatest differences between the day and night in the city cores were found in Brno, a concentric city with the most important central functions among the cities studied. Differences between the day and night in residential areas were not as large as expected. City neighbourhoods in Brno showed some specific rhythmicity.

scholarly journals Determination of the Level of Snow Cover Pollution with Heavy Metals within the City of Kovrov Boundaries

2014 ◽  
pp. 69-76
Author(s):  
Keyword(s):  
Heavy Metals ◽  
Snow Cover ◽  
Chemical Elements ◽  
Iron Accumulation ◽  
Winter Period ◽  
Vladimir Oblast ◽  
The City

The paper presents the outcomes of the investigation of heavy metals and iron accumulation in the Kovrov (Vladimir Oblast) snow cover. On the basis of snowmelt waters’ analysis a calculation of the chemical elements input into snow cover over the winter period has been carried out.

scholarly journals Assessing public participation in water conservation and water demand management in water stressed urban areas: Insights from the City of Gweru, Zimbabwe

2016 ◽  
Vol 1 (8) ◽  
pp. 30
Author(s):  
WINMORE KUSENA ◽  
Sumaiya Desai ◽  
Beckedhal Heinz ◽  
Chemura Abel
Keyword(s):  
Water Conservation ◽  
Urban Areas ◽  
Local Authority ◽  
Demand Management ◽  
Household Survey ◽  
User Participation ◽  
Residential Areas ◽  
Water User ◽  
Water Users ◽  
The City

<p>The paper investigates the level of water user participation in water conservation and demand management in Gweru. Data was solicited from a combination of user opinion and key informants selected from the local authority and citizen representative groups. A household survey including 489 residents was carried out in the different categories of residential areas in the city. Several water conservation and demand management measures were identified. However compliance with the measures was poor. The majority of respondents (98%) were never consulted and did not participate in water decisions. Only a few respondents (2%) participated in water conservation and demand management consultation meetings, an indicator that decision-making was the sole prerogative of the local authority. Awareness in water conservation across residential suburbs was incredibly low irrespective of the socio-economic status of high literacy level recorded in the city. To explain the anomaly, respondents reported low participation (p = 0.078) in water conservation trainings which may have translated into limited conservation literacy. The findings also revealed poor communication channels between the local authority and residents such that water users felt disrespected and disregarded. Unfortunately no initiatives were in place to encourage and enable water user participation in water management. Water conservation and demand management will remain a problem in Gweru as long as there is no point of participation for various stakeholders, especially water users. Active participation channels must be opened in order to create water conservation awareness and good relations for effective participation and sustainable water service delivery.</p>

Law and War in the Virtual Era

2009 ◽  
Vol 103 (3) ◽  
pp. 409-445 ◽  
Author(s):  
Jack M. Beard
Keyword(s):  
World War Ii ◽  
Urban Areas ◽  
The United States ◽  
Limited Information ◽  
Residential Areas ◽  
Military Technology ◽  
Legal Principles ◽  
Legal Constraints ◽  
Effects Of War ◽  
The City

Since the first attempts by states to use law to regulate armed conflict, legal constraints have often failed to protect civilians from the adverse effects of war. Advances in military technology have usually not improved this situation and have instead made law even more distant and less relevant to the suffering of civilians in wartime. The massive, indiscriminate incendiary bombing campaigns against major urban areas in World War II spoke volumes about the irrelevance of fundamental legal principles and rules designed to protect civilian populations in wartime. Law and lawyers were in fact far removed, physically and operationally, from the cockpits of the United States bombers flying over Tokyo, whose aircrews were focused on surviving their missions. They struggled with limited information about their assigned targets and conducted their operations with rudimentary preflight instructions that directed them, for example, to avoid destroying the palace of the Japanese emperor but left them free to submerge entire residential areas of the city in a sea of flames.

Development of Non-Motorized Infrastructure Network in Oradea City Using Dijkstra Algorithm in ArcGIS

2015 ◽  
Vol 809-810 ◽  
pp. 1067-1072 ◽  
Author(s):  
Anamaria Ilie ◽  
Cristina Ștefănică ◽  
Oana Dinu ◽  
Florin Ruscă ◽  
Ştefan Burciu
Keyword(s):  
Urban Infrastructure ◽  
Transport Infrastructure ◽  
Health Improvement ◽  
Dijkstra Algorithm ◽  
Residential Areas ◽  
The Public ◽  
Infrastructure Networks ◽  
Local Municipalities ◽  
Local Budget ◽  
The City

In this paper it is developed a location model for the infrastructures dedicated to non-motorized movements by bike in Oradea city, using ArcGIS geographic and information system [3]. They are taken into consideration the movements made by the target people – alternating movements (from home to school) and optional movements (made for recreation), the densities in residential areas, the type of the city arteries and the mobility need of the target people (in this case – young people aged between 15 and 25) in order to design two structures of the transport infrastructure networks (one for the alternating movements and the other for the optional movements), structures which will be realized on the actual frame of the existing transport infrastructure in Oradea city. Using Dijkstra algorithm, the minimal routes for the movements related to the alternating mobility, but also for the movements specific to the optional mobility are determined. Further on the most used arteries in the two structures of urban infrastructure networks are determined. The paper suggests as a solution the structure of the network for the non-motorized movements and also those arteries that must be used for its development, that guarantee gains for the target people (time), for the main operators who exploit the motorized systems, for the local budget of the local municipalities (less funds to sustain the public services) and especially for the environment and people’s health (attenuation of noxious and phonic pollution, reduction of the accidents’ number and health improvement).

scholarly journals Differentiation of Particulate Matter Sources Based on the Chemical Composition of PM10 in Functional Urban Areas

Atmosphere ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 583 ◽  
Author(s):  
Dusan Jandacka ◽  
Daniela Durcanska
Keyword(s):  
Particulate Matter ◽  
Urban Areas ◽  
Road Traffic ◽  
Chemical Elements ◽  
Winter Season ◽  
Fine Fraction ◽  
Gravimetric Method ◽  
Coarse Fraction ◽  
Multivariate Statistical ◽  
The City

Urban air quality is continuing to deteriorate. If we want to do something about this problem, we need to know the cause of the pollution. The big problem, not only in Europe, is the high concentrations of particulate matter (PM) in the urban environment. The origin of these particles can be different, including combustion, transport, industry, natural resources, etc. Particulate matter includes a large amount of the finest PM fractions, which can remain in the air for a long time, easily enter respiratory tracks, and damage human health. Particulate matter is also produced by the abrasion of different parts of roads and vehicle fleets and from resuspension road dust, which concerns matter with larger aerodynamic diameters. For this reason, we carried out a series of measurements at various measuring stations in Žilina, Slovakia, during different measuring seasons. The main objective was to find out the diversity of particulate matter sources in Žilina. The search for the particulate matter origin was carried out by particulate matter measurements, determination of the particulate matter fraction concentrations (PM10, PM2.5, and PM1), an investigation on the effect of secondary factors on the particulate matter concentrations, chemical analyses, and multivariate statistical analyses. Varied behavior of the particulate matter with respect to the measurement station and the measurement season was found. Differences in the concentrations of investigated chemical elements contained in the PM were found. Significant changes in the concentrations of particulate matter are caused not only by primary sources (e.g., road traffic in the city of Žilina), but mainly by the negative events (combination of air pollution sources and meteorological conditions). Maximum concentrations of particulate matter PM10 were measured during the winter season at the measuring station on Komenského Street: PM10 126.2 µg/m3, PM2.5 97.7 µg/m3, and PM1 90.4 µg/m3 were obtained using the gravimetric method. The coarse fraction PM2.5-10 was mainly represented by the chemical elements Mg, Al, Si, Ca, Cr, Fe, and Ba, and the fine fraction PM2.5 was represented by the chemical elements K, S, Cd, Pb, Ni, and Zn. Road transport as a dominant source of PM10 was identified from all measurements in the city of Žilina by using the multivariate statistical methods of principal component analysis (PCA) and factor analysis (FA).

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