Wyniki wyszukiwania - BazTech

1

Non-contact eddy current conductivity measurements as an effective tool for evaluating aluminum alloys in aircraft

Uchanin Valentyn

Transactions on Aerospace Research

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2024

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Nr 3 (276)

43--57

EN

Aluminum alloys (AAs) are pivotal materials in modern aircraft due to their superior mechanical properties and low weight. The structural integrity of these alloys, crucial for aircraft safety, heavily depends on heat treatment processes that alter their mechanical characteristics. Nondestructive evaluation (NDE) techniques, such as eddy current (EC) conductivity measurements, play a vital role in assessing these alloys throughout their lifecycle. EC methods enable the measurement of electrical conductivity, a structure-sensitive parameter that correlates with mechanical properties affected by heat treatments and operational stresses. This paper reviews the application of EC conductivity measurements in the aerospace industry, focusing on their role in assessing AA structural integrity. It discusses how EC methods can penetrate non-conductive coatings, crucial for in-service measurements without surface removal. Recent developments include a novel small-size EC probe and signal processing algorithms aimed at enhancing sensitivity to conductivity changes through dielectric coatings, up to 0.5 mm thick, commonly found in aircraft structures. Key findings include analyses of specific electrical conductivity (SEC) changes in AAs due to heat treatment deviations and long-term operational stresses, crucial for predicting residual life and maintaining safety standards. Case studies on aircraft wing skins and helicopter rotor blades demonstrate the practical application of EC conductivity meters in identifying critical damage zones. The methodology proves effective in evaluating localized degradation based on SEC distributions, thereby enhancing maintenance efficiency and aircraft safety. Overall, this research underscores the significance of EC conductivity measurements in advancing NDE practices for AAs in aircraft applications. The methodologies and findings presented aim to improve safety, durability assessment, and maintenance efficiency in the aerospace industry.

2

Comparative Analysis and Kinetic Modeling of Marbofloxacin Degradation via Electro-Fenton and Biodegradation Optimization

Hakami Rabab A., Yahya Muna Shueai, Bakkali Mohamed, Hakami Afnan A.

Rocznik Ochrona Środowiska

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2024

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Tom 26

638--657

EN

In the quest for sustainable water purification methods, electrochemical Advanced Oxidation Processes (AOPs) emerge as pivotal strategies against organic pollutants. This study delves into the efficacy of the Electro-Fenton process, a distinguished AOP that leverages the in-situ generation of hydroxyl radicals (•OH) via the electrochemical reduction of oxygen. By conducting systematic experiments in deionized water, we evaluate the influence of catalyst concentration, applied current density, and cathode material selection on the degradation kinetics of marbofloxacin – a model pharmaceutical pollutant. Employing advanced statistical and kinetic modeling, our investigation reveals critical insights into the process dynamics, uncovering the nuanced interplay between operational parameters and degradation efficiency. The findings substantiate the Electro-Fenton process as an environmentally advantageous and effective solution for water decontamination and advancing the field of water purification technology.

3

Ocena stanu zachowania powłok ochronnych na stalowych elementach konstrukcyjnych w istniejącym moście wantowym

Stryszewska Teresa, Dudek Marta, Kańka Stanisław, Gwoździewicz Piotr, Schoenowitz-Żuradzka Sylwia

Przegląd Budowlany

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2024

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R. 95, nr 6

129--132

PL

W artykule przedstawiono wyniki badań in situ oraz laboratoryjnych niemetalicznych powłok ochronnych zabezpieczających stalowe elementy konstrukcyjne istniejącego i obecnie eksploatowanego mostu wantowego. Zakres badań in situ obejmował określenie stopnia zardzewienia, skredowania oraz przyczepności tych powłok. Natomiast badania laboratoryjne obejmowały obserwacje mikrostrukturalne pobranych powłok malarskich. Uzyskane wyniki badań wykazały całkowitą degradację przedmiotowych powłok ochronnych.

EN

The article presents the results of in situ and laboratory testing of non-metallic protective coatings protecting the for the structural steel components of the existing and currently operated cable-stayed bridge. The scope of the in situ testing included determining the degree of rusting, chalking and adhesion of these coatings. Laboratory testing included microstructural observations of the paint coatings taken. The obtained test results showed complete degradation of the protective coatings in question.

4

Rozpoznanie i przeciwdziałanie zagrożeniom funkcji gleb – wybrane aspekty podstawowej wiedzy dla decydentów

Chojnicki Józef, Kostecka Joanna

Polish Journal for Sustainable Development

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2024

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T. 28, nr 1

45--59

PL

Dobrej jakości, żyzne gleby są podstawowym elementem środowiska przyrodniczego, w glebie zaczyna się i kończy proces krążenia materii i przepływu energii. Jest ona miejscem gdzie złożone elementy przyrody ożywionej (bioróżnorodność) i nieożywionej spełniają liczne świadczenia ekosystemowe dla wieloelementowej i wielopoziomowej biosfery - w tym człowieka. Zdrowa gleba to zdrowy pokarm i zdrowy człowiek. Gleby, będąc także środkiem infrastruktury dla produkcji rolnej, mają ogromne znaczenie społeczno-gospodarcze. Celem opracowania było pokazanie wybranych charakterystyk gleby i jej roli a także określenie podstawowych działań koniecznych do podjęcia w celu spowolnienia zagrożeń dla jej złożonych funkcji.

EN

Good quality, fertile soils are a fundamental element of the natural environment, in the soil the process of matter circulation and energy flow begins and ends. It is a place where complex elements of animate nature (biodiversity) and inanimate nature provide numerous ecosystem services for the multi-element and multi-level biosphere - including humans. Healthy soil means healthy food and a healthy human. Soils, being also a means of infrastructure for agricultural production, are of great socio-economic importance. The aim of the study was to show selected characteristics of soil and its role, as well as to determine the basic actions necessary to be taken in order to slow down threats to its complex functions.

5

Impacts of the Petrochemical Industries on Groundwater Quality

Alzboon Kamel, Abu Salem Zaydoun, Alshboul Zeyad, Al-Tabbal Jalal, Al Tarazi Eid, Alrawashdeh Khalideh

Journal of Ecological Engineering

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2024

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Vol. 25, nr 8

286--299

EN

Global interest in groundwater resource management is significant, with petrochemical industrialization identified as a potential source of groundwater pollution. Petrochemical industrial processes cause significant impacts on groundwater quality through the discharging of highly contaminated waste with oil and chemicals. This study aims to determine the impact of the heavy petrochemical industrial city of Jubail Saudi Arabia on groundwater quality and identify special sources of pollution using a statistical approach. Samples from 47 groundwater wells were collected and analyzed for 23 indicators, mainly chlorinated hydrocarbons, 1,1-olefin hydrocarbons, vinyl chlorides, 1,1,2-trichloroethylene and chloroform, 1,2-dichloroethylene, chlorobenzene, and benzene. The results were compared with permissible standard limits to identify the level of exceedance. The results showed an exceedance in the concentrations of chlorinated hydrocarbons, total petroleum hydrocarbons, 1,1-dichloroethane, 1,2-dichloroethane, 1,1-trichloroethane, and vinyl chloride more than ten times above the permissible limits of these concentrations. The study revealed the high impact of the petrochemical industries on groundwater quality. Since the current monitoring program depends only on annual sampling of groundwater, there has been a recommendation to install an online groundwater monitoring system to conserve water quality and achieve sustainable management.

6

Biostimulator for Arid Pastures in the South of Kazakhstan

Baymagambetova Zhanara, Kedelbayev Bakhytzhan, Seitkarimov Amir, Kalymbetov Gani, Sapargaliyeva Bayan

Journal of Ecological Engineering

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2024

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Vol. 25, nr 1

131--145

EN

Long-term unsystematic use of near-settlement pastures in the desert zone of South Kazakhstan had a negative impact on the physic-chemical parameters of Calcisol. Excessive grazing leads to trampling of soil and reduction of soil fertility. The aim of the study was to develop a technology to improve the productivity of degraded near-settlement pastures. The tasks of the research were to determine the effect application of environmental safe biostimulator and biofertilizer on microbial communities, the content of carbon and phosphorus in the soil, the effectiveness of biostimulator application on degraded pastures in order to increase green mass. For this purpose, geobotanical, bacteriological and helminthological methods of analysis were used. The result of the used proposed technology is the activation of soil microorganisms, which leads to the prevention of degradation of arid pastures. The results of the conducted research contribute to the introduction of a better technology to increase the productivity of arid near-settlement pastures. Statistical analysis of the experiments showed that all manipulations on soil microorganisms increase the number and green mass of arid plants.

7

16S rRNA Gen Analysis of Plastic Destruction Bacteries, South Sumatra, Indonesia

Meiyerani Jeni, Melki Melki, Aryawati Riris, Rozirwan Rozirwan, Ningsih Ellis Nurjuliasti, Wulandari Tuah Nanda Merlia, Nugroho Redho Yoga

Journal of Ecological Engineering

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2024

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Vol. 25, nr 3

85--95

EN

Rivers are the main route for plastic entering the ocean, including the Musi River Estuary. Characteristics of bacteria that are able to degrade plastic waste through polymerase enzymes. The aim of this research is to determine the ability of bacterial isolates to degrade plastic and identify the types of bacteria that degrade plastic waste. This study used plastic bottles, nylon nets, and snack wrappers as objects for degradation measurement. Identification analysis of the 16S rRNA gene using universal PCR primers for bacteria in the form of forward primer 63f (5’-CAG GCC TAA CAC ATG CAA GTC-3’) and reverse primer 1387r (5’-GGG CGG WGT GTA CAA GGC-3’). The type of bacteria with the highest percentage of degradation over 20 days, amounting to 7.75%, was Bacillus amyloliquefaciens. Identification of types of plastic degrading bacteria using 16S rRNA gene analysis showed 11 bacteria with 8 types including Staphylococcus hominis, Pseudomonas aeruginosa, Acinetobacter sp., Acinetobacter baumannii, Acinetobacter variabilis, Shewanella sp., Micrococcus luteus, and Bacillus amyloliquefaciens. The percentage of plastic degradation by bacteria is relatively small, so it is best to look for times where there is potential for bacterial growth.

8

Study and Characterization of Biofoam From Bagasse (Saccharum officinarum L.) with Chitosan Addition

Rismawati Rismawati, Taba Paulina, Fahruddin Fahruddin

Ecological Engineering & Environmental Technology

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2024

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Vol. 25, iss. 7

11--21

EN

The increase in styrofoam waste can cause environmental pollution, therefore efforts are required to reduce the use of styrofoam. One of them is by replacing it with biofoam made from agricultural industry waste such as bagasse because if this garbage is not used, it may cause environmental issues. Bagasse has a potential to be utilized as biofoam. This research aims to extract cellulose from bagasse through delignification and bleaching processes, as well as synthesize and characterize biofoam using cellulose from bagasse with the addition of chitosan variations of 2, 3.5, 5, and 6.5 g. The stages of this research are the extraction of cellulose from bagasse waste with FTIR and XRD analysis, making biofoam and biofoam characterization tests. The results of cellulose extraction from bagasse are O-H, C-H and C-O functional groups that indicate the presence of cellulose. In XRD analysis, the cellulose sample has a crystallinity index of 70.74%. Biofoam based on sugarcane bagasse cellulose with the addition of 2 g chitosan has the best characterization, which has a density of 1.23 g/mL, with a water absorption value of 46.03% at 24 hours immersion and biodegradability of 20.68% for 28 days.

9

Silica-Magnetite Composite as an Eco-Friendly Adsorbent for Aqueous Tetracycline Removal – Kinetic and Isotherm Studies

Karina Sofyatuddin, Perdana Adli Waliul, Prajaputra Vicky, Isnaini Nadia, Nuufus Putri Hayyatun, Bismi Audia

Ecological Engineering & Environmental Technology

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2024

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Vol. 25, iss. 1

82--92

EN

Silica and magnetite have been recognized as emerging and effective environmentally-friendly pollutant removers. In this study, the effectiveness of silica/magnetite (SM) composites derived from local beach sand were developed and evaluated as an environmentally friendly adsorbent for taking up tetracycline from water. The formation of SM composites was verified through characterization performed using Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), and Scanning Electron Microscope (SEM) analysis. Two key parameters, kinetics and isotherms, were investigated to find the best condition for tetracycline adsorption using SM composites. In the kinetic adsorption studies, the pseudo-first-order, with correlation coefficients (R2 > 0.99) higher than those of the pseudo-second-order and Elovich models, was performed to be the best-fitting model due to the close alignment between the experimental and theoretical data. The non-linear Langmuir isotherm model offered the most accurate fit (R2 = 0.954, root-mean-square-errors = 1.505) compared to the Freundlich model, signifying that the adsorption process takes place on a uniform surface where the adsorbate is distributed in monolayers. In the present study, the maximum adsorption capacity of tetracycline onto SM composite reached 29.955±4.165 mg/g for 24-hour contact time with an adsorption rate constant of 0.415±0.050 min-1. In conclusion, the developed environmentally conscious composite demonstrates the potential to be an effective adsorbent with remarkable tetracycline removal properties while also providing valuable insights for further research.

10

Assessment of oil change intervals in urban buses based on the selected physicochemical properties of used engine oils

Gołębiowski Wojciech, Zając Grzegorz, Sejkorová Marie, Wolak Artur

Combustion Engines

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2024

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R. 63, nr 1

15--23

EN

The paper presents the results of the analysis of selected physicochemical parameters of engine oils after their use. The oils were obtained both from urban buses belonging to the fleet of a municipal transport company in Lublin, Poland but also from the city of Pardubice in the Czech Republic. Five samples of 10W40 semi-synthetic oil and four samples of 5W30 synthetic oil were tested. Kinematic viscosity at 40°C and 100°C, oxidation, nitration, sulfonation, total acid number (TAN), total base number (TBN), remaining antiwear additives, water content and glycol content, were assessed using infrared spectroscopy (FTIR). The tests were performed on the basis of the ASTM E2412-10 standard. The article also presents the exceedance of the limit values results for the selected parameters. The results of the research can be used in optimizing the engine oil change interval so that the decision to replace the oil is justified both in economic and technical terms, taking into account the need to maintain the service life of the bus.

11

Eco-friendly based stability-indicating HPTLC technique for the determination of Escitalopram and Etizolam by employing quality by design approach

Perumal Durgadevi, Krishnan Manikandan, Lakshmi K.S.

Acta Chromatographica

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2024

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Vol. 36, no. 2

156--167

EN

The two chemical components Escitalopram (ESC) and Etizolam (ETZ) are beneficial for the health of individuals because it helps to treat anxiety. The study mainly illustrated that a green approach is essential in the medical sector with the help of “Green Analytical quality by design”. According to AQbD, the techniques of HPTLC have become eco-friendly, and decided to use “ESC” and “ETZ”. Hence, ethanol and phosphate buffer pH 3.5 adjusted with 1% “orthophosphoric acid”. After the retardation factor, the product ESC was found at 0.34 min and ETZ was found at 0.53 min. The linearity of ETZ the range varies from 300 to 1800 μg mL1 and for ESC it varies from 100 to 600 μg mL1. The validation parameter of R2 Values ranged from 0.9997 to 0.9994 for both ESC and ETZ. The study also demonstrated that different other methods were also useful for the medical sector to make it more convenient and eco-friendly. Some of those approaches are “GAPI”, “AGMS”, “NEMI”, and “AGREE”. The outcome of the study helped to find that the technique “HPTLC” is a green analytic design that helps to maintain the stability of the medicine and it was also approved as a quality design and also a novel approach in the pharmaceutical sector.

12

Unijne rozporządzenie w sprawie wylesiania

Jastrzębski Michał

Przegląd Papierniczy

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2023

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R. 79, nr 1

32

PL

W listopadzie 2021 r. Komisja Europejska przyjęła wniosek dotyczący rozporządzenia w sprawie udostępniania na rynku unijnym, jak również wywozu z Unii niektórych towarów i produktów związanych z wylesianiem i degradacją lasów, zwane rozporządzeniem w sprawie wylesiania.

13

Biodegradowalne, przewodzące i elastyczne podłoża dla urządzeń opto-elektronicznych

Marzec Monika, Fryń Patryk, Lalik Sebastian, Bogdanowicz Krzysztof, Iwan Agnieszka

Przegląd Elektrotechniczny

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2023

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R. 99, nr 10

229--232

PL

Dokonano analizy porównawczej wpływu zawartości poszczególnych składników na wybrane właściwości warstw hybrydowych dwu- i trójskładnikowych na bazie trzech polimerów biodegradowalnych z domieszką jednościennych nanorurek węglowych (SWCN) i ciekłego kryształu 5CB. Pokazano, że najlepsze właściwości dla zastosowań w opto-elektronice jako biodegradowalna elektroda wykazuje kompozyt L,D-PLA:5CB:SWCN (10:1:0,5) o dużej elastyczności oraz dobrej stabilności termicznej.

EN

A comparative analysis of the impact of the content of individual components on selected properties of two- and three-component hybrid layers based on three biodegradable polymers with an admixture of single-walled carbon nanotubes (SWCN) and 5CB liquid crystal was carried out. The best one for applications in opto-electronics as a biodegradable electrode turned out to be the L,D-PLA:5CB:SWCN (10:1:0,5) composite with high flexibility and good thermal stability.

14

Compressibility behavior of conditioned sandy clay considering the physical degradation of foam: tunneling issue

Selmi Mœz, Alassaf Yahya, Kacem Mariem, Jamei Mehrez

Journal of Sustainable Mining

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2023

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Vol. 22. iss. 4

316--331

EN

Surfactants in the form of liquid foam are commonly used for ensuring the fluidity of conditioned soil during shield tunneling in mining zone. The compressibility can be significantly affected, depending on the percentage of fine soil. Thus, this paper investigates the compressibility of foam-conditioned fine soil. Oedometric tests as a function of the percentage of foam have been performed. Foam's stability was analyzed, considering a laboratory soil made from 40% kaolinite and 60% of sand and mixed with a foaming agent based on an anionic surfactant. Experimental results showed that the foam stability was manifested through a reduction of the foam's volume followed by liquid drainage, under loading and due to the foam's physical degradation over time. The compressibility increases with the adding rate of the foam in the soil. Therefore, consolidation and foam's degradation over time are two factors that allow the recovery of the compressibility property of conditioned soil.

15

Synthesis and Characterization of Photocatalyst Nanocomposite for the Degradation of Organic Pollutants in Wastewater

Ratnawulan, Rahmadhani Detty, Fauzi Ahmad, Jonuarti Riri, Supian Faridah Lisa, Jhora Fadhila Ulfa

Journal of Ecological Engineering

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2023

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Vol. 24, nr 12

388--396

EN

Various efforts can be made to obtain clean water in the environment by utilizing semiconductor technology. This study aims to inform the synthesis and characterization of MnO2/CuO/Fe2O3 photocatalyst for crystal violet degradation in wastewater. Nanocomposite was synthesized through a sol-gel process with three semiconductor materials doped. X-ray diffraction (XRD) was employed to analyze the nanocomposite structure and determine crystal size. Fourier transform infrared (FTIR) was used to provide functional groups in the nanocomposite. A scanning electron microscope (SEM) can characterize surface morphology and particle size. The results of the SEM show that an increase in sintering temperature causes the smallest particle sizes to be 54.79 nm. The result of characterization using the ultraviolet-visible (Uv-Vis) spectrophotometry analysis the most effective band gap value in photocatalyst activity was 1.36 eV. The optimum percent of degradation MnO2/CuO/Fe2O3 catalyst was 50.40% for the sample at a temperature of 400 °C under irradiation with sunlight for six hours. Test results show that increased sintering temperature increased the photocatalytic activity.

16

Formation of the Geometry of the Side Slopes from the Geotechnical Aspect for the Recultivation of the Degraded Area from Coal Mining

Ahmeti Hysen, Behrami Ragip, Hetemi Ilir, Qorri Arton

Journal of Ecological Engineering

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2023

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Vol. 24, nr 1

195--204

EN

The impact of coal exploitation on the geological layers of the earth is closely related to mining activities and this activity has been quite pronounced considering the topographical changes of the green space together with the vegetation that would directly affect the degradation of agricultural lands. The soil is the environmental medium with irreparable damages from the activity of coal exploitation for the location where the Sibovc mine is located, which is characterized by the physical disappearance of the pedological profile of the soil such as the ecosystem, etc. and that represents the most serious form of damage to her. The purpose and importance of this paper is the biological recultivation of the area degraded by coal exploitation, based on the height of the scale H and the angle α° of the slope of the clay layers with the safety factor allowed for determining the humus layer for the cover of the degraded area, physical and chemical analyzes were performed based on the samples that were taken in the open profiles in the field, it was planned to plant saplings (trees) that will have a positive effect on the prevention of soil erosion, the enrichment of the air with O2, the reduction of the amount of CO2 in the air, the prevention of the distribution of dust in the environment, the size of the passage and from the geotechnical point of view, the prevention of humus soil landslides. The planned recultivation of the plot will start from the level of quota 570, 580 and 590 m, covering an area of about 17 hectares.

17

Determination of the Degradation Degree of Pasture Lands in the West Kazakhstan Region Based on Monitoring Using Geoinformation Technologies

Yesmagulova Bayan Zhumabaevna, Assetova Assem Yurievna, Tassanova Zhadyra Baizhanovna, Zhildikbaeva Aizhan Naskenovna, Molzhigitova Dinara Kumarbekovna

Journal of Ecological Engineering

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2023

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Vol. 24, nr 1

179--187

EN

Land degradation, including pasture lands is one of the global problems. Currently, one of the most urgent problems of the West Kazakhstan region is the preservation and restoration of the vegetation cover of pasture lands. To date, large areas of the region have been occupied by agricultural land. Several main reasons negatively affect agriculture, one of which is land degradation associated with anthropogenic impact in terms of the irrationality of land use. Thus, to preserve the biodiversity of the pastures of the West Kazakhstan region, it is necessary to fully study the projective cover of the vegetation, determine the dominant plant species, and also monitor the condition of pastures to prevent land degradation on time by conducting land and forest improvement activities. The study aimed to carry out a phyto-ecological assessment of degraded pastures of the Karatobinsky district of the West Kazakhstan region using geoinformation technologies and field study results. The paper presents the results of desktop decoding of high-resolution satellite images and ecological profiling of the studied territories. Decoding features of landscape types allowed making a preliminary map of landscape contours. The use of this technique makes it possible to monitor the condition of degraded pasture lands in a short time and justify the organization of pastures with a regulated grazing system in the study area.

18

Assessment of the Impact of a Recultivated Landfill on the Soil Environment

Pusz Agnieszka, Wiśniewska Magdalena, Rogalski Dominik, Staśkiewicz Marcin

Journal of Ecological Engineering

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2023

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Vol. 24, nr 12

407--418

EN

Recultivated landfills, despite remedial actions, may pose a threat to human health and the environment, and therefore require long-term monitoring. The aim of the work was to investigate the impact of recultivation treatments on changes in the physical and chemical properties of soils in the vicinity of a landfill for waste other than hazardous and neutral. In order to carry out the work, drillings were made around the tested landfill, from which samples were taken and selected physical and chemical properties were determined, including substances causing risks that are particularly important for the protection of the earth’s surface. The tested soils were characterized by a neutral and alkaline reaction and a high degree of saturation of the sorption complex with exchangeable basic cations after the use of dust and ash as a recultivation material. Leaks and leachate accumulation were found in the northern part of the facility. The permissible metal contents for industrial areas (group IV) and forest areas (group III) were not exceeded. In the northern part of the landfill area, the permissible content of cadmium was exceeded, while in the southern part, the permissible content of zinc, lead and cadmium was exceeded for agricultural areas (group II). The use of dust and ashes for the recultivation of the landfill in its southern part limited the migration of pollutants deeper into the profile and resulted in an improvement in the physical and chemical properties of the tested soils. The conclusion stated that there is a need to undertake further remediation activities and monitoring studies in order to minimize potential migration of pollutants into the soil and water environment, posing a threat to human health and the environment.

19

Presence of MNPs in Water Environment-pathways of Degradation and Impact on Organisms

Zając Marcin, Kotyńska Joanna, Naumowicz Monika

Civil and Environmental Engineering Reports

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2023

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Vol. 33, no. 4

106--122

EN

In recent years, micro- and nanoplastics (MNPs) in the natural environment have become a severe issue. Therefore, it seems significant to be knowledgeable on the topic. The purpose of the literature review presented here is to describe the general characteristics of plastic particles, their main sources, degradation mechanisms, and the impact of plastic particles on individual systems of the human body. The usefulness and scale of distribution of plastics worldwide is shown, considering the increase in their production in recent years. Up-to-date literature indicates that they may influence the development of cancer, e.g. stomach, liver, or colon cancer. Scientists associate microplastics with the development of cardiovascular and immunological diseases. They also draw attention to the temporal correlation between the increased incidence of the above-civilization diseases and the increased environmental contamination with microplastics in recent decades.

20

Spatial and temporal analysis of landscape dynamics in the Kostanay region under an-thropogenic impacts

Ozgeldinova Zhanar, Mukayev Zhandos, Zhanguzhina Altyn, Bektemirowa Assel, Ulykpanova Meruyert

Archives of Environmental Protection

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2023

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Vol. 49, no. 4

80--94

EN

The aim of the work is to develop a method of landscape dynamics under anthropogenic impact. The developed methodology is tested on the territory of Kostanay region, which is one of the main regions of mining industry development, with a focus on iron ore mining and crop production. Space images and field survey results are used as input materials. In general, the work consists of the following six stages: the first stage includes the selection and processing of space images, the second stage includes the calculation of indices based on data from different channels of space images, the third stage includes field work aimed at collecting information for verification of the obtained results on the basis of RS data, the fourth stage includes the calculation of range values, the fifth stage comprises verification of the obtained indices, and the final sixth stage deals with calculation of the integral index of landscape degradation degree and analysis of landscape dynamics under anthropogenic impacts. The calculation of the integral indicator of the degree of degradation of the natural environment of the Kostanay region, based on the degradation of each indicator in the conditions of anthropogenic impact, allowed for identification of landscapes with different degrees of degradation (from weak to very strong). The research confirmed that landscapes with a high degree of degradation under anthropogenic impact are confined to semi-desert landscapes in the south of the study region. The degradation of these landscapes is associated not only with anthropogenic impacts but also with natural and climatic features that influence the development of landscape pollution processes. On the contrary, landscapes with a weak degree of degradation correspond to the forest-steppe and steppe zones, characterized by a high level of economic development and resistance to anthropogenic impacts. The verification of the obtained indicators by the values of the remaining 25% of field points determines the reliability of the obtained results, ranging from 87% to 92%, confirming the correct choice of methods and techniques for obtaining the results, especially the choice of field methods and vegetation and non-vegetation indices for assessing the selected indicators. Subsequently, based on the verified map of degradation of the natural environment, created through space monitoring for a certain period, it is possible to forecast the functioning of the natural environment in the conditions of anthropogenic impact.