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A Comparison of AHP and BWM Models for Flash Flood Susceptibility Assessment: A Case Study of the Ibar River Basin in Montenegro
No full textAssessing flash flood susceptibility is crucial for disaster management, yet Montenegro lacks research using geoinformation technologies. In northeastern Montenegro, the Ibar River Basin, mainly in Rožaje, has a well-developed hydrological network with torrential streams prone to flash flooding. This study compares two multi-criteria GIS decision analysis (GIS–MCDA) methodologies, the Analytic Hierarchy Process (AHP) and the Best-Worst Method (BWM), for assessing flood susceptibility. The analysis uses the Flash Flood Susceptibility Index (FFSI), integrating geoenvironmental and climatic factors. The geoenvironmental criteria considered include terrain slope, distance from the drainage network, geology, land cover, drainage density, bare soil index, and the BIO16 variable, which represents the mean monthly precipitation of the wettest quarter to enhance precipitation pattern assessment. The AHP model classifies 2.78% of the area as high to very high susceptibility, while the BWM model identifies 3.21% in these categories. Both models perform excellently based on AUC values, with minor, non-significant differences. Sensitivity analysis shows AHP provides a more stable weight distribution, whereas BWM is more sensitive to weight changes, emphasizing dominant criteria more strongly. This study introduces BWM for the first time in flash flood modeling, demonstrating its suitability for susceptibility assessment. The key novelty lies in its comparative analysis with AHP, highlighting differences in weight distribution and model stability
MCDM Approach Combining DEA and AHP Methods in Sustainable Tourism: Case of Serbia
No full textThis paper focuses on the workforce capable of implementing new trends through the application of environmental tourism and IT knowledge. Multi-criteria optimization methods such as Data Envelopment Analysis (DEA) and Analytical Hierarchy Process (AHP) were used to solve a particular and sensitive business decision problem. A unique questionnaire on five global trends - renewable energy growth, pollution, electrification, cloudification, data boom and smartization - was developed to assess the capabilities of potential candidates in relation to environmental issues in tourism and to determine whether they are able to solve tasks in a sustainable way. This paper proposes an approach for the selection of candidates for sustainable and green tourism. From 200 candidates, data collected in a northern region of Serbia in the fall of 2023, the model resulted in the 5 best alternatives under 5 criteria. The final solution was the alternative/candidate B with the consistency index 0.03. The intention was that by combining AHP and DEA methods to evaluate efficiency, the subjectivity of decision making in the selection of candidates would be minimized. The new value of this work could be that advanced technologies are integrated into sustainable tourism in a practical and scalable way, and that methods for evaluating and implementing the technologies in question are developed. This could form the basis for future research and practical applications
Boka u Banatu - položaj kao determinanta razvoja
No full textPoložaj Boke je kompleksna i dinamična kategorija i determinanta razvoja (prostorno-funkcionalnog, ekološkog, socio-ekonomskog, demografskog, kulturnog i drugog). U radu je položaj prikazan kroz različite odrednice (vremenske i geoprostorne, apsolutne i relativne) od značaja za pravac i dinamiku prirodnih i društvenih pojava i procesa. Analizirani su pojedini faktori položaja kao što su: pogranični pojas, ravničarska teritorija, reka Tamiš i druga vodna tela i hidro-tehnički objekti, prirodni uslovi, resursi i drugo. Prikazan je i njihov uticaj na formiranje i egzistenciju naselja. Rad kroz multi disciplinarni pristup, pruža bolje razumevanje istorijsko-geografske relativnosti (promenjivosti) položaja Boke u kontekstu sagledavanja pojava, procesa i odnosa (razvojnih tendencija) u okruženju (privreda, demografija, saobraćaj, kultura i drugo).Urednik: Vladimir Čavra
Ruralno planiranje u kontekstu Zelene agende - evropski principi i primeri dobre prakse
No full textRuralna područja Evropske unije i njihovo stanovništvo danas se suočavaju sa mnogim izazovima, među kojima su depopulacija i starenje stanovništva, nedostatak infrastrukture, otežan pristup uslugama, dostupnost javnog prevoza, slabije mogućnosti za zapošljavanje, kao i specifični izazovi vezani za klimatske promene i degradaciju životne sredine. Istovremeno, ruralna područja se smatraju ključnim za tranziciju Evropske unije ka ekološki održivom društvu i suočavanje sa klimatskim promenama i izazovima zagađenja životne sredine, proizvodnje hrane i energije iz obnovljivih izvora, gubitka biodiverziteta,zaštite prirode i prirodnih resursa. U tom kontekstu, u Evropskoj uniji je razvijen strateški okvir koji integriše ključna pitanja vezana za održivu transformaciju ekonomije i društva i razvoj ruralnih područja, koji obuhvata Zelenu agendu Evropske unije i Evropsku viziju ruralnog razvoja, kao i niz strategija i politika, među kojima su: Strategija „od farme do viljuške“, Strategija za zaštitu biodiverziteta, Nova strategija za šume i Poljoprivredna politika.Urednici: Dejan Filipović, Velimir Šećerov, Dušan Ristić, Marina Ili
Impacts of recent migration on Belgrade’s housing market dynamics
No full textThe ongoing migration crises, particularly the war in Ukraine and increasing political and economic instability in Russia, have prompted significant waves of people seeking refuge in various European cities. Among these destinations, Belgrade has emerged as a key location for many migrants. As a result, the local housing market has been significantly impacted, leading to shifts in rental prices, property values, and residential behaviour. The growing influx of migrants has intensified population pressure on Belgrade’s housing market, with central neighbourhoods—traditionally the most sought-after areas—seeing a surge in demand. In particular, Russian migrants, facing limited migration options, have played a central role in driving this increase. It has been most evident in rental prices, which have nearly doubled since the migration influx began. While house prices have also risen, they have not escalated at the same rate as rents. The rapid changes in housing market have had a profound impact on the local population, particularly those from lower socioeconomic backgrounds who find it increasingly difficult to afford housing in the face of rising rents and property prices. This shift exposes the vulnerability of Belgrade’s post-socialist, deregulated housing system, which struggles to keep up with rapid demographic and economic changes. This research utilizes quantitative and qualitative methods to explore these issues. Beside in-depth semi-structured interviews which were conducted with experts from major real estate agencies in Belgrade, additional interviews and surveys were conducted with migrants who have settled in Belgrade in order to explore their residential preferences
Ekološka edukacija učenika za zelenu budućnost
No full textEdukacija učenika o ekološkim sadržajima je važan korak za zelenu budućnost i jedan od glavnih ciljeva kojem je posvećena šira društvena zajednica. Cilj rada je podizanje svesti učenika o značaju zaštite životne sredine kroz sistem formalnog obrazovanja u Srbiji. Upravo se eko-škole bave realizacijom programa sistemskog i participativnog obrazovanja kroz različite projektne aktivnosti. Važna je uloga svih aktera koji mogu da doprinesu ekološkom obrazovanju učenika, a pored nastavnika i roditelja, svakako je značajna i lokalna zajednica. Teme koje se obrađuju u programskim sadržajima obuhvataju zaštitu voda, vazduha i zemljišta, održivi razvoj, upravljanje otpadom i klimatske promene jer one mogu da utiču na podizanje svesti o značaju zaštite životne sredine. Rezultati rada ukazuju da je moguća ekološka edukacija kroz obradu navedenih tema u cilju aktivne uloge učenika i njihov doprinos zelenoj budućnosti.Urednici: Dejan Filipović, Velimir Šećerov, Dušan Ristić, Marina Ili
Supplementary data for the article: Đorđević, V., Lakušić, D., Novković, I., Stevanović, V.,& Tsiftsis, S.. (2025). Factors Influencing Orchid Species Richness in the Central Balkans: The Importance of Belowground Organ Types. Plants, 14(3), 443. https://doi.org/10.3390/plants14030443
No full textSupplementary material for: [https://doi.org/10.3390/plants14030443]Related to published version: [https://gery.gef.bg.ac.rs/handle/123456789/2069
Cloud-Based Assessment of Flash Flood Susceptibility, Peak Runoff, and Peak Discharge on a National Scale with Google Earth Engine (GEE)
No full textFlash floods, exacerbated by climate change and land use alterations, are among the most destructive natural hazards globally, leading to significant damage and loss of life. In this context, the Flash Flood Potential Index (FFPI), which is a terrain and land surface-based model, and Google Earth Engine (GEE) were used to assess flood-prone zones across North Macedonia’s watersheds. The presented GEE-based assessment was accomplished by a custom script that automates the FFPI calculation process by integrating key factors derived from publicly available sources. These factors, which define susceptibility to torrential floods, include slope (Copernicus GLO-30 DEM), land cover (Copernicus GLO-30 DEM), soil type (SoilGrids), vegetation (ESA World Cover), and erodibility (CHIRPS). The spatial distribution of average FFPI values across 1396 small catchments (10–100 km2) revealed that a total of 45.4% of the area exhibited high to very high susceptibility, with notable spatial variability. The CHIRPS rainfall data (2000–2024) that combines satellite imagery and in situ measurements was used to estimate peak 24 h runoff and discharge. To improve the accuracy of CHIRPS, the data were adjusted by 30–50% to align with meteorological station records, along with normalized FFPI values as runoff coefficients. Validation against 328 historical river flood and flash flood records confirmed that 73.2% of events aligned with moderate to very high flash flood susceptibility catchments, underscoring the model’s reliability. Thus, the presented cloud-based scenario highlights the potential of the GEE’s efficacy in scalability and robustness for flash flood modeling and regional risk management at national scale
Spatial Patterns of Population Distribution and Dynamics in Serbia’s Urban System
No full textIn the first two decades of the 21st century, Serbia experienced widespread depopulation impacting entire regions and nearly 95 percent of all settlements. Additionally, a significant decline in urban populations, known as “urban shrinkage”, was observed in 90 percent of urban centres. Considering that population redistribution is substantial indicator of development diffusion within the urban system and simultaneously represents a critical challenge for its development, this study seeks to identify various patterns of contemporary urban development in the Republic of Serbia through the analysis of population dynamics. The objective of the study is to improve understanding of spatial patterns across different spatial levels, recognizing that general population dynamics trends do not fully capture the diverse aspects and effects of spatial changes. It examines statistical regions to provide a comprehensive overview, settlement level to show the correlation between direction and intensity of changes and settlement size and location, local context (e.g. ethnic structure), etc. Furthermore, urban regions are utilized to differentiate the various impacts of urban centres at both interregional and intraregional levels. For research purposes, urban regions are outlined based on principles of functional centrality and spatial continuity. The degree of functional integration between the centre and its surrounding area
is assessed by measuring the intensity of daily movement of the active population. The analysis was carried out using data from three consecutive censuses between 2002 and 2022, covering the periods from 2002 to 2011 and 2011 to 2022.Editor: Natalija Miri
Life Years Without Pollution or Noise: A Subjective-Environmental Mortality Indicator Across Europe
No full textEnvironmental degradation poses a growing threat to public health and longevity across Europe, with air and noise pollution contributing significantly to premature mortality and diminished quality of life. While objective indicators such as life expectancy offer valuable insights into population health, they fail to capture the lived experience of environmental stress. This paper introduces a novel indicator “Life Years Without Pollution or Noise” which integrates life table data with subjective perceptions of environmental exposure across 25 European countries. Based on data from the EU-SILC survey and life tables data, the authors uses the well-established Sullivan method. “Life Years Without Pollution and Noise” are calculated by weighting in a life table the age-specific person-years lived with age-specific proportions of non-exposers to pollution or noise. The results reveal a striking reversal of conventional longevity patterns. While Southern and Mediterranean countries traditionally rank high in overall longevity, they report some of the lowest values for life years lived without pollution or noise driven by widespread perceptions of environmental stress. In contrast, several Eastern European countries, despite facing less favorable mortality conditions, demonstrate significantly higher values for this indicator and notably smaller gaps between life expectancy and life years without pollution or noise. The observed heterogeneity across Europe illustrates the complexity of environmental health assessments, where cultural, infrastructural, and policy factors intersect with individual perceptions. Importantly, the differences in life years without pollution and noise are substantially larger than those observed in total life expectancy, emphasizing the need for mortality indicators that integrate environmental dimensions. To improve public health outcomes, policies must address both the physical reduction of environmental stressors and the enhancement of perceived environmental quality. Incorporating subjective measures into demographic and epidemiological research is essential for capturing the lived realities of populations across Europe.Editor: Natalija Miri