Journal of the Geographical Institute "Jovan Cvijic" SASA - Geographical Institute "Jovan Cvijic"
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CONDITIONS AND POSSIBILITIES OF GEOTHERMAL ENERGY UTILIZATION FOR ECONOMIC-TOURISTIC DEVELOPMENT
Get PDFUsing thermal mineral water in various economic activities would reduce the need for conventional energy sources and increase complementarity and sustainability of the tourism business. Since the temperature of spring wells of Vranjska banja ranges from 63 °C to 95 °C, this paper deals with the possibilities of their use as a renewable energy source. The paper gives the results of water physical and chemical characteristics testing, the temperature and discharge of ten geothermal springs in Vranjska banja, respectively A-1, A-2, EX-2, EX-3, EX-2, B-1, A-3, B-2, Gornji source and a collecting drain. Test results show that the water contains a high concentration of fluorine (8–8.5 mg/l), the impact of which exhibits in the treatment of cancer, nervous system diseases, and a lot of respiratory diseases, arthritis and musculoskeletal disorders. Based on the results of the temperature and the abundance of the geothermal resources in Vranjska banja, the paper presents data on the heat capacity of the spa springs. The paper reports the results of the possibilities of using water springs of Vranjska banja water temperatures up to 25 °C and 37 °C in agriculture, industry, sports activities, etc.
This article has been retracted. Link to the retraction 10.2298/IJGI181008004
GEOECOLOGICAL EVALUATION OF PROTECTED AREA FOR RECREATION AND TOURISM PLANNING – THE EVIDENCE FROM THE BOSNIA AND HERZEGOVINA NATIONAL PARK
Get PDFThe quantitative “diversity” method of the German geoecologist Hans Kiemstedt was adopted for the needs of a geoecological evaluation and landscape planning of the Kozara National Park in the Republic of Srpska in Bosnia and Herzegovina to be used for relaxation and recreation purposes. The aim of this paper is to indicate that geoecology can provide spatial planners with the expertise of landscape research, evaluation, planning and management. The method was employed to carry out landscape analysis and categorization, then the process of evaluation was done, based on which a synthetic map of the recreation potential of the research area was created. Geographic Information System (GIS) was used as a powerful tool that can provide a more detailed and meaningful analysis. This study shows the importance of integration a geoecological evaluation method with a geographic information system in order to get such a spacious offer in which the recreation areas are situated in most favorable places without negative effects on the environment. The evaluation of the Kozara National Park recreational potential conducted on a research area covering 3,907.54 ha leads to the conclusion that the area is mostly conditionally suitable for recreational activities. Obtained results showed that 41.32% is suitable and very suitable for recreation, especially distributed in central, northern, eastern, northeastern and southeastern parts of the National Park of Kozara
CHANGES IN TEMPERATURE EXTREMES IN BOSNIA AND HERZEGOVINA: A FIXED THRESHOLDS-BASED INDEX ANALYSIS
Get PDFThe paper analyzes trends in the extreme temperature indices based on fixed thresholds in Bosnia and Herzegovina during the 1961–2016. Based on data from 12 meteorological stations, trends in both warm and cold temperature indices were determined using the nonparametric Mann-Kendall test and the nonparametric Sen’s slope estimator. The observed tendencies in indices based on fixed thresholds were as expected in a warming world – warm temperature indices (summer days, tropical days and tropical nights) displayed the significant positive trends, whereas cold temperature indices (icing days and frost days) showed the downward tendencies. The annual occurrence of summer days and tropical days increased on average for 5.3 and 4.8 days per decade, respectively, whereas icing days and frost days displayed downward trends in the range of -1.7 and -3.6 days per decade, respectively. The obtained results indicate that the climate system warming was more a result of very pronounced positive trends in the warm temperature indices than the downward tendency of cold ones. The most prominent changes were observed in Banja Luka, Bugojno and Zenica regions. Both trends, positive in warm indices and negative in cold ones, become more pronounced in the 1990s and particularly since the beginning of the 21st century. Further research should focus on the assessment of the observed trends impacts on natural and socio-economic systems
SAINT GEORGE’S DAY IN THE BALKANS — CUSTOMS AND RITUALS IN BULGARIA, SERBIA AND MACEDONIA
Get PDFThis study gives an insight into the geographical distribution of the customary practices and the inter-cultural exchange between the societies that live in the Balkans. It focuses on finding the similarities and differences in some traditional customs of different nations practiced on St. George’s Day. By examining and comparing practices of Orthodox rural communities of Slavic origin, some representable religious and magical rituals, folklore and traditions incorporated in the festivities dedicated to Saint George in three Balkan countries — Bulgaria, Serbia and Macedonia are presented. The legendary image of the Saint and his characteristics contributed to the numerous and various customs and traditions connected to communal celebrations which can be clearly spotted in the defined geographical area, especially among rural communities. Within parallel existence and interrelationship between Balkan communities and intermingling of nations, the common roots and the development of similar ethnographic heritage, certain overlapping between Bulgaria, Serbia and Macedonia in celebrating St. George’s Day are evident
BIODIVERSITY OVERVIEW OF SODA PANS IN THE VOJVODINA REGION (SERBIA)
Get PDFDue to their specific physical and chemical properties of water and soil soda pans of the Vojvodina region represent a unique type of habitats. Salinity is a major structuring factor which strongly affects species richness. Many halotolerant, alkalotolerant and halophilic organisms, together with numerous eurytopic elements inhabit these kinds of ecosystems. In this review we tried to compile the biodiversity information from various literature sources and give the best representation of what can be expected to be found in these shallow, temporary and intermittent aquatic environments. Only a few groups of organisms are fairly well studied, while many others are insufficiently investigated or the knowledge of them is lacking altogether. Best investigated are certain groups of algae and birds. Bacterial communities, as well as many invertebrate groups, are poorly studied or not investigated at all. Characteristic elements of flora and fauna, together with growing anthropogenic pressures make soda pans prime targets for protection
CLIMATE TRENDS OF TEMPERATURE AND PRECIPITATION IN NIŠAVA RIVER VALLEY (SERBIA) FOR 1960-2015 PERIOD
Get PDFSince climate plays a crucial role on our planet and is an inseparable part of all human activities, it is necessary to precisely record all parameters in order to estimate current climate conditions, climate characteristics of a certain region, as well as to try to predict and calculate further trends of climate change. Therefore, for the purpose of this paper, air temperature and precipitation of four meteorological stations in the Nišava river valley in Southeastern Serbia (municipalities of Dimitrovgrad, Pirot, Bela Palanka and Niš) have been considered for the period 1960-2015 along with statistical methods for analysis of these parameters and prediction of their trends. Results have shown that there is a positive trend in mean annual air temperatures and average seasonal air temperatures for the whole region which can influence natural processes and human activities. For precipitation, it can be concluded that no significant change in mean annual precipitation for the observed period has occurred. However, there is a great difference in the amount of precipitation between consecutive years, especially from 2000 onwards which can cause very dry years or years with floods
SPATIAL-TEMPORAL VARIABILITY OF AIR TEMPERATURES IN SERBIA IN THE PERIOD 1961–2010
Get PDFThe aim of this paper is to examine the spatial and temporal variability of the average monthly, seasonal and annual air temperatures in Serbia. Therefore, data from 64 climatologic stations were analyzed in the period from 1961 to 2010. Based on the data, on the position of the stations (their latitude, longitude, altitude), and the characteristics of the terrain in their vicinity (inclination and terrain exposure in a radius of 10 km around the station), a regression model was constructed based on which air temperatures are interpolated for the territory of Serbia. The rootmean-square error (RMSE) of the regression model ranged from 0.2 ºC in January, February and November to 1.1 ºC in August. Spatial distribution of air temperatures is shown (maps of mean monthly, mean seasonal and mean annual air temperatures are made), and the Sen's procedure was used to calculate trends of air temperatures (maps of average monthly, mean seasonal and mean annual trends of air temperatures). The Mann-Kendall test was used to test the significance of air temperature trends. Apart from the southeast, the whole territory of Serbia has practically experienced a statistically significant rise in the average annual air temperature, with the highest increase in the summer and winter months
INFLUENCE OF THE SELECTED MINORITY GROUP ON GENTRIFICATION OF CHICAGO NEIGHBORHOOD EDGEWATER
Get PDFAs the world became more globalized place, big cities became social self-sustained eco-systems. Constant change of cities is an essential part of its charm, but also a possible problem. Changes of urban cities with worst connotation are gentrification and gentrification is the cause of segregation on so many levels. This paper analyzes what factors led to the process of gentrification of the Edgewater neighborhood in Chicago, Illinois (USA). The main goal is to discover the possible causes of a gentrification’s paths and its influence on changing urban neighborhoods. This paper uses the example of Edgewater and the influence of the LGBT community on the neighborhood gentrification. Using theories and methodology of urban sociology, it identifies Edgewater as a ‘gayborhood’, analyzes factors of the creation of such a community, its specific culture and symbolic representation. Finally, it questions the exploitation of this specific culture as a base for symbolic economy, growth machine and gentrification of the neighborhood
INDICATORS OF SPECIFICITY OF CLIMATE: THE EXAMPLE OF PODGORICA (MONTENEGRO)
Get PDFClimatic indices complexly display the climate of a place, and certainly influence its more qualitative characterization. In this paper, the specificity of the climate is analyzed, such as the degree of continentality and aridity, in the example of the city of Podgorica. The climate was considered on the basis of the data for almost the entire instrument period (1951–2017). The results obtained for thermal continentality show that maritime influences are primary and predominant, but the influence of the continent is also significant. In a hygric sense, the climate of Podgorica is characterized as poorly arid to poorly humid with significant oscillations during the year. The warmer period of the year, especially the summer, has the characteristics of arid climate. The colder period of the year, especially from November to February, has the characteristics of humid and even perhumidic climate, while the transitional seasons show signs of semi-aridity and semi-humidity
URBAN HYDROGRAPHY AND BLUESPOTS MAP OF CRAIOVA (ROMANIA)
Get PDFThe global climate change imposes new strategies of prevention and protection against the effects of urban flooding. The main goal of this paper is the identification of areas exposed to flooding risk in the Craiova city, and the study was structured in two sections. In the first part we aimed to identify the changes of the hydrography in the Craiova city from the beginning of its urban expansion and the hydrotechnical works realized for flooding protection from the 19th century until now. The reconstruction of the hydrography was based on the cartographic documents elaborated since the second half of the nineteenth century and on the previous research concerning the city’s design, water supply and sewage system. In the second part we realized a Bluespots map comprised of the areas and the buildings possibly exposed to the risk of flooding during heavy rainfall periods. The Bluespots map was automatically obtained with the Cloudburst extension of ArcGIS, being based on DEM data and the cadastral map of the city, after a method firstly applied by the Danish government to assess flood risk areas due to Cloudburst phenomena in Copenhagen