Прегледај по Аутор "Valjarević, Aleksandar"
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- СтавкаEnvironmental Suitability of the City of East Sarajevo for the Location of Municipal Solid Waste Disposal Site Using a GIS Based Multi-Criteria Analysis(2022) Šušnjar, Sanda; Golijanin, Jelena; Pecelj, Milica; Lukić Tanović, Mariana; Valjarević, AleksandarWorld production growth affected a rise in the amount of waste generated. In these circumstances proper waste management becomes a highly important issue. The protection of the environment from degradation requires a multi-dimensional approach to this problem. Integration of multicriteria decision making with the geographic information systems provides a useful methodology and a helpful instrument in waste management, particularly in the assessment of environmental suitability for the location of municipal solid waste disposal sites. Multidimensional approach is realized through analytic hierarchy process (AHP) in the determination of sub-criteria and criteria values and final site selection. Geographic information systems (GIS) provide spatial data input and give an insight into final result of the decision-making process. Integrated methodology is applied in suitability analysis of the City of East Sarajevo for the location of municipal solid waste disposal site (MSWDS). Ten criteria were evaluated through pair-wise comparison matrices and suitability map was obtained using weighted linear combination algorithm in GIS. Extracting high suitability area, the largest locations were evaluated through AHP according to ten criteria and final site selection was made. The results indicate high applicability of integrated multi-criteria analysis and GIS methodologies for coordination of decision-making process in spatially oriented issues of environmental management
- СтавкаEstimation of potential soil erosion reduction using GIS-based RUSLE under different land cover management models: A case study of Pale Municipality, B&H(Xi’an Jiaotong University, China, 2022) Golijanin, Jelena; Nikolić, Gojko; Valjarević, Aleksandar; Ivanović, Rade; Tunguz, Vesna; Bojić, Stefan; Grmuša, Milka; Lukić Tanović, Mariana; Perić, Marija; Hrelja, Edin; Stankov, SlobodankaSpatial assessment of soil erosion is an important indicator of ecological soil change and global environmental changes. This is especially true for countries with rich forest cover such as Bosnia and Herzegovina. In this study, the risk of soil erosion was assessed using the Revised Universal Soil Loss Equation (RUSLE) model and the impact of changes in the forest ecosystem, current conditions were compared with possible future forest management scenarios, and measures and solutions were proposed to reduce soil erodibility in vulnerable areas of the Pale Municipality in Bosnia and Herzegovina. The studied area is at increased risk of soil erosion due to natural conditions (mountain relief, climate change, and the frequency of extreme climatic events—drought and heavy rains, which occur more and more frequently in a short period of time) and due to anthropogenic factors, such as large-scale deforestation and conversion of mountain areas for tourism purposes, tracing and construction of ski slopes and ski resorts in general, and expansion of settlements. All this leads to threats to water conservation areas, landslides, floods, forest fires, and additional reduction of forest areas due to drying of forests and expansion of settlements. GIS as a tool provides us with a quick and accurate way to find possible solutions to problems resulting from the intensive use and inadequate monitoring. In this study, we have tried to offer possible solutions and show the benefits that can be obtained by varying the factors that affect soil erodibility and depend on vegetation cover, that is, land use (C-factor). This study presents the application of RUSLE methods in combination with GIS for the purpose of planning economic activities, such as winter tourism development in the community of Pale. An increase in soil loss due to inappropriate land use was found, with the average annual soil loss due to deforestation in the ski area increasing to 909.43 t ha−1 year−1.
- СтавкаGIS Analysis of Land Cover Changes on the Territory of the Prokuplje Municipality(Hindawi, 2014) Valjarević, Aleksandar; Živković, Dragica; Valjarević, Dragana; Stevanović, Vladica; Golijanin, JelenaThe monitoring of the territory of Prokuplje Municipality was done based on 1 : 25,000 topographic maps in three different time periods (1969, 1974, and 1984) and land cover map in 2012. Analogous topographic maps done in 1969, 1974, and 1984 were used, while in 2012 the land cover map obtained by using CORINE-like approach was used. Topographic maps are developed by aerial campaign, and today they are replaced by satellite images. Topographic maps were scanned, and raster form was transformed to vector data with Geo Media Professional 6.1 and Global Mapper software. The monitoring in the period of 1969-2012, on the area of 758300000 m(2), was performed, where some parameters were analyzed. In particular, the changes of natural resources, primarily forest lands, were observed as well as the type of land susceptible to primary erosion, including the level of urbanization and level of agricultural land. The obtained results clearly showed changes in forestation within the 43-year-long period, as well as changes in primary erosion and urbanization, while at the level of agricultural land, slight changes were found. The paper also involved transition of social factors from 1969 to 2012, expressed as a change between the earth and forest layer.
- СтавкаGIS and geographical analysis of the main harbors in the world(De Gruyter, 2021) Valjarević, Aleksandar; Radovanović, Dragan; Šoškić, Svetislav; Bačević, Nikola; Milentijević, Nikola; Golijanin, Jelena; Ivanović, MarkoThis paper points out the possibilities of better exploitation of marine traffic as well as its connection with other kinds of traffic. Special attention is given to the analysis of 1,081 harbors about their availability during the year. The methods and algorithms used in GIS are buffers, cluster, method of interpolations, and network analysis. The methods used for the purpose of conducting numerical analyses are algorithms that served for the analysis of the network, its transport features, and the connectivity with harbors in terms of geospace. The main results found in this research showed that harbors have good connectivity in the first place with road traffic and after that with air and railroad traffic. According to data from 2019, all traffic lines cover 4.1 × 1015 km, and the road traffic has the most significant potential in connection with the harbors. The most connected harbors and airports are in the east coast of North America, west coast, north Europe, southern Europe, south-east Australia, a central part of Oceania, and south-east Africa. The results in the modified Likert scale between airports and harbors showed medium results. The densest road network is located in the eastern part of USA, western and central part of Europe, and east coast of China. The number of possible connected lines between main road nodes and harbors is 0.8 × 109. This type of traffic showed excellent results and connection with harbors. The number of possible connected lines per month between railroads and harbors is 1.3 × 103. This type of traffic showed low connectivity with the harbors. In the end comparison of harbors with air, road and railroad networks were established. The geographical position of harbors was analyzed, and better understanding was performed on a global scale.
- СтавкаLong Term Monitoring and Connection between Topography and Cloud Cover Distribution in Serbia(MDPI, 2021) Valjarević, Aleksandar; Morar, Cezar; Živković, Jelena; Niemets, Liudmyla; Kićović, Dušan; Golijanin, Jelena; Gocić, Milena; Martić Bursać, Nataša; Stričević, Ljiljana; Žiberna, Igor; Bačević, Nikola; Milevski, Ivica; Durlević, Uroš; Lukić, TinThe use of weather satellite recordings has been growing rapidly over the last three decades. Determining the patterns between meteorological and topographical features is an important scientific job. Cloud cover analysis and properties can be of the utmost significance for potential cloud seeding. Here, the analysis of the cloud properties was conducted by means of Moderate Resolution Imaging Spectroradiometer (MODIS) satellite recordings. The resolution of used data was 1 km2 within the period of 30 years (1989–2019). This research showed moderate changing of cloudiness in the territory of Serbia with a high cloudiness in February, followed by cloudiness in January and November. For the past three decades, May has been the month with the highest cloudiness. The regions in the east and south-west, and particularly in the west, have a high absolute cloudiness, which is connected with the high elevation of the country. By means of long term monitoring, the whole territory of Serbia was analyzed for the first time, in terms of cloudiness. Apart from the statistical and numerical results obtained, this research showed a connection between relief and clouds, especially in the winter season. Linear regression MK (Mann-Kendall test) has proven this theory right, connecting high elevation sides with high absolute cloudiness through the year.
- СтавкаTHE FINGER OF GOD CLIMATE CHANGES AND THE LARGEST CHRISTIAN PLACES(Ecozone, OAIMDD, 2018) Valjarević, Aleksandar; Živkovic, Dragica; Golijanin, JelenaIn this paper, we explored the influence of the global climate changes to the Christian Holy places around the world. The catastrophic prediction of devastation can be indicated by resistance of some plants on the Earth. Due to weather forecasting given by the World Meteorological Organization, with help of the multiple criteria of Geographical Information System, we have don e climate analysis. For the modelling of climate changes, we also considered agroclimatological parameters for the three most optimal crops; corn, soybean and wheat. In this way, we can give a better connection between the Holy Bible and modern science pr ognosis.
- СтавкаThe future of edible crops in Europe and their maximum point of resistance in temperature increase(2020) Valjarević, Aleksandar; Milanović, Miško; Golijanin, Jelena; Milinčić, Miroljub; Lukić, TinIn the last decades, knowledge about the climate has increased significantly. Climate change today is the subject of many sciences, including meteorology, climatology, geology, geography, geophysics, astronomy, etc. The present predictions with updated meteorological data and with data of the number of particles of CO2 in the troposphere may give satisfying results. Forecasting for industrial grains such as maize, soybean, and wheat will be essential for industry and everyday life. Within the last agreement of climate change in Paris, global temperatures will continuously be increasing by 2100. In this research, we used a synthetic grid with agroclimatological data which comprises predictions until 2100. These data were found in the sub-section called World Clim Version 1 or in the CMIP5 database. After numerical and geospatial GIS analysis, we got the following predictions: (i) slight- no temperature changes or changes including the increase of temperature by 0.5 °C, (ii) moderate- temperature increases by 2.0 °C, (iii) severe- temperature increases by 5.0 °C, and (iv) incredible- temperature increases to extreme values, incase of which the survival of plants will be endangered.