Glasnik Sumarskog Fakulteta Univerzitet u Beogradu最新文献

{"title":"The Balkans - the most erosive part of Europe?","authors":"I. Blinkov","doi":"10.2298/GSF1511009B","DOIUrl":"https://doi.org/10.2298/GSF1511009B","url":null,"abstract":"Soil erosion has been occurring over the geological time. Inappropriate human activities accelerate this process. Soil erosion by water is a widespread problem throughout Europe. The South and Southeast regions of Europe are significantly prone to water erosion. In parts of the region, erosion has reached a stage of irreversibility and in some places erosion has practically ceased because there is no soil left. Scientists from the Balkan countries faced with the erosion problem for years, paid significant attention to solving problems with erosion. The aim of this study is to compare the results of water erosion intensity in the Balkan countries with other European countries. The basic methodological approach in this paper is an analysis of secondary data, using the method of “content analyses” of various data sources. Inductive and deductive qualitative analysis was used and finally the method of “comparative analysis” is applied too. Through the analysis of national researches, it was estimated that erosion intensity in Balkan countries is 548 m3km-2 (similar to 5.48 tha-1) and the total amount of annual produced erosive material is 419.9 *106 m3. The mean European average annual erosion intensity is 3.13tha-1. The most erosive countries in Europe are the Balkan countries, Albania and Montenegro where the mean annual intensity of erosion is > 10 tha-1.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"36 1","pages":"9-20"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68306914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural and productivity characteristics of montane beech forests in the area of Radava mountain.","authors":"I. Golic","doi":"10.2298/gsf1511037g","DOIUrl":"https://doi.org/10.2298/gsf1511037g","url":null,"abstract":"This paper presents a typological study of the ecological unit of mountain beech forests in the area of Radava mountain. The aim of this research is to present the basic characteristics of these forests ecosystems through the process of defining forest types. The results will help in defining the forest type and according to the results of this research will create conditions for a more realistic definition of goals in planning the management of these and other forest ecosystems.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"37-44"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68307044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An analysis of briquette value chain at the Limsko forest area.","authors":"N. Ranković, Dragan Nonic, J. Nedeljković, Aleksandar Musić","doi":"10.2298/GSF15S1111R","DOIUrl":"https://doi.org/10.2298/GSF15S1111R","url":null,"abstract":"Value creation represents an increase in the value of assets in the manufacturing process. Business processes that lead to value creation can be presented as a value chain. For wood products, total value creation takes place in the complex processes of production and exchange between forestry and timber industry. The research on the use of biomass for energy purposes is increasing in recent decades. Within the research on value chain, in our country were, to less extent were represented those related to woody biomass products. In this sense, the aim of the research is to determine the organization of woody biomass products (briquettes) value chain and its analysis in the Limsko forest area. A “door-to-door” survey was used as a research technique. Data collection was conducted in the period from April to May of 2013. In total, 19 representatives of enterprises, which are participants in the woody biomass products value chain in the Limsko forest area were surveyed. Manufacturing enterprise, located in Nova Varos, was analysed as the main participant in this chain. In addition, its suppliers (15), wholesaler (1), retailer (1), and consumer (1) were analysed. The manufacturing enterprise exclusively used raw material produced in sawmills. The results indicate that an increase in value occurs, primarily, during the transportation of raw materials from sawmill to the manufacturing enterprise. The next increase in value occurs during the storage of raw materials within the manufacturing enterprise and with the emergence of new stages in the production process, as well as during the transportation of products to the wholesaler, retailer and consumer.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"111-120"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68308140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Italian alder (Alnus cordata/Loisel./Desf.) - new species for allochtonous dendroflora of Serbia.","authors":"M. Bobinac, S. Andrašev, M. Perović, Andrijana Bauer-Živković, Djura Jorgic","doi":"10.2298/gsf1511021b","DOIUrl":"https://doi.org/10.2298/gsf1511021b","url":null,"abstract":"The foreign tree species, Alnus cordata/Loisel./Desf. (Italian alder), (Betulaceae/Loisel./Duby), not previously recorded in the dendroflora of Serbia, is described in this paper. Italian alder trees in an experimental plot in the area of Erdevik, aged 11 years, show good vitality and fast growth, and bear fruits since their 10th year. Tree heights are in range from 10.4 to 16.2 m, and diameters at the breast height range from14.6 to 34.9 cm. The morphological properties of leaves, fruiting organs (“cones”) and male catkins are in concordance with the values in literature sources, although they show great variability. Since the time of plantation establishment, the absolute minimum air temperature in the nearby meteorological station of Sremska Mitrovica was -26.50C, so it can be assumed that the species is frost hardy. On the basis of the researched properties of Italian alder, it can be concluded that this species can be cultivated in Serbia as an ornamental in urban areas and as a fast growing species in forest plantations for biomass production. [Projekat Ministarstva nauke Republike Srbije, br. 31041: Sumski zasadi u funkciji povecanja posumljenosti Srbije]","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"21-36"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68306988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micropropagation of Achillea millefolium L. on half-strength MS medium and direct rooting and acclimatization of microshoots in hydroponic culture.","authors":"M. Marković, D. Skočajić, M. Grbic, M. Djukic, D. Obratov-Petković, Danijela Djunisijevic-Bojovic, Milica Borovica","doi":"10.2298/gsf1511099m","DOIUrl":"https://doi.org/10.2298/gsf1511099m","url":null,"abstract":"The aim of this study was to determine the possibility of micropropagation of the medicinal plant A. millefolium on half-strength MS medium and ex vitro rooting and acclimatization of the obtained microshoots in hydroculture in order to establish an efficient production method. Two explant types were used: basal and terminal cuttings, and better results were achieved when terminal cuttings were used. The development of shoots in the multiplication phase was successful with a regeneration percentage of 100%. Ex vitro rooting in a modified Hoagland nutrient solution was successful (83%), but the percentage of in vitro rooting on half-strength MS medium without hormones was higher (95%). However, bearing in mind that mass production of A. millefolium is more efficient when the phase of in vitro rooting is excluded, this method could be recommended for commercial propagation of this medicinal plant. It is necessary to conduct additional research in order to optimize the composition, EC and pH value of the hydroponic nutrient solution. [Projekat Ministarstva nauke Republike Srbije, br. 43007]","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"2015 1","pages":"99-112"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68307153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rehabilitation of a secondary network of forest traffic infrastructure (skid roads - skid trails).","authors":"M. Bajrić, D. Sokolovi̇c","doi":"10.2298/gsf15s1005b","DOIUrl":"https://doi.org/10.2298/gsf15s1005b","url":null,"abstract":"Forest transport infrastructure is the key segment of rational forest resource management. One of its constituent and inseparable segments are skid roads and skid trails whose network density significantly exceeds the primary network, i.e. truck roads. Skid road -skid trail network density in high economic forests of FB&H is most often between 40 and 100 m/ha. Simplified way of construction, non-existence of road construction, objects for surface water drainage as well as significant longitudinal inclination (up to 50%) in which they are constructed, makes them subject to erosion processes. The lack of rehabilitation measures on skid roads - skid trails causes significant damages in post-exploitation period, and very often to the extent that the ones in the following exploitation round are unusable for skidding. Utilization of skid roads - skid trails damaged by erosion processes for forest operations often represents a significant expense. This paper considers rehabilitation measures efficient from the point of remedying erosion processes, and at the same time, acceptable from the point of financial expenditure for forest operations.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"5-14"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68307303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the means of forest harvesting in the Federation of Bosnia and Herzegovina","authors":"V. Halilović, J. Musić, Safet Gudra, J. Topalović","doi":"10.2298/GSF15S1055H","DOIUrl":"https://doi.org/10.2298/GSF15S1055H","url":null,"abstract":"The development of technology and the means of labour in the technological process of forest harvesting in FBiH mainly depends on the factors related to the specific manner of forest management. The dominant share of mixed tall forests with natural regeneration, the selective manner of management and rather difficult natural conditions have resulted in the application of the cut-to-length method and to a lesser extent, the tree-length and semi-tree-length methods. On the basis of expert classification of the development phases in forest harvesting, it can be noted that wood assortment production in FBiH is currently partially mechanised. With the aim of defining measures for increasing productivity, lowering the costs and a greater humanisation of work, there has been an analysis of the current state of the means of work in all three phases of forest harvesting. The analysis included the following parameters: number of means in different phases, the type, the average age, ownership and technical planned obsolescence. All the data were collected through a survey which included all stakeholders (cantonal forest companies and private contractors). The results showed a satisfactory state only when chainsaws are concerned, i.e. the rather cheap tools. Other equipment (adapted tractors, skidders, trucks, etc.) has largely reached planned obsolescence. Their old age results in a low level of utilisation, i.e. an insufficient amount of working hours per year which eventually leads to a decrease in productivity and increase in expenses. Based on the data, it can be concluded that it is necessary to begin the process of new mechanisation procurement and the replacement of existing, time-worn and technologically obsolete machines with new ones. At the same time, it is clear that, in the conditions of low availability of investment capital and cheap labour force, this has to be a gradual process. In relation with this, the process should start in the most expensive phase - timber extraction, i.e. the phase in which the economic efficiency is unquestionable.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"55-62"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68307409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fuel consumption in the transport of technical broadleaf roundwood in lowland areas","authors":"M. Danilović, M. Ilić, N. Ćuprić, Slavica Antonić, D. Stojnić","doi":"10.2298/GSF15S1025D","DOIUrl":"https://doi.org/10.2298/GSF15S1025D","url":null,"abstract":"This paper presents the results of an analysis of fuel consumption in the transport of technical roundwood of soft broadleaves from the felling site to a roadside landing using forwarders and tractor assemblies. The research was performed in various operating conditions in the area of FE \"Banat\" Pancevo. On the basis of the results of the analysis of variance, the data recorded in a variety of conditions were grouped. In addition, the dependence of fuel consumption on the average volume of tour was estimated. The results of the conducted analysis indicate that operating conditions significantly affect fuel consumption of the investigated vehicles. The elements of statistical analysis of the dependence of fuel consumption on the volume of load indicate that an increase in load causes increased fuel consumption per unit of production. Having in mind the results of the analysis of variance, unique norms of fuel consumption were adopted for practical purposes. The highest average consumption (1.21 L/m3) was achieved by a tractor assembly (Same Laser 130 tractor and Imako TP12 trailer with a Loglift 61F hydraulic crane), while significantly lower consumption was achieved by a John Deere 1210E forwarder (1.06 L/m3). In favourable operating conditions, consumption of the forwarder was about 0.9 L/m3.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"25-34"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68307540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The National Forest Inventory of Serbia: state and possible further directions of development.","authors":"D. Pantić, Dragan Borota","doi":"10.2298/GSF1512009P","DOIUrl":"https://doi.org/10.2298/GSF1512009P","url":null,"abstract":"","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"9-32"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68307166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meteorological disasters in Slovenian forests - how to approach the restoration in our specific conditions.","authors":"J. Marenče","doi":"10.2298/GSF15S1085M","DOIUrl":"https://doi.org/10.2298/GSF15S1085M","url":null,"abstract":"In recent years, forests are exposed to various meteorological disasters. The climate change and warming of atmosphere cause more intensive and frequent occurrences in the atmosphere. This is also reflected in Slovenian forests - in particular in the form of windthrow, snow-damage, landslides and avalanches, and in 2014 a catastrophic ice storm. Some forecasts indicate that the future will bring more of this kind of disasters. The ice storm in the last year stroke the land the most in history, in particular in terms of damaged trees and areas. According to the available data, the damaged quantities of trees represent more than a two years planned annual cut in Slovenian forests, while about a half of the country was affected. The majority of the damaged wood comes from private forests. The remedying of such extensive meteorological disasters is demanding, dangerous and prolonged - it is also hindered by the specific ownership structure of the forest land in Slovenia and its average size. 75% of all forest have private owners, and this land is fragmented with a large number of forest holders. An average forest land is only 2.3 ha per individual owner. In these conditions, the following questions have to be answered: who, how and in what time is it possible to remedy the caused damage? What is the current quality of wood which was damaged in many ways in the meteorological disaster? Is it possible to use more modern felling technologies and wood transports from the forest in so fragmented private land?","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"85-96"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68307675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}