Template-Type: ReDIF-Article 1.0 Author-Name: H. Aghajani Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Author-Name: A. Fallah Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Author-Name: S. Fazlollah Emadian Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Gorgan Agricultural Sciences and Natural Resources University, Gorgan, Iran Title: Modelling and analyzing the surface fire behaviour in Hyrcanian forest of Iran Abstract: The purpose of this study was to assess the forest fire behaviour and investigate the impact of different parameters on the spread of surface fire in the Hyrcanian forest of Iran. Surface fire was simulated using mathematical models in Microsoft Visual Basic 6.0 environment during a 30-minute time period. Several parameters that contributed to the speed of surface fire such as slope, wind velocity and litter thickness in the forest floor and various types of forest litter associated with hornbeam (Carpinus betulus L.), Persian ironwood (Parrotia persica C.A.M), beech (Fagus orientalis L.) and maple (Acer velutinum L.) were investigated. The results indicated that the maximum burned area was associated with beech litter. Forest surface fire demonstrated similar behaviour for the litter types of beech and Ironwood, whereas in the case of maple and hornbeam litters, the fire spread parallelly and perpendicularly to contour lines, respectively. The burned area increased in an irregular pattern as the forest floor slope gradient was increased. Moreover, the skewed pattern of the burned area for the forest floor composed of maple, beech, ironwood andhornbeam litter was described as high, low, moderate and low, respectively. The fire spread angle in forest floor associated with maple and beech litters changed with litter thickness. Finally, litter thickness had a significant effect on the direction of fire spread and this was more prominent with hornbeam litter. Keywords: burned area, forest fire, litter thickness, simulation, slope, soft modelling, wind speed Journal: Journal of Forest Science Pages: 353-362 Volume: 60 Issue: 9 Year: 2014 DOI: 10.17221/97/2013-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/97/2013-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201409-0001.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:9:id:97-2013-JFS Template-Type: ReDIF-Article 1.0 Author-Name: R. Ostadhashemi Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Someh Sara, Iran Author-Name: T. Rostami Shahraji Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Someh Sara, Iran Author-Name: H. Roehle Author-Workplace-Name: Institute of Forest Growth and Forest Computer Sciences, Technische Universität Dresden, Tharandt, Germany Author-Name: S. Mohammadi Limaei Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Someh Sara, Iran Title: Estimation of biomass and carbon storage of tree plantations in northern Iran Abstract: To estimate the aboveground biomass and carbon storage in multi-species plantations we used species-specific equations method and three other generic methods. Astara county is located in northern Iran. It has a total area of 1,757 ha. Based on species-specific allometric equations, total aboveground biomass was calculated andvaried between 81.13 and 98.21 t.ha-1 for Acer velutinum, 68.36 and 83.44 t.ha-1 for Quercus castanifolia, 71.88 and 119.22 t.ha-1 for Tilia begonifolia, 56.07 and 61.98 t.ha-1 for Fraxinus excelsior and from 37.92 to 51.34 t.ha-1 for Prunus avium. There was a significant difference between the mean values of total aboveground biomass estimation obtained by species-specific equations and the three generic methods for Alnus subcordata, Pinus taeda and Pinus nigra. Results indicated that using generalized methods produced more reliable and accurate estimations for native species than for exotic species for rapid biomass and carbon estimation in order to decide on plantation development in the area. Keywords: biomass, generic methods, allometric equations, plantation development Journal: Journal of Forest Science Pages: 363-371 Volume: 60 Issue: 9 Year: 2014 DOI: 10.17221/55/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/55/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201409-0002.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:9:id:55-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Synek Author-Workplace-Name: Forest Management Institute in Brandýs nad Labem, Brandýs nad Labem, Czech Republic Author-Name: J. Vašíček Author-Workplace-Name: Forest Management Institute in Brandýs nad Labem, Brandýs nad Labem, Czech Republic Author-Name: M. Zeman Author-Workplace-Name: Forest Management Institute in Brandýs nad Labem, Brandýs nad Labem, Czech Republic Title: Outlook of logging perspectives in the Czech Republic for the period 2013-2032 Abstract: The aim of the submitted work was to analyze the outlook of logging perspectives in the next two decades (2013-2032) for all forests in the territory of the Czech Republic. The analyses made use of the national database of forest management plans and guidelines. For the purpose of these analyses, the forests were divided into commercially exploitable forests and forests commercially exploitable with restrictions. The latter ones included protection forests and the category of special purpose forests, i.e. 31c - forests in the territory of national parks and national nature reserves, and 32a - forests occurring in the first zones of protected landscape areas, and forests occurring in nature preserves and nature monuments. In addition to the potential total volume of timber logging, perspectives were studied separately for coniferous and broadleaved tree species as well as for individual main tree species. The derived model mean annual cut of 15.51 mil. m3 corresponds to the current timber production in the Czech Republic. Results of the analyses indicate that reduced logging of coniferous, namely spruce, timber is to be expected in the next twenty years. Keywords: Czech forests, forest management plans and guidelines, grading Journal: Journal of Forest Science Pages: 372-381 Volume: 60 Issue: 9 Year: 2014 DOI: 10.17221/37/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/37/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201409-0003.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:9:id:37-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: K. Lukášová Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: J. Holuša Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Comparison of Trypodendron lineatum, T. domesticum and T. laeve (Coleoptera: Curculionidae) flight activity in Central Europe Abstract: The main goal of work was to compare the flight activity of Trypodendron lineatum, T. domesticum and T. laeve in Central Europe. Field trapping experiments were conducted in 70- to 100-year-old Norway spruce stands located at three study sites in the Czech Republic. At each study site five pheromone traps were used. Pheromone-baited, black, window-slot traps (Theysohn, Germany) were used. Traps were placed at log landing areas 10-15 m apart from the nearest forest edge. Each trap was baited with a standard synthetic pheromone lure, XL Ecolure (Fytofarm, Slovakia). Three species of Trypodendron were recorded. T. lineatum was the most abundant, followed by T. domesticum and T. laeve. Flight activity began at the end of March or in mid-April. Only one another peak of the flight activity of T. lineatum and T. domesticum was observed at one study site in May 2011. Statistically significant relationships were found between catches of all species with the exception of T. lineatum vs. T. laeve and T. domesticum vs. T. laeve at one site. Males were more abundant than females mainly in T. lineatum samples. On the other hand, T. domesticum and T. laeve abundances of males and females were more equal, but in all cases of all Trypodendron species these abundances were not significantly different at all sites. Keywords: striped ambrosia beetle, hardwood ambrosia beetle, pheromone trap, sex ratio, abundance Journal: Journal of Forest Science Pages: 382-387 Volume: 60 Issue: 9 Year: 2014 DOI: 10.17221/60/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/60/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201409-0004.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:9:id:60-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: O. Nováková Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: I. Kuneš Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: J. Gallo Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: M. Baláš Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Effects of brassinosteroids on prosperity of Scots pine seedlings Abstract: We tested the influence of exogenous application of brassinosteroids (BRs) on survival, growth and biomass production of Scots pine (Pinus sylvestris) seedlings. BRs are natural substances, supposedly having many positive effects on plants such as improving growth, stress tolerance, survival and biomass production. One part of the seedlings was treated with a low concentration of synthetically prepared BRs and the other part was designated as the control without any treatment. Mortality, height and root collar diameter were measured in two subsequent years, the root-to-shoot ratio of biomass volume was determined in autumn 2013. The application of BRs significantly slowed height and radial growth of pine. The height increment of the BRs-treated seedlings was lower by 11% between 2012 and 2013 compared to the control. The increment in root collar diameter (2012-2013) in the BRs-treated seedlings was lower by 13% than in the control. The BRs-treated pines also experienced a significantly higher mortality compared to the control. No significant influence of BRs on biomass production was found. Keywords: plant hormones, seedlings, Pinus sylvestris, growth, biomass production Journal: Journal of Forest Science Pages: 388-393 Volume: 60 Issue: 9 Year: 2014 DOI: 10.17221/58/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/58/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201409-0005.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:9:id:58-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: E.B. Popov Author-Workplace-Name: Department of Forest Genetics Physiology and Plantations, Forest Research Institute - BAS, Sofia, Bulgaria Title: Results of 20 years old Douglas-fir provenance experiment established on the northern slopes of Rila Mountain in Bulgaria Abstract: The purpose of this study is to facilitate the detection of provenances relevant to the reforestation practice in Bulgaria. Studies were carried out in a Douglas-fir provenance trial plantation established at an altitude of 800 m a.s.l. on the northern slopes of Rila Mountain. To establish the productivity, assess the stands and rank provenances biometric procedures, methods of descriptive statistics and ANOVA were used. The diameter at breast height, average height, dominant height, total growing stock volume, assortment timber structure and survival of trees were analyzed in the stands of 55 Douglas-fir provenances. The provenances were characterized in terms of productivity of forest stands at 20 years of age and their ability to produce high quality timber was evaluated. Provenances: Newhalem No. 4 (Seed zone 402), Darrington No. 7 (Seed zone 403), Parkdale No. 19 (Seed zone 661) and Idanha No. 29 (Seed zone 452) have been recommended. Among the recommended provenances are those with growing stock volume with branches from 296 to 354 m3.ha-1, mean annual increment from 14.8 to 17.7 m3.ha-1 and dominant heights of up to 17.9 m. Keywords: Pseudotsuga menziesii, introduction, plantation forestry, productivity, assortment structure Journal: Journal of Forest Science Pages: 394-399 Volume: 60 Issue: 9 Year: 2014 DOI: 10.17221/14/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/14/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201409-0006.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:9:id:14-2014-JFS