Template-Type: ReDIF-Article 1.0 Author-Name: editors Title: Index of volume 59 Journal: Journal of Forest Science Pages: I-IV Volume: 59 Issue: 12 Year: 2013 DOI: 10.17221/7177-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/7177-JFS.html File-Format: text/html Handle: RePEc:caa:jnljfs:v:59:y:2013:i:12:id:7177-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Rezaei Author-Name: F. Shafizade Author-Name: M.A. Rezaei Title: Determination of correction coefficient of average skidding distance according to the existing road network in Alikia Soltan forest of Iran Abstract: One of the factors in planning forest roads is average skidding distance which is calculated in projects from the map, according to forest road density, however it has a low accuracy. In this study real average skidding distance and theoretical average skidding distance were measured to determine a correction coefficient in Alikia Soltan forest in Hyrcanian forest. In this study real average skidding distance was obtained by putting a meter on the axes of trails. Moreover, theoretical average skidding distance was calculated by means of road density according to the formula. Skid trails were recorded by GPS and overlaid to a topographic map by means of ArcGIS software. Results indicated that for the study area with the average slope of 27% and road density of 10.32 the correction coefficient is 2.1. Keywords: theoretical average skidding distance, real average skidding distance, skid trails Journal: Journal of Forest Science Pages: 475-478 Volume: 59 Issue: 12 Year: 2013 DOI: 10.17221/87/2012-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/87/2012-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201312-0002.txt Handle: RePEc:caa:jnljfs:v:59:y:2013:i:12:id:87-2012-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M.R. Ghaffariyan Author-Workplace-Name: Australian Forest Operations Research Alliance (AFORA), University of the Sunshine Coast, Maroochydore DC, Australia Author-Name: M. Brown Author-Workplace-Name: Australian Forest Operations Research Alliance (AFORA), University of the Sunshine Coast, Maroochydore DC, Australia Title: Selecting the efficient harvesting method using multiple-criteria analysis: A case study in south-west Western Australia Abstract: Different factors can impact on the timber harvesting methods including stand characteristics, ground conditions, extraction distance, climate, silvicultural treatments and social interests. The multiple-criteria analysis is an effective methodology for helping foresters decide what system to apply depending on their operations specifications. Four harvesting methods were compared in Western Australian Eucalypt plantations including cut-to-length (CTL), in-field chipping using a delimbing and debarking flail integrated with the chipper (IFC-DDC), in-field chipping using a chipper with a separate flail machine for delimbing and debarking (IFC-F/C) and whole tree to roadside (WTR). The decision criterions consisted of total operating cost (from stand to mill gate), yield per ha, harvesting residues, fuel consumption and bark content of the chips. The Promethee method was used to evaluate the alternatives using Decision Lab software. Based on the results, the IFC-DCC was the best harvest method while WTR method was the worst harvesting alternative in the case study area. IFC-DCC method resulted in the lowest operating cost and the highest recovered yield per ha compared to the other harvesting methods. Keywords: harvesting method, cut-to-length, in-field chipping, operating costs, yield, multiple-criteria analysis Journal: Journal of Forest Science Pages: 479-486 Volume: 59 Issue: 12 Year: 2013 DOI: 10.17221/45/2013-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/45/2013-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201312-0003.txt Handle: RePEc:caa:jnljfs:v:59:y:2013:i:12:id:45-2013-JFS Template-Type: ReDIF-Article 1.0 Author-Name: A. Parsakhoo Author-Workplace-Name: Department of Forestry, Faculty of Forest Sciences, Gorgan Agricultural Sciences and Natural Resources University, Gorgan, Iran Author-Name: S.A. Hosseini Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Title: Analytical hierarchy process to choose the best earthwork machine in northern forests of Iran Abstract: This study attempts to use the analytical hierarchy process to choose the most appropriate earthwork machine for slope classes of 30-50% and 50-70%. Required data were collected by pairwise comparison as questionnaires filled by experts of forest engineering. Results showed that cross-sections and grade line (Technical criteria), soil excavation and displacement (Environmental criteria), production rate and multi-application (Operational criteria), production cost (Economic criteria) with the respective weights of 0.345, 0.345, 0.136, 0.058, 0.058 and 0.058 were the most important criteria for choosing the earthwork machines in the slope class of 30-50%. These coefficients for the slope class of 50-70% were 0.329, 0.329, 0.174, 0.056, 0.056 and 0.056, respectively. Overall priority of bulldozer in slope classes of 30-50% and 50-70% was 0.51 and 0.48, respectively. Therefore, in slope class of 30-50% bulldozer and in slope class of 50-70% hydraulic excavator must be selected for earthwork operation. Keywords: best selection, earthwork machine, environmental criteria, analytical hierarchy process, northern forests Journal: Journal of Forest Science Pages: 487-492 Volume: 59 Issue: 12 Year: 2013 DOI: 10.17221/44/2013-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/44/2013-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201312-0004.txt Handle: RePEc:caa:jnljfs:v:59:y:2013:i:12:id:44-2013-JFS Template-Type: ReDIF-Article 1.0 Author-Name: E. Kula Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: R. Kajfosz Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: J. Polívka Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Title: Attractiveness of Picea pungens to the bark beetle species Ips amitinus (Eichh.) and Pityogenes chalcographus (L.) Abstract: Only two cambioxylophagous species (Ips amitinus and Pityogenes chalcographus) were found on sections of Picea pungens and Picea abies that belong to economically important pests of Norway spruce. Representatives of the Isarthron sp. (Cerambycidae) were developed on the examined sections of both P. abies and P. pungens. The monitoring of attractiveness of the spruce species P. pungens and P. abies to cambioxylophages revealed that P. pungens was more intensively attacked by I. amitinus while P. chalcographus was more abundant on P. abies. Both bark beetle species preferred shaded parts of tree trunks, although their development was more successful on the sun-exposed side. On P. pungens, abundance of P. chalcographus decreased and abundance of I. amitinus increased with increasing trunk volume. Blue spruce was more attractive to Isarthron sp. compared to Norway spruce. Keywords: Krušné hory Mts., Picea alba Journal: Journal of Forest Science Pages: 493-502 Volume: 59 Issue: 12 Year: 2013 DOI: 10.17221/70/2013-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/70/2013-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201312-0005.txt Handle: RePEc:caa:jnljfs:v:59:y:2013:i:12:id:70-2013-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Merganič Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: R. Marušák Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: K. Merganičová Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: R. Stolariková Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: L. Tipmann Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Relation between selected indicators of forest stand diversity and quality of timber production in young stands aged up to 40 years Abstract: The present study examines the relationships between the indicators of tree species and structural diversity and the quality of timber production in young even-aged forest stands with the average age below 40 years. The study is based on the forest inventory data from University Forest Enterprise Kostelec nad Černými lesy, Czech Republic, performed from 2009 to 2011. The examined young stands were recorded in 256 sample plots representing 21.2% of the enterprise area. On each sample plot, we quantified 171 partial biodiversity indicators. In total, we analysed 16,416 different variants of the relationship between the diversity indicator and the quality of timber production. The analysis revealed that similarity indicators such as the range of tree heights, Canberra distance, Bray and Curtis index, and index of species evenness and heterogeneity were the most frequent basic indicators occurring in significant correlations. The results indicate a positive relationship between the proportions of assortments in quality classes I to IV and stand diversity expressed by the number of tree species and Canberra distance. Keywords: species and structural diversity, managed forest, assortment Journal: Journal of Forest Science Pages: 503-513 Volume: 59 Issue: 12 Year: 2013 DOI: 10.17221/67/2013-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/67/2013-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201312-0006.txt Handle: RePEc:caa:jnljfs:v:59:y:2013:i:12:id:67-2013-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Riedl Author-Workplace-Name: Department of Forestry Economics and Management, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: L. Šišák Author-Workplace-Name: Department of Forestry Economics and Management, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Analysis of the perceived condition of forests in the Czech Republic Abstract: A realistic perception of the condition of forests, and the attributes of the forestry sector, by the public constitutes one of the basic prerequisites for successful implementation of forest policy in any country. Although data objectively demonstrate that the condition of Czech forests has improved, opinion polls show a gap between the public perception of the condition of Czech forests and the real status of these forests. The reasons for the discrepancy between reality and the perception of the public, and between the results of different surveys, are analysed. The most significant differences were found in perceptions of damage and threats to forests. The effectiveness of communication about forest policy is discussed, and some ways to create more effective communication are examined. Keywords: forest policy, communication, opinion poll, public perception, Czech Republic Journal: Journal of Forest Science Pages: 514-519 Volume: 59 Issue: 12 Year: 2013 DOI: 10.17221/64/2013-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/64/2013-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201312-0007.txt Handle: RePEc:caa:jnljfs:v:59:y:2013:i:12:id:64-2013-JFS