Template-Type: ReDIF-Article 1.0 Author-Name: P. Král Author-Workplace-Name: Department of Wood Science, Mendel University in Brno, Brno, Czech Republic Author-Name: P. Klímek Author-Workplace-Name: Department of Wood Science, Mendel University in Brno, Brno, Czech Republic Author-Name: D. Děcký Author-Workplace-Name: Department of Wood Science, Mendel University in Brno, Brno, Czech Republic Title: Comparison of the bond strength of oak (Quercus L.) and beech (Fagus sylvatica L.) wood glued with different adhesives considering various hydrothermal exposures Abstract: The investigation of the hydrothermal exposure effect on the glue-line strength is obvious when outdoor application of wood products is in option. In our research the bonding quality of oak (Quercus L.) and beech (Fagus sylvatica L.) wood was tested in different conditions according to EN 205. After each exposure the lap joint test specified the shear strength of wood bonded with PVAC and PU adhesive. In our research different behaviour concerning both types of adhesives and selected wood species was observed. The most significant decrease (-80%) of the shear strength was found when the PVAC was used to bond oak wood. Therefore the PVAC adhesive is most likely less suitable for the bonding of the block board in outdoor conditions. On the contrary, the best results in the same conditions were obtained by the oak when the polyurethane adhesive was used. It indicates that the PU adhesive is more suitable for the bonding of oak wood. Considering results of beech wood, there were not found this interaction. Keywords: adhesion of wood, hydrothermal exposure, oak, beech Journal: Journal of Forest Science Pages: 189-192 Volume: 61 Issue: 5 Year: 2015 DOI: 10.17221/95/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/95/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201505-0001.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:5:id:95-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Pir Bavaghar Author-Workplace-Name: Faculty of Natural Resources, Center for Research & Development of Northern Zagros Forests, University of Kurdistan, Sanandaj, Iran Title: Deforestation modelling using logistic regression and GIS Abstract: A methodology has been used by means of which modellers and planners can quantify the certainty in predicting the location of deforestation. Geographic information system and logistic regression analyses were employed to predict the spatial distribution of deforestation and detects factors influencing forest degradation of Hyrcanian forests of western Gilan, Iran. The logistic regression model proposed that deforestation is a function of slope, distance to roads and residential areas. The coefficients for the explanatory variables indicated that the probability of deforestation is negatively related to slope, distance from roads and residential areas. Although the distance factor was found to be a contributor to deforestation, its effect is lower than that of slope. The correlates of deforestation may change over time, and so the spatial model should be periodically updated to reflect these changes. Like in any model, the quality may be improved by introducing the new variables that may contribute to explaining the spatial distribution of deforestation. Keywords: manmade areas, physiographic factors, roads, probability, Hyrcanian forests Journal: Journal of Forest Science Pages: 193-199 Volume: 61 Issue: 5 Year: 2015 DOI: 10.17221/78/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/78/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201505-0002.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:5:id:78-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M.J. Asif Author-Workplace-Name: Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Author-Name: M.A.T. Ariffin Author-Workplace-Name: Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Author-Name: H.M. Yit Author-Workplace-Name: Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Author-Name: M. Wong Author-Workplace-Name: Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Author-Name: M.Z. Abdullah Author-Workplace-Name: Forestry Biotechnology Division, Forest Research Institute Malaysia, Kepong, Selangor Darul Ehsan, Malaysia Author-Name: N. Muhammad Author-Workplace-Name: Forestry Biotechnology Division, Forest Research Institute Malaysia, Kepong, Selangor Darul Ehsan, Malaysia Author-Name: W. Ratnam Author-Workplace-Name: Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Title: Utilization of STMS markers to verify admixture in clonal progenies of Acacia mapping populations and relabelling using assignment tests Abstract: Clonal propagation is widely used for Acacia breeding and commercial planting. When a large number of clones are handled, problems with mixings are commonly confronted. Detection of admixture in Acacia clones based on morphology particularly at seedling stage is not feasible. However, molecular markers are commonly used to test the genetic fidelity of planting materials. This paper reports the detection of mislabelling in Acacia clonal progenies using a sequence tagged microsatellite (STMS) genetic marker system. Progenies from two mapping populations were clonally propagated and field planted for phenotypic and genotypic evaluation at three locations in Malaysia: (a) Forest Research Institute Malaysia field station at Segamat, Johor, (b) Borneo Tree Seeds and Seedlings Supplies Sdn, Bhd. (BTS) field trial site at Bintulu, Sarawak and (c) Asiaprima RCF field trial site at Lancang, Pahang. During field planting mislabelling was reported at Segamat, Johor and similar was suspected for Bintulu, Sarawak. Screening revealed mislabelling events in both populations. A total of 18.52% mislabelling incidences were detected from both sites, of which 17.39% of mislabelling was detected for fibre length cross and 20% for wood density cross. The assignment test efficiently reestablished the mislabelled ramets to the respective clones. Future studies should be focused on the utilization of a higher number of markers, e.g. SSR or SNPs to increase a discrimination power. A high number of SNPs can be generated within a short period of time compared to SSR, but SNPs could be cost inhibitory. Multiplexing microsatellite combinations along with sample bulking will further reduce the processing time when screening large populations. The use of assignment test would efficiently assign mislabelled individuals to the respective clones. It is concluded that checking for mislabelling is imperative for future breeding and for analyses such as QTL mapping where a correlation between genotypic and phenotypic data is determined. Keywords: tree breeding, DNA markers, quantitative trait loci (QTL), linkage mapping Journal: Journal of Forest Science Pages: 200-209 Volume: 61 Issue: 5 Year: 2015 DOI: 10.17221/103/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/103/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201505-0003.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:5:id:103-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: S.A.O. Hosseini Author-Workplace-Name: Department of Forestry and Forest Economics, University of Tehran, Tehran, Iran Author-Name: M. Akbarimehr Author-Workplace-Name: Department of Forestry, Sari Agricultural Sciences and Natural Resources University, Mazandaran, Iran Author-Name: S.F. Emadian Author-Workplace-Name: Gorgan Agricultural Sciences and Natural Resources University, Golestan, Iran Author-Name: A. Agh Author-Workplace-Name: Department of Forestry, Sari Agricultural Sciences and Natural Resources University, Mazandaran, Iran Title: Considering the soil compaction status on logging areas in a Hyrcanian forest Abstract: This paper deals with the issue of soil compaction during timber harvesting operations on cutting areas. Soil compaction was assessed following the logging operation in Darabkola forest area by measuring soil bulk density. In this research, a completely random sampling method was used to assess the resulting changes in soil bulk density. Soil bulk density was measured using bulk density sampler on felling, bucking, delimbing and control areas. The results showed that the bulk density value in the top soil layer increased with increasing tree volume and was not dependent on the terrain slope on the felling area. Also, there was a significant relationship between the bulk density value of felling area and tree volume. Further analysis showed that there was no significant relationship between bulk density values on felling, bucking, delimbing and control areas. It was shown that careful harvesting planning, restriction, skidding and directional felling limited the soil compaction and helped the soil conservation. Keywords: cutting area, slope, timber harvesting, tree volume Journal: Journal of Forest Science Pages: 210-215 Volume: 61 Issue: 5 Year: 2015 DOI: 10.17221/48/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/48/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201505-0004.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:5:id:48-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: P. Kupec Author-Workplace-Name: Department of Landscape Management, Mendel University in Brno, Brno, Czech Republic Author-Name: A. Kučera Author-Workplace-Name: Department of Geology and Pedology, Mendel University in Brno, Brno, Czech Republic Author-Name: J. Kadavý Author-Workplace-Name: Department of Forest Management and Applied Geoinformatics, Mendel University in Brno, Brno, Czech Republic Author-Name: M. Kneifl Author-Workplace-Name: Department of Forest Management and Applied Geoinformatics, Mendel University in Brno, Brno, Czech Republic Title: Contribution to a discussion on the influence of coppicing on soil environment Abstract: In 2011, soil properties and stand condition of four forest stands were evaluated at the Křtiny Training Forest Enterprise (Czech Republic). The stands were managed on a long-term basis as an oak-hornbeam coppice undergoing conversion to high forest over the last 110 years approximately. The aim of the study was to compare the current condition of stands and soils with that of 1959. The stands were subjected to (a) an analysis of changes in the species composition during the conversion to high forest, and (b) a soil survey carried out using restored soil pits set up in 1959, as well as shallow pits. Our results indicate significant differences in the content of K2O and humus stability index according to Hock between 1959 and 2011. The differences in soil properties are caused rather by tree species composition and soil morphology then by forest management, which was concluded as a substantial result within the study. No major changes in soil properties were detected in relation to changes in management. No attributes of soil degradation have been identified. Keywords: high forest, conversion, soil conditions, nutrient-rich soils Journal: Journal of Forest Science Pages: 216-224 Volume: 61 Issue: 5 Year: 2015 DOI: 10.17221/118/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/118/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201505-0005.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:5:id:118-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: V. Podrázský Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: O. Holubík Author-Workplace-Name: Research Institute for Soil and Water Conservation, Department of Soil Science and Soil Conservation, Prague-Zbraslav, Czech Republic Author-Name: J. Vopravil Author-Workplace-Name: Research Institute for Soil and Water Conservation, Department of Soil Science and Soil Conservation, Prague-Zbraslav, Czech Republic Author-Name: T. Khel Author-Workplace-Name: Research Institute for Soil and Water Conservation, Department of Soil Science and Soil Conservation, Prague-Zbraslav, Czech Republic Author-Name: W.K. Moser Author-Workplace-Name: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Flagstaff, Arizona, USA Author-Name: H. Prknová Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Effects of afforestation on soil structure formation in two climatic regions of the Czech Republic Abstract: The aim of this study was to determine the effect of agricultural land afforestation on soil characteristics. Two sites in two regions of the Czech Republic were evaluated, at lower as well as higher submountain elevations: in the regions of the Orlické hory Mts. and Kostelec nad Černými lesy, afforested, arable and pasture lands were compared for basic chemical and physical characteristics. It was determined: pH, CEC, exchangeable nutrients, SOC, bulk density, volume density, porosity (differentiated by pore size), water conductivity and soil aggregate stability. This study demonstrated the important influence of previous land use upon soil characteristics. The characteristics of the arable horizon can persist for many years; in forests, the mineral horizons (15-30 cm) can persist within 15-30 years after afforestation. Afforestation, which caused an increase in soil porosity by decreasing reduced bulk density and increasing capillary and gravitational pores (increasing the water-holding capacity and soil air capacity), is important for maintaining the soil stability. The positive effect on infiltration and retention capacity resulted not only from the presence of a forest overstorey, but also from the presence of permanent grass cover of pasture land. Keywords: water-stable aggregates (WSA), mean weighted diameter (MWD) Journal: Journal of Forest Science Pages: 225-234 Volume: 61 Issue: 5 Year: 2015 DOI: 10.17221/6/2015-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/6/2015-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201505-0006.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:5:id:6-2015-JFS