Journal of Forest Science, 2017 (vol. 63), issue 2
Evaluation of the genetic diversity of selected Fagus sylvatica L. populations in the Czech Republic using nuclear microsatellitesOriginal Paper
Helena CVRČKOVÁ, Pavlína MÁCHOVÁ, Lucie POLÁKOVÁ, Olga TRČKOVÁ
J. For. Sci., 2017, 63(2):53-61 | DOI: 10.17221/88/2016-JFS 
Fagus sylvatica Linnaeus (European beech), the ecologically and economically most important broadleaved tree species in the Czech Republic, was strongly reduced in the past. Today there are efforts to increase the proportion of beech to ensure optimal forest tree species composition. When extensively reintroducing beech, it is important to acquire more detailed knowledge of genetic diversity. Thirteen important beech populations in different stands in the territory of the Czech Republic were genotyped using 12 polymorphic nuclear microsatellite markers. The genotypic data from adult trees imply genetic differences between the populations....
Decision support system to find a skid trail network for extracting marked treesOriginal Paper
Aidin PARSAKHOO, Mohsen MOSTAFA, Shaban SHATAEE, Majid LOTFALIAN
J. For. Sci., 2017, 63(2):62-69 | DOI: 10.17221/36/2016-JFS
Careful planning of skid trails as wood extraction routes in forests is an ongoing task and necessary for minimizing the environmental damage. The main objective of this study is to find skid trails to extract marked trees from stand sites to landing sites using a GIS-based decision support system (DSS) and network analysis techniques, where environmental information is incorporated into the objective. The techniques were applied in a stand where single trees are felled in near-to-nature conditions. This system is called a single tree selection cutting method. Parameters considered for mapping the terrain stability include slope, soil and stream network....
Prevalence of burnout among forest workers in Mazandaran, IranOriginal Paper
Majid LOTFALIAN, Fatemeh SHEIKHMOONESI, Mahbobeh SABZI, Mahbobeh ABASPOUR, Saba PEYROV
J. For. Sci., 2017, 63(2):70-74 | DOI: 10.17221/111/2015-JFS
Burnout imposes consequences and costs on the organization and employees, such as frequent job and workplace replacement, frequent absenteeism and permissions, and reduced work quantity and quality. So it seems necessary to perform institutional interventions to reduce the staff burnout. The aim of the present study was to determine prevalence of burnout among forest workers in Mazandaran. This descriptive cross-sectional study was conducted on a sample of workers in the forests of Mazandaran province. Result showed that a significant proportion of workers had burnout in terms of the three dimensions of Maslach Burnout Inventory. 46.90% of respondents...
Evaluation of the provenance plot "Hrubá Skála" (Northern Bohemia) with grand fir at the age of 36 yearsOriginal Paper
Martin FULÍN, Petr NOVOTNÝ, Vilém PODRÁZSKÝ, František BERAN, Jaroslav DOSTÁL, Jan JEHLIČKA
J. For. Sci., 2017, 63(2):75-87 | DOI: 10.17221/79/2016-JFS
The article aims to evaluate the research provenance plot established in 1980 in locality No. 214 - Hrubá Skála (in the north of the Czech Republic), where nine provenances of grand fir (Abies grandis (Douglas ex D. Don) Lindley) provided in the framework of the International Union of Forest Research Organizations project, and one provenance of grand fir, Norway spruce, silver fir and Douglas-fir from a standard commercial source are tested. We present the results of tree height, stem DBH, stem volume production and health status after 36 years. The results correspond with similar experiments in the Czech Republic and abroad and suggest that...
Impact of plot size and model selection on forest biomass estimation using airborne LiDAR: A case study of pine plantations in southern SpainOriginal Paper
Rafael M. NAVARRO-CERRILLO, Eduardo GONZÁLEZ-FERREIRO, Jorge GARCÍA-GUTIÉRREZ, Carlos J. CEACERO RUIZ, Rocío HERNÁNDEZ-CLEMENTE
J. For. Sci., 2017, 63(2):88-97 | DOI: 10.17221/86/2016-JFS
We explored the usefulness of LiDAR for modelling and mapping the stand biomass of two conifer species in southern Spain. We used three different plot sizes and two statistical approaches (i.e. stepwise selection and genetic algorithm selection) in combination with multiple linear regression models to estimate biomass. 43 predictor variables derived from discrete-return LiDAR data (4 pulses per m2) were used for estimating the forest biomass of Pinus sylvestris Linnaeus and Pinus nigra Arnold forests. Twelve circular plots - six for each species - and three different fixed-radius designs (i.e. 7, 15, and 30 m)...
Investigating the variation of diameter and height of Populus sp. clone I-214 under various fertilization treatments in northern Greece - a case studyOriginal Paper
Stefanos STEFANOU, Athanasios PAPAIOANNOU, Dimosthenis SEILOPOULOS, Agapi PAPAZAFEIRIOU
J. For. Sci., 2017, 63(2):98-105 | DOI: 10.17221/95/2016-JFS
The study of young poplar tree characteristics like initial diameter and height as well as mineral fertilization that promotes the rapid growth of trees for biomass production was the aim of this research. In two forest nurseries of northern Greece, the growth of Populus sp. clone I-214 under five fertilization treatments per dosage was studied, i.e. (i) 120 kg (NH4)2SO4.ha-1, (ii) 200 kg (NH4)2SO4.ha-1, (iii) 150 kg (NH4)2SO4.ha-1 and 300 kg mixed fertilizer 11-15-15 (i.e. 11 kg N,...