Template-Type: ReDIF-Article 1.0 Author-Name: J. Novák Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště-Strnady, Opočno Research Station, Opočno, Czech Republic Author-Name: D. Dušek Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště-Strnady, Opočno Research Station, Opočno, Czech Republic Author-Name: M. Slodičák Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště-Strnady, Opočno Research Station, Opočno, Czech Republic Title: Quantity and quality of litterfall in young oak stands Abstract: Litterfall, an important component of the nutrient cycle in forest ecosystems, was measured for 9 years in young oak stands on two localities classified as beech-oak climax (Fageto-Quercetum). We estimated that about 4 Mg of dry mass per hectare fell each year. Nutrient content in the litterfall represents annually per hectare approximately 40-55 kg of nitrogen, 2-3 kg of phosphorus, 7-16 kg of potassium, 41-73 kg of calcium and 6-7 kg of magnesium. The amount of litterfall is positively correlated with stand basal area and with the death of suppressed tress with small crowns. We found a positive correlation between annual litterfall and the sum of precipitation and a negative correlation between annual litterfall and temperature in summer. Keywords: Quercus petraea (Matt.) Liebl., climatic factors, nutrients Journal: Journal of Forest Science Pages: 219-225 Volume: 60 Issue: 6 Year: 2014 DOI: 10.17221/2/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201406-0001.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:6:id:2-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Ševčík Author-Workplace-Name: Faculty of Forestry and Wood S ciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: M. Hájek Author-Workplace-Name: Faculty of Forestry and Wood S ciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: A. Mikulková Author-Workplace-Name: Faculty of Forestry and Wood S ciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Specifics in the introduction of sustainability reporting by companies in the forestry sector Abstract: Sustainability reporting is constantly paid attention by companies for its economic, environmental and social benefits. It supports making use of the wide potential for further development of enterprises and society. Individual sectors use types of indicators that correspond to their specifics. It is also the case of the forestry sector, which is especially characterized by a number of non-market outputs. However, we can find also other specific indicators that are relevant to forest management. The paper proposes indicators for sustainability reporting, which are not part of usual methodologies. These indicators will contribute not only to the formal preparation of sustainability reporting, but so that its benefits would be of significant influence on the development of forest enterprises and the forestry sector using its potential in all areas. Keywords: ecosystem services, forest services, nonmarket outputs, forest enterprise, sustainable indicators Journal: Journal of Forest Science Pages: 226-235 Volume: 60 Issue: 6 Year: 2014 DOI: 10.17221/33/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/33/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201406-0002.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:6:id:33-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: A.A. Vahedi Author-Workplace-Name: Faculty of Agriculture and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, Iran Author-Name: A. Mataji Author-Workplace-Name: Faculty of Agriculture and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, Iran Author-Name: S. Babayi-Kafaki Author-Workplace-Name: Faculty of Agriculture and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, Iran Author-Name: J. Eshaghi-Rad Author-Workplace-Name: Faculty of Natural Resources, Urmia University, Urmia, Iran Author-Name: S.M. Hodjati Author-Workplace-Name: Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Author-Name: A. Djomo Author-Workplace-Name: Faculty of Arts and Science, Department of Geography, Queen's University, Kingston, Ontario, Canada Title: Allometric equations for predicting aboveground biomass of beech-hornbeam standsin the Hyrcanian forests of Iran Abstract: A better understanding of the carbon biomass from forests is needed to improve both models and mitigation efforts related to the global C cycle and greenhouse gas mitigation. Despite the importance of Hyrcanian forests for biodiversity conservation, no study with biomass destruction has been done to predict biomass and carbon pools from this forest. Mixed-specific regression equations with 45 sample trees using different input variables such as diameter, height and wood density were developed to estimate the aboveground biomass of beech-hornbeam stands. All the sample trees were harvested and the diameter at breast height (DBH) spanned from 31 to 104 cm so as to represent the diameter distribution reported in the beech-hornbeam stand management. Using only diameter as an input variable, the stands regression model estimates the aboveground biomass of the stand with an average deviation of 19% (R2adj = 0.92; SEE = 0.22). Adding height as the second explanatory variable slightly improved the estimation with an average deviation of 18% (R2adj = 0.95; SEE = 0.17). Adding only height or wood density did not improve significantly the estimations. Using the three variables together improved the precision of bole biomass prediction of stands with an average deviation of 10.3% (R2adj = 0.965; SEE = 0.167). 68% of the observed variation in the aboveground biomass of beech-hornbeam stands was explained only by diameter. Keywords: climate change mitigation, carbon stock Journal: Journal of Forest Science Pages: 236-247 Volume: 60 Issue: 6 Year: 2014 DOI: 10.17221/39/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/39/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201406-0003.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:6:id:39-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: A. Kabeš Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: J. Dvořák Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: P. Natov Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Operation times in John Deere 1110 E forwarders in regeneration felling Abstract: We calculated high-power forwarder productivity in regeneration felling with the objective to set long-term work plans. Based on the time studies of the forwarder operator's work operation the operation time consumption was calculated and operation standards for the studied type of forwarder were designed. The standard values were determined based on the volume weight of harvested timber and the forwarding distance. The resulting time consumption required for forwarding 1 m3 of timber, whose mean tree volume is 0.30-0.99 m3.stem-1, and upon forwarding distance of 100-1,000 m ranges from 0.05-0.09 Nh.m-3. Keywords: forwarder, work efficiency, forwarding distance, volume weight, productivity, time consumption Journal: Journal of Forest Science Pages: 248-253 Volume: 60 Issue: 6 Year: 2014 DOI: 10.17221/53/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/53/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201406-0004.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:6:id:53-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: S. Mohammadi Limaei Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Someh Sara, Iran Author-Name: H. Ghesmati Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Someh Sara, Iran Author-Name: R. Rashidi Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Islamic Azad University, Lahijan Branch, Iran Author-Name: N. Yamini Author-Workplace-Name: Office of Plans & Programming, Zanjan Regional Water Company, Zanjan, Iran Title: Economic evaluation of natural forest park using the travel cost method (case study; Masouleh forest park, north of Iran) Abstract: We evaluated recreational and socioeconomic values of Masouleh forest park, north of Iran. Travel Cost Method (TCM) or Clawson method was used for evaluation. Therefore, 96 questionnaires were distributed among the visitors. The results indicated that the variables such as travel time to the park, travel costs, age and education were effective variables in using the park. The results show that there is a significant relation between travel time and the number of visitors whereas by increasing travel time the number of visitors decreased. Furthermore, there is a significant relation between the number of visitors as a dependent variable and travel costs whereas when the travel cost increases, the number of visitors decreases. Results indicated that the willingness to pay decreased by increasing the entrance fee. The models estimated an average willingness to pay 12,500 Iranian Rials per visit. The results also indicated that the average round trip travel cost was 85.5 (10,000 Iranian Rials). Keywords: willingness to pay, recreational value Journal: Journal of Forest Science Pages: 254-261 Volume: 60 Issue: 6 Year: 2014 DOI: 10.17221/84/2013-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/84/2013-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201406-0005.txt Handle: RePEc:caa:jnljfs:v:60:y:2014:i:6:id:84-2013-JFS