Journal of Forest Science, 2014 (vol. 60), issue 6
Quantity and quality of litterfall in young oak standsOriginal Paper
J. Novák, D. Dušek, M. Slodičák
J. For. Sci., 2014, 60(6):219-225 | DOI: 10.17221/2/2014-JFS 
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...
Specifics in the introduction of sustainability reporting by companies in the forestry sectorOriginal Paper
M. Ševčík, M. Hájek, A. Mikulková
J. For. Sci., 2014, 60(6):226-235 | DOI: 10.17221/33/2014-JFS
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...
Allometric equations for predicting aboveground biomass of beech-hornbeam standsin the Hyrcanian forests of IranOriginal Paper
A.A. Vahedi, A. Mataji, S. Babayi-Kafaki, J. Eshaghi-Rad, S.M. Hodjati, A. Djomo
J. For. Sci., 2014, 60(6):236-247 | DOI: 10.17221/39/2014-JFS
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...
Operation times in John Deere 1110 E forwarders in regeneration fellingOriginal Paper
A. Kabeš, J. Dvořák, P. Natov
J. For. Sci., 2014, 60(6):248-253 | DOI: 10.17221/53/2014-JFS
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.
Economic evaluation of natural forest park using the travel cost method (case study; Masouleh forest park, north of Iran)Original Paper
S. Mohammadi Limaei, H. Ghesmati, R. Rashidi, N.Yamini
J. For. Sci., 2014, 60(6):254-261 | DOI: 10.17221/84/2013-JFS
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...