Template-Type: ReDIF-Article 1.0
Author-Name: P. Hlaváčková
Author-Workplace-Name: Department of Forest and Wood Products Economics and Policy, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Author-Name: D. Březina
Author-Workplace-Name: Department of Forest and Wood Products Economics and Policy, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Title: Economic evaluation of the recreational use of forests: A case study of the Training Forest Enterprise Masaryk Forest Křtiny
Abstract: The objective of the article is to evaluate the results of a questionnaire survey carried out in forest districts of the Training Forest Enterprise Masaryk Forest Křtiny (TFE Křtiny) within research focused on economic evaluation of the recreational potential of the TFE Křtiny. The article is aimed at surveying the willingness of visitors to the area to pay for the use of the recreational function of forests and evaluation of the used method. The evaluated part of the questionnaire survey was based on the contingent valuation method examining the willingness of respondents to pay for recreational function. It was found by the results of the questionnaire survey that visitors are not very willing to pay for recreational function and it is so especially because forests in the area of the TFE Křtiny are perceived as public assets and thus access to them should be free. Furthermore, there were some problems with the method used. Thus it is necessary to find a new way of evaluating the recreational potential of the area.
Keywords: economics, forestry, questionnaire survey, recreational function, methods of valuation, willingness to pay
Journal: Journal of Forest Science
Pages: 389-398
Volume: 62
Issue: 9
Year: 2016
DOI: 10.17221/30/2016-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/30/2016-JFS.html
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Handle: RePEc:caa:jnljfs:v:62:y:2016:i:9:id:30-2016-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: M. Pirikiya
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
Author-Name: H. Amirnejad
Author-Workplace-Name: Department of Agricultural Economics, Faculty of Agricultural Engineering, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
Author-Name: J. Oladi
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
Author-Name: K. Ataie Solout
Author-Workplace-Name: Department of Agricultural Economics, Faculty of Agriculture, University of Zabol, Zabol, Iran
Title: Determining the recreational value of forest park by travel cost method and defining its effective factors
Abstract: Considering the importance of recreation and excursions in household's basket of expenditures on the one hand, and not paying attention to the economic value of recreational function for natural resources and environment as non-market goods on the other hand, this paper was written with the aim of estimating the recreational value of Shahid Zare Sari Forest Park when using the individual travel cost method. Requested data sets were obtained by completing questionnaires from 302 individuals who visited the above-mentioned park in 2012-2013. In the individual travel cost method, for the investigation of distributional effects of variables on the number of travels, a linear regression model was applied. For this purpose the travel generation function using linear, double log, linear-log and log-linear forms was estimated. Among these forms, according to the econometrical parameter, a linear function was selected and parameters were estimated based on the method of ordinary least squares. The consumer surplus was 12.53 USD per each visit and the annual recreational value of 72,500 people who visited the park annually was 52,558 USD.ha-1. The findings also showed that the involved variables, travel costs, income and visitor's distance were statistically significant at 1% level and family and education were significant at 5% level. Results revealed that forest parks have a considerable recreational value that, from this point of view, can help programmers and executives, social and economic managers in the preservation planning and sustainable utilization of natural resources.
Keywords: Shahid Zare Forest Park, travel function, economic value, consumer surplus
Journal: Journal of Forest Science
Pages: 399-406
Volume: 62
Issue: 9
Year: 2016
DOI: 10.17221/12/2016-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/12/2016-JFS.html
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Handle: RePEc:caa:jnljfs:v:62:y:2016:i:9:id:12-2016-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: B. Sotoudeh Foumani
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Iran
Author-Name: S. Mohammadi Limaei
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Iran
Author-Name: T. Rostami Shahraji
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Iran
Title: Investigation of wood production and trading in Iran
Abstract: The relation between wood export and import of Iran and a number of major macroeconomic variables, such as oil price, gross domestic production, population, exchange rate, unemployment rate, inflation and domestic wood production during 1980-2014 were described. Pearson's correlation coefficient and multiple regression analysis were used for data analysis. The results showed that there is a significant relation at a significance level of 5% between wood export as a dependent variable and oil price, GDP, population, exchange rate and domestic wood production as independent variables. Meanwhile, there is also a significant relation between wood import and oil price, exchange rate and domestic wood production. The findings also indicate that oil price as an independent variable has the highest effect on wood import in Iran during the studied period.
Keywords: Iranian forest sector, timber market analysis, correlation, regression
Journal: Journal of Forest Science
Pages: 407-412
Volume: 62
Issue: 9
Year: 2016
DOI: 10.17221/8/2016-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/8/2016-JFS.html
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Handle: RePEc:caa:jnljfs:v:62:y:2016:i:9:id:8-2016-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: K. Ahmadi
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran
Author-Name: S.J. Alavi
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran
Title: Generalized height-diameter models for Fagus orientalis Lipsky in Hyrcanian forest, Iran
Abstract: In this study, 39 generalized height-diameter prediction models were developed for Oriental beech (Fagus orientalis Lipsky) in the Hyrcanian forest in Iran. Data were collected from 75 permanent sample plots in uneven-aged stands of F. orientalis. A total of 1,067 individual tree height-diameter measurements were available for this study. For model testing a 10-fold cross validation method was used. The goodness of fit of the models was evaluated using six statistical measures including Akaike information criteria, Bayesian information criterion, root mean square error (RMSE), mean error, R2 and R2adj. Results showed that the R2 ranged from 0.62 to 0.78 and RMSE from 3.3 to 4.7 in the validation phase. Considering all the performance criteria, a model which uses DBH, dominant height, basal area per hectare and number of trees per hectare was found to be the best model to predict the height of Oriental beech from these data.
Keywords: Oriental beech, dominant height, forest models, evaluation, validation
Journal: Journal of Forest Science
Pages: 413-421
Volume: 62
Issue: 9
Year: 2016
DOI: 10.17221/51/2016-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/51/2016-JFS.html
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Handle: RePEc:caa:jnljfs:v:62:y:2016:i:9:id:51-2016-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: A.S. Emami
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran
Author-Name: M. Tabari Kouchaksaraei
Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran
Author-Name: N. Bahramifar
Author-Workplace-Name: Department of Environment, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran
Author-Name: A. Salehi
Author-Workplace-Name: Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
Title: Gas exchange responses of two poplar clones (Populus euramericana (Dode) Guinier 561/41 and Populus nigra Linnaeus 63/135) to lead toxicity
Abstract: To evaluate the lead tolerance of Populus euramericana (Dode) Guinier 561/41 and Populus nigra Linnaeus 63/135 clones in relation to photosynthetic efficiency, we measured physiological parameters of the two poplar clones exposed to Pb treatments. The pot experiment was established in a roofed place in a completely randomized design, with 5 Pb treatments (0, 0.5, 1, 1.5 and 2 g Pb.kg-1) per poplar clone. After 3 months, photosynthetic rate (A), transpiration rate (E), stomatal conductance, intercellular CO2 concentration (Ci), leaf water potential were measured and water use efficiency (WUE) and mesophyll conductance (gm) were computed. Results revealed that increasing Pb concentrations in soil reduced all physiological parameters of the two poplar clones, except Ci. At all Pb treatments A and E, and at a concentration of 0.5 g Pb.kg-1 WUE and gm of P. euramericana plants were significantly higher than those of P. nigra plants. On the other hand, while a reduction in most physiological parameters of P. euramericana plants took place at a concentration of 1 g Pb.kg-1 and at higher concentrations, in P. nigra plants these reductions were from a concentration of 0.5 g Pb.kg-1. With respect to physiological parameters, P. euramericana 561/41 clone was more tolerant of Pb than P. nigra 63/135 clone, therefore it can be considered as a suitable species in phytoremediation of lead-contaminated soils.
Keywords: physiological parameters, phytoremediation, soil contamination, heavy metals, stress
Journal: Journal of Forest Science
Pages: 422-428
Volume: 62
Issue: 9
Year: 2016
DOI: 10.17221/91/2016-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/91/2016-JFS.html
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Handle: RePEc:caa:jnljfs:v:62:y:2016:i:9:id:91-2016-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: M. Stárová
Author-Workplace-Name: Department of Trade and Finances, Faculty of Economics and Management, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: H. Čermáková
Author-Workplace-Name: Department of Trade and Finances, Faculty of Economics and Management, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: T. Hlavsa
Author-Workplace-Name: Department of Statistics, Faculty of Economics and Management, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: H. Vostrovská
Author-Workplace-Name: Department of Trade and Finances, Faculty of Economics and Management, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: M. Levá
Author-Workplace-Name: Department of Trade and Finances, Faculty of Economics and Management, Czech University of Life Sciences Prague, Prague, Czech Republic
Title: Evaluation of applicability of IAS 41 - Agriculture to the valuation of growing forest stands and their accounting treatment in the Czech Republic
Abstract: The paper aims to evaluate the applicability of International Accounting Standard (IAS) 41 to the valuation of a growing stock of stands and entering its value in the corporate accounting system in the Czech Republic. In this context, IAS 41 is analysed in detail with focus on the method of reporting of the forest value in the accounting. At the same time a questionnaire survey is conducted among the forestry sector experts on the topic of willingness to report the forest value in statements. Based on the findings, an alternative solution to the application of IAS 41 to the forest accounting treatment, which would be potentially applicable, is proposed in the paper. The questionnaire survey (n = 317) has found that there is an increasing tendency towards the willingness to report the forest in the statements, especially in the organizations which simultaneously meet the statutory duty to disclose this value in the notes to the statements, and it is also recognized that this willingness does not depend on the legal form of organization.
Keywords: fair value, forestry accounting, International Accounting Standards, International Financial Reporting Standards, present value
Journal: Journal of Forest Science
Pages: 429-440
Volume: 62
Issue: 9
Year: 2016
DOI: 10.17221/59/2016-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/59/2016-JFS.html
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Handle: RePEc:caa:jnljfs:v:62:y:2016:i:9:id:59-2016-JFS