Research article

DOI: 10.15287/afr.2016.705

Impact of operational factors on fossil energy inputs in motor-manual tree felling and processing: results of two case studies

Gheorghe Ignea, Mohammad Reza Ghaffaryian, Stelian Alexandru Borz

Gheorghe Ignea
Transilvania University of Braşov, Faculty of Silviculture and Forest Engineering, Department of Forest Engineering, Forest Management Planning and Terrestrial Measurements, Şirul Beethoven, no. 1, 500123, Braşov, Romania
Mohammad Reza Ghaffaryian
Forest Industries Research Centre, University of Sunshine Coast, Locked Bag 4, Maroochydore DC, Queensland, 4558, Australia
Stelian Alexandru Borz
Transilvania University of Braşov, Faculty of Silviculture and Forest Engineering, Department of Forest Engineering, Forest Management Planning and Terrestrial Measurements, Şirul Beethoven, no. 1, 500123, Braşov, Romania. Email: stelian.borz@unitbv.ro

Online First: December 20, 2016
Ignea, G., Ghaffaryian, M., Borz, S. 2016. Impact of operational factors on fossil energy inputs in motor-manual tree felling and processing: results of two case studies. Annals of Forest Research DOI:10.15287/afr.2016.705


In many cases tree felling and processing operations are carried out motor-manually and knowledge about fossil fuel consumption and direct energy inputs when using such equipment is required for different purposes starting with operational costing and ending with environmental assessment of forest operations. In this study, fuel mixture, chain oil and direct fossil energy inputs were evaluated for two chainsaws which were used to fell and process trees in two silvicultural systems. The results of this study suggest that there is a strong dependence relation between selected tree size variables such as the diameter at breast height and tree volume on one hand and the fuel mixture, chain oil and direct fossil energy inputs when felling and processing broadleaved hardwood and resinous softwood trees on the other hand. For the broadleaved trees (mean tree volume of 1.50 m3 × tree-1, DBH of 45.5 cm and tree height of 21.84 m) the mean direct fossil energy input was of 3.86 MJ m-3 while for resinous trees (mean tree volume of 1.77 m3 tree-1, DBH of 39.28 cm and tree height of 32.49 m) it was of 3.93 MJ m-3. Other variables, including but not limited to the technology used, work experience and procedural pattern, may influence the mentioned figures and extensive studies are required to clarify their effects.


Balimunsi H., Grigolato S., Picchio R., Nyombi K., Cavalli R., 2012. Productivity and energy balance of forest plantation harvesting in Uganda. Forestry Studies in China 14 (4): 276-282. DOI: 10.1007/s11632-012-0404-y

Biondi P., Parano V., Pellizzi G., 1989. La richieste d'energia del sistema agricolo italiano [The energy requirements of the Italian agricultural system]. Progetto finalizzato energetic, 79 p.

Borz S.A., Ciobanu V.D., 2013. Efficiency of motor-manual felling and horse logging in small-scale firewood production. African Journal of Agricultural Research 8 (24): 3126-3135.

Calvo A., Manzone M., Spinelli R., 2013. Long term repair and maintenance cost of some professional chainsaws. Croatian Journal of Forest Engineering 34 (2): 265-272.

Dvořák J., Iordache E., 2010. Estimating the level of trees damages and financial losses by logging. Bulletin of the Transilvania University of Braşov 3(52): 37-46.

Ghaffariyan M.R., Naghdi R., Ghajar I., Nikooy M., 2013. Time prediction models and cost evaluation of cut-to-length (CTL) harvesting method in a mountainous forest. Small Scale Forestry 12: 181-192. DOI: 10.1007/s11842-012-9204-4

Ghaffariyan M.R., Sessions J., Brown M., 2012. Evaluating productivity, cost, chip quality and biomass recovery for a mobile chipper in Australian road side chipping operations. Journal of Forest Science 58 (2): 530-535.

Ghaffaryian M.R., Shobani H., 2007. Cost production study of motor-manual felling and processing of logs. Forest Science 3: 69-76.

Ciubotaru A., 1996. Exploatarea pădurilor [Forest harvesting]. Lux Libris Publishing House, Braşov, 351 p.

Giurgiu V., Decei I., Drăghiciu D., 2004. Metode şi tabele dendrometrice [Dendrometrical methods and tables]. Ceres Publishing House, Bucharest, 575 p.

Heinimann H.R., 2012. Life cycle assessment in forestry - State and perspectives. Croatian Journal of Forest Engineering 33 (2): 357-372.

Jourgholami M., Majnounian B., Zargham N., 2013. Performance, capability and costs of motor-manual tree felling in Hyrcanian hardwood forest. Croatian Journal of Forest Engineering 34 (2): 283-293.

Lindroos O., Burström L., 2010: Accident rates and types among self-employed private forest owners. Accident Analysis and Prevention 42: 1729-1735. DOI: 10.1016/j.aap.2010.04.013

Maesano M., Picchio R., Lo Monaco A., Neri F., Lasserre B., Marchetti M., 2013. Productivity and energy consumption in logging operation in a Cameroonian tropical forest. Ecological Engineering 57: 149-153. DOI: 10.1016/j.ecoleng.2013.04.013

Magagnotti N., Spinelli R., 2011. Financial and energy cost of low-impact wood extraction in environmentally sensitive areas. Ecological Engineering 37 (4): 601-606. DOI: 10.1016/j.ecoleng.2010.12.021

Magagnotti N., Spinelli R., (Eds.) 2012. COST Action FP0902 - Good practice guideline for biomass production studies. CNR IVALSA, Florence, Italy, 41 p.

Markewitz D., 2006. Fossil fuel carbon emissions from silviculture: Impacts on net carbon sequestration in forests. Forest Ecology and Management 236: 153-161. DOI: 10.1016/j.foreco.2006.08.343

Olsen E., Hossain M., Miller M., 1998. Statistical comparison of methods used in harvesting work studies. Oregon State University, Forest Research Laboratory, Corvallis, OR. Research Contribution no. 23, 31p.

Oprea I., 2008. Tehnologia exploatării lemnului [Timber harvesting technology]. Transilvania University Press, Braşov, 273 p.

Oprea I., Borz S.A., 2007. Organizarea şantierului de exploatare a lemnului [Organization of timber harvesting sites]. Transilvania University Press, Braşov, 133 p.

Picchio R., Maesano M., Savelli S., Marchi E., 2009. Productivity and energy balance in conversion of a Quercus cerris L. coppice stand into high forest in Central Italy. Croatian Journal of Forest Engineering 30 (1): 15-26.

Popovici R., 2013. Estimating chainsaw operating costs based on fuels, lubricants and spare parts. Bulletin of the Transilvania University of Braşov 6(55): 63-68.

Sabo A., Poršinsky T., 2005. Skidding of fir roundwood by Timberjack 240C from selective forests of Gorski Kotar. Croatian Journal of Forest Engineering 26 (1): 13-27.

Skoupy A., Klvac R., Hosseini S., 2010. Changes in the external speed characteristics of chainsaw engines with the use of mineral and vegetable oils. Croatian Journal of Forest Engineering 31(2): 149-155.

Stanovský M., Schürger J., Jankovský M., Messingerová V., Hnilica R., Kučera M., 2013. The effect of lubricating oil on temperature of chainsaw cutting system. Croatian Journal of Forest Engineering 34(1): 83-90.

Tunay M., Melemez K., 2008. Noise induced hearing loss of forest workers in Turkey. Pakistan Journal of Bilogical Sciences 11 (17): 2144-2148. DOI: 10.3923/pjbs.2008.2144.2148

Visser R., Spinelli R., 2012. Determining the shape of the productivity function for mechanized felling and felling-processing. Journal of Forest Research 17: 397-402. DOI: 10.1007/s10310-011-0313-2

Volpi R., 1992. Bilanci energetici in agricoltura (Energy balance in agriculture). Laruffa Editore, Reggio Calabria.

Vusić D., Šušnjar M., Marchi E., Spina R., Zečić Z., Picchio R., 2013. Skidding operations in thinning and shelterwood cut of mixed stands - Work productivity, energy inputs and emissions. Ecological Engineering 61: 216-223. DOI: 10.1016/j.ecoleng.2013.09.052

Zar J.H., 1974. Biostatistical analysis, Englewood Cliffs, USA, Prentice Hall Inc.

Wang J., Long C., McNeel J., Baumgras J., 2004. Productivity and cost of manual felling and cable skidding in Central Appalachian hardwood forests. Forest Products Journal 54 (12): 45-51.


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  • Gheorghe Ignea
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  • Gheorghe Ignea
  • Mohammad Reza Ghaffaryian
  • Stelian Alexandru Borz
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