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Performance, Capability and Costs of Motor-Manual Tree Felling in Hyrcanian Hardwood Forest

Meghdad Jourgholami   ORCID icon orcid.org/0000-0003-3676-278X ; Department of Forestry and Forest Economics Natural Resources Faculty University of Tehran P.O. Box: 31585 – 4314, Karaj IRAN
Baris Majnounian ; Department of Forestry and Forest Economics Natural Resources Faculty University of Tehran P.O. Box: 31585 – 4314, Karaj IRAN
Nosratollah Zargham ; Department of Forestry and Forest Economics Natural Resources Faculty University of Tehran P.O. Box: 31585 – 4314, Karaj IRAN

Puni tekst: engleski, pdf (4 MB) str. 283-293 preuzimanja: 710* citiraj
APA 6th Edition
Jourgholami, M., Majnounian, B. i 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. Preuzeto s https://hrcak.srce.hr/116784
MLA 8th Edition
Jourgholami, Meghdad, et al. "Performance, Capability and Costs of Motor-Manual Tree Felling in Hyrcanian Hardwood Forest." Croatian Journal of Forest Engineering, vol. 34, br. 2, 2013, str. 283-293. https://hrcak.srce.hr/116784. Citirano 17.09.2021.
Chicago 17th Edition
Jourgholami, Meghdad, Baris Majnounian i Nosratollah Zargham. "Performance, Capability and Costs of Motor-Manual Tree Felling in Hyrcanian Hardwood Forest." Croatian Journal of Forest Engineering 34, br. 2 (2013): 283-293. https://hrcak.srce.hr/116784
Harvard
Jourgholami, M., Majnounian, B., i Zargham, N. (2013). 'Performance, Capability and Costs of Motor-Manual Tree Felling in Hyrcanian Hardwood Forest', Croatian Journal of Forest Engineering, 34(2), str. 283-293. Preuzeto s: https://hrcak.srce.hr/116784 (Datum pristupa: 17.09.2021.)
Vancouver
Jourgholami M, Majnounian B, Zargham N. Performance, Capability and Costs of Motor-Manual Tree Felling in Hyrcanian Hardwood Forest. Croatian Journal of Forest Engineering [Internet]. 2013 [pristupljeno 17.09.2021.];34(2):283-293. Dostupno na: https://hrcak.srce.hr/116784
IEEE
M. Jourgholami, B. Majnounian i N. Zargham, "Performance, Capability and Costs of Motor-Manual Tree Felling in Hyrcanian Hardwood Forest", Croatian Journal of Forest Engineering, vol.34, br. 2, str. 283-293, 2013. [Online]. Dostupno na: https://hrcak.srce.hr/116784. [Citirano: 17.09.2021.]

Sažetak
Motor-manual tree felling is the most labor-intensive component of all harvesting operations and frequently represents a bottleneck in wood production. The study of motor-manual tree felling was carried out in two compartments in the Namkhaneh district of Kheyrud Forest. The objects of this study were as follows: time study of tree felling operations, estimate of chainsaw productivity and costs, development of a regression model in uneven-aged stand using single-tree selection methods. The factors affecting total felling time regression model (increasing order of importance) were DBH of harvested trees, direction of felling regarding the lay and inter-tree distance. The hourly production of chainsaw felling with and without delay time was 56.4 cubic meters per hour (13 tree/hour) and 80.7 cubic meters per hour (19 tree/hour), respectively. Productivity of chainsaw felling increased in relation to tree DBH as power relation. The cost of chainsaw felling with and without delay time was 0.55 and
0.39 USD/m3, respectively. The cost of felling increased as simple exponential equation when DBH of harvested trees decreased. However, the unit felling cost for chainsaw operation decreased as the tree size increased. Total felling cycle time without delay averaged 3.14 minutes and with delay time it averaged 4.5 minutes. Productivity was more sensitive to DBH than felling direction and inter-tree distance.

Ključne riječi
tree felling; time study; regression model; production; cost

Hrčak ID: 116784

URI
https://hrcak.srce.hr/116784

Posjeta: 958 *