Naslov
Long-term Cost Analysis of Mid-performance Harvesters in Czech Conditions

Autori
Dvořák, Jiří ; Chytrý, Martin ; Natov, Pavel ; Jankovský, Martin ; Beljan, Karlo

Izvornik
Austrian Journal of Forest Science (0379-5292) 136 (2019), 4; 351-372

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
operational costs, productivity, thinning, operational time, efficiency

Sažetak
The harvester technology is increasingly used in Central and Eastern Europe, yet is still costly and thus has be used efficiently. This study focused on the analysis of the development of operational costs of two mid-performance harvesters (JD770D and JD1070D) over a ten- year period, from 2006 to 2017. The costs were aggregated into four categories: depreciation, services, material, and personnel costs) and were analy- sed annually. The Harvesters were used in thinning under different conditions, which has to be considered when interpreting our results. The mean stem size processed by the JD770D was 0.11 m3 under bark (u.b.) and it harvested 16, 793 m3 u.b. per year of timber operating for 3, 166 machine hours (MH) per year. The mean costs per m3 u.b. of produced timber ranged from 6.6 to 10.2 €/m3 u.b. The JD1070D was harvesting trees with a mean stem size of 0.29 m3 u.b. and it harvested 26, 837 m3 u.b. per year on average, with an operational time of 3, 067 MH. The mean costs per m3 u.b. of produced timber ranged from 5.4 to 6.9 €/m3 u.b. Personnel costs were important in driving costs and their share on the total operational costs was 40 % for JD770D and 31 % for JD1070D. Material costs were also comparably high with 23 and 28 % of the total ope- rational costs of JD770D and JD1070D, respectively. Depreciation accounted for 18 % and 23 % for the two studied harvesters. The temporal utilization of the harvesters ranged from 63 to 96 %, with higher values for the JD770D. With increasing number of operators, the utilization rate decreased. Given the importance of personnel costs in the studied harvester further analyses should focus on optimizing this decisive driver of costs in mid-performance harvesters in Central Europe

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo

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