Productivity and Cost of Integrated Harvesting of Wood Chips and Sawlogs in Stand Conversion Operations
Joint Authors
Source
International Journal of Forestry Research
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-22
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
This study evaluated the operational performance and cost of an integrated harvesting system that harvested sawlogs and biomass (i.e., energy wood chips) in stand conversion clearcut operations.
Douglas-fir (Pseudotsuga menziesii) trees were processed into sawlogs while whole trees of tanoak (Lithocarpus densiflorus), and sub-merchantable materials (small-diameter trees, tops and limbs) were fed directly into a chipper to produce biomass for energy production.
A standard time study method was used to determine productivity and costs.
Over 26 working days, the integrated system produced 1,316 bone-dry metric tonnes (BDTs) of sawlogs, and 5,415.89 BDT of chips, with an average moisture content of 43.2%.
Using the joint products allocation costing method, the costs of the integrated system were $29.87/BDT for biomass and $4.26/BDT for sawlogs.
Chipping utilization was as low as 41%, directly affecting production and cost of chipping operation.
Single-lane, dirt, spur roads were the most costly road type to transport whole trees to a centralized processing site: transportation costs for biomass and sawlogs were increased by $0.08/BDT and $0.02/BDT, respectively, for every 50 meter increase in traveling distance.
Diesel fuel price could raise total system cost for each product by $0.78/BDT and $0.08/BDT for each $0.10/liter increase.
American Psychological Association (APA)
Harrill, Hunter& Han, Han-Sup. 2012. Productivity and Cost of Integrated Harvesting of Wood Chips and Sawlogs in Stand Conversion Operations. International Journal of Forestry Research،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-505981
Modern Language Association (MLA)
Harrill, Hunter& Han, Han-Sup. Productivity and Cost of Integrated Harvesting of Wood Chips and Sawlogs in Stand Conversion Operations. International Journal of Forestry Research No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-505981
American Medical Association (AMA)
Harrill, Hunter& Han, Han-Sup. Productivity and Cost of Integrated Harvesting of Wood Chips and Sawlogs in Stand Conversion Operations. International Journal of Forestry Research. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-505981
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-505981