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An analysis of potential improvements within Lithuanian sawlog supply

Puodžiūnas, Mindaugas (2013). An analysis of potential improvements within Lithuanian sawlog supply. Diss. (sammanfattning/summary) Umeå : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2013:87
ISBN 978-91-576-7912-3
eISBN 978-91-576-7913-0
[Doctoral thesis]

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The wood supply from the forest to the industry is often characterized by high variability caused by the divergent structure of forest products, seasonality and uneven geographical distribution of forest resources and forest products industries. Based on previous knowledge on wood supply this thesis aimed to identify existing wood supply patterns and strategies in the Lithuanian state forest sector, to evaluate supply chain performance for sawmills and to examine potential improvements for roundwood transportation as well as handling operations at the sawmill. The research presented in this thesis was based on data gathered in the timeframe of 2000-2008.
The studies demonstrated how state forest enterprises in wood supply and sawmilling activities focused on so called main products, as compared to by-products (I, II). This was reflected by the lead times which for high value assortments were 2.5 times shorter compared to low value assortments (I). This was also reflected in the degree of dynamics between upstream and downstream positions at the sawmills, which for by-products were 40 % lower than for main products (II). Although the study showed some signs of coordination between wood supply and market sales, the wood supply from state forest enterprises were still primarily driven by silvicultural requirements and not by market signals (I, II).
Roundwood transportation planning was carried out independently by each state forest enterprise. The results (III) demonstrated that, given the existing geographical distribution of forest resources and customers, improved transport planning can potentially reduce roundwood ttransport costs. It was found that up to 60 % of volume for studied period could be included in a backhaul route thus resulting in an average potential reduction of transport costs by 14 % (III).
Discrete-event simulation model was applied for analysing roundwood handling operations at a sawmill (IV). The model proved to be an effective tool for simulating different roundwood handling operations and could be used as a supportive management tool. It enabled the identification of key factors – roundwood sourcing and delivery scheduling - that could improve capacity utilization both for the sawmill and roundwood hauling.

Authors/Creators:Puodžiūnas, Mindaugas
Title:An analysis of potential improvements within Lithuanian sawlog supply
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :November 2013
Number of Pages:48
I.Mindaugas Puodžiūnas and Dag Fjeld, 2002. Evaluation of supply chain strategies in Lithuanian forest enterprises: a case study. Baltic Forestry, 8(2): 64-70
II.Mindaugas Puodžiūnas, Dag Fjeld and Iwan Wästerlund, 2003. Evaluation of supply chain performance metrics for Lithuanian state sawmills. Baltic Forestry, 9(2): 20-28
III.Mindaugas Puodžiūnas, Mikael Rönnqvist and Dag Fjeld, 2004. The potential for improvement of tactical planning of roundwood transport in Lithuanian state forest enterprises. Baltic Forestry, 10(1): 79-88
IV.Mindaugas Puodžiūnas and Dag Fjeld, 2008. Roundwood handling at a Lithuanian sawmill - discrete-event simulation of sourcing and delivery scheduling. Baltic Forestry, 14(2): 163-175
Place of Publication:Umeå
Publisher:Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-7912-3
ISBN for electronic version:978-91-576-7913-0
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:J Handling, transport, storage and protection of agricultural products > J12 Handling, transport, storage and protection of forest products
K Forestry > K10 Forestry production
K Forestry > K50 Processing of forest products
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Agrovoc terms:sawlogs, supply, sawmills, wood industry, optimization methods, transport, simulation models, lithuania
Keywords:supply chain, strategy, lead-time, transport planning, backhaul, sourcing, scheduling, simulation
Permanent URL:
ID Code:10878
Faculty:S - Faculty of Forest Sciences
Department:(S) > Department of Forest Biomaterials and Technology (until 131204)
External funders:Royal Swedish Academy of Agriculture and Forestry
Deposited By: Dr Johanna Wallsten
Deposited On:04 Nov 2013 13:59
Metadata Last Modified:05 May 2015 07:36

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