scholarly journals Development of a Methodology to Analyze Energy and Resources Consumption Along the Product Value Chain

Procedia CIRP ◽  
2015 ◽  
Vol 33 ◽  
pp. 145-150 ◽  
Author(s):  
Andrea Luzi ◽  
Eugenia Marilungo ◽  
Michele Germani
Keyword(s):  
Value Chain ◽  
Product Value

Effects of precommercial thinning on the forest value chain in northwestern New Brunswick: Part 4 – Lumber production, quality and value

2013 ◽  
Vol 89 (04) ◽  
pp. 474-489 ◽  
Author(s):  
Isabelle Duchesne ◽  
Doug G. Pitt ◽  
Francis Tanguay
Keyword(s):  
Value Chain ◽  
Positive Impact ◽  
Abies Balsamea ◽  
Basic Density ◽  
Production Quality ◽  
Balsam Fir ◽  
Appreciable Effect ◽  
Precommercial Thinning ◽  
Product Value ◽  
Negative Effect

Forty-eight years after application, three nominal precommercial thinning (PCT) spacings of 4 ft (1.2 m), 6 ft (1.8 m) and 8 ft (2.4 m) were compared to an unthinned control in six replicate, balsam fir (Abies balsamea [L.] Mill.)-dominated stands. Within three of these replicates chosen for clearcut harvest in 2008, a total of 150 trees were bucked into 479 sawlogs that produced 10 829 board feet of lumber. PCT had a positive impact on Premium lumber grade recovery per tree, increasing it from an average of 9 foot board measure (fbm) in the unthinned control plots, to 22 fbm in plots nominally spaced to 8 ft (p = 0.02). No. 2 & Better grade yields increased from 42 to 76 fbm/tree in these same sets of plots (p < 0.01). PCT to 6 ft and 8 ft increased the production of 2×4 and 2×6 lumber over the control (p ≤ 0.04). Stand-level gross total product value increased between 11% and 23% in thinned stands (estimated at +$3000 to +$6600 per ha, p < 0.01). PCT had no appreciable effect on sawn lumber wood density (p ≥ 0.26) or lumber stiffness (MOE; ≤-6.2%, p ≥ 0.11), but had a negative effect on lumber strength (MOR; ≤ -13.4%, p ≤ 0.03) and wood basic density at stump height (≤- 7%; p < 0.01). MDF panel properties were generally good, regardless of spacing. We recommend thinning young balsam fir stands to a maximum nominal spacing of 6 ft (1.2 m) to maintain satisfactory lumber mechanical properties and maximize product value per hectare.

scholarly journals Participative Innovation Platforms (PIP) for Upgrading NTFP Value Chains in East Africa

2020 ◽  
Vol 19 (4) ◽  
pp. 419-438
Author(s):  
Eckhard Auch ◽  
Jürgen Pretzsch
Keyword(s):  
Value Chain ◽  
Gum Arabic ◽  
Forest Product ◽  
Government Support ◽  
Value Chains ◽  
Learning Approach ◽  
Product Value ◽  
Innovation Platform ◽  
Poor Infrastructure

Abstract Improving forest product value chains is considered a means to solve forest-related challenges in the Global South. The ‘Participative Innovation Platform’ (PIP) instrument has been developed to design and to continually adapt solutions and strategies for effective cooperation amongst value chain actors. The instrument is rooted in the action-oriented and social learning approach, combined with the concept of innovation systems. This paper presents findings from three PIPs conducted for upgrading non-timber forest product value chains in Ethiopia (bamboo, natural gums) and Sudan (gum Arabic). A comparative analysis of highest ranked contents revealed similarities in the challenges: lack of government support, poor infrastructure, producers’ lack of knowledge and skills, and lack of market information. Priority upgrading measures focused on producers’ knowledge, skills, and capacity to engage in collective action and to lobby interests, and on capital resources to invest in processing technology. It is concluded that although the PIP instrument presents an innovative way to upgrade forest-based value chains, the instrument requires a long-term process with frequently held platform meetings, conducted by neutral institutions with skilled moderators. Crucial in this process is the need to consistently verify and ensure that all actor groups of the chain are represented, and are confident they will derive benefits from the value chain upgrading.

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