scholarly journals Knowledge and technologies for effective wood procurement

2021 ◽  
pp. 1-2
Author(s):  
Rasmus Astrup
Keyword(s):  
Wood Procurement

Yard-to-Mill Woodflow Scheduling by Microcomputer

1983 ◽  
Vol 7 (1) ◽  
pp. 50-53
Author(s):  
R. H. Hokans ◽  
W. B. Stuart
Keyword(s):  
Computer Program ◽  
Effective Means ◽  
Cost Effective ◽  
Scheduling Problem ◽  
Wood Procurement

Abstract Scheduling yard-to-mill woodflows requires the regular attention of wood procurement managers. While the calculations are routine, they are sufficiently time consuming to preclude evaluation of more than a first-guess schedule. A computer program implemented on a microcomputer provides a cost-effective means of doing the calculations and choosing an operationally feasible least-cost solution to the scheduling problem.

scholarly journals Effects of Spatial Boreal Forest Harvesting Practices on Efficiency through a Benchmarking Approach in Eastern Canada

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1108
Author(s):  
Daniela Mazo ◽  
Osvaldo Valeria
Keyword(s):  
Spatial Organization ◽  
Forest Harvesting ◽  
Scale Efficiency ◽  
Data Envelopment ◽  
Road Density ◽  
Eastern Canada ◽  
Management Objectives ◽  
Multiple Variable ◽  
Wood Procurement ◽  
Operational Aspects

In eastern Canada, harvesting practices and spatial organization of harvested sites are modulated according to ecosystem forest management objectives. We determined how spatial organization affects efficiency by evaluating wood procurement costs. A comparative analysis of efficiency was presented using a non-parametric technique, i.e., data envelopment analysis (DEA), which allows multiple variable analyses of different factors. A database of 50 harvested sites during the period 2015–2018, located along a north-south latitudinal gradient between 46° to 50°, was constructed with variables describing spatial organization (roads and dispersion of patches) and operational aspects (wood procurement costs). The evaluated financial efficiencies show high values greater than 70%. The causes of inefficiency were dispersion of the patches, distance to the mill, and the number of kilometers of built roads. When efficiency values were arranged by latitudinal location, northern sites exhibited a lower value of overall and scale efficiency due to the high values in the wood harvested, and developed road density of the zone.

scholarly journals A Framework for Tracking the State of the Forest Industry: Case Study of Georgia

2009 ◽  
Vol 33 (4) ◽  
pp. 157-163
Author(s):  
Tim Sydor ◽  
Brooks Mendell ◽  
Jacek Siry ◽  
Rafael De La Torre ◽  
Tom Harris ◽  
...  
Keyword(s):  
Oriented Strand Board ◽  
Local Level ◽  
The State ◽  
Forest Industry ◽  
Efficient Manner ◽  
Forest Inventories ◽  
Size Type ◽  
Wood Demand ◽  
Wood Procurement ◽  
Timber Markets

Abstract This research introduces a framework for tracking the state of the forest industry and relative competitiveness at the local level and applies it to the state of Georgia. Key insights highlight how localized forestry and forest industry profiles indicate where wood demand and suppliesare in and out of balance on an annual basis. Alternately, localized profiles that emphasize physiographic regions may not correspond well with traditional wood procurement areas. More importantly, ongoing tracking of wood supply viability and competitive analysis must distinguish between timber markets (stumpage, forest inventories and removals, and growth) and end product commodity markets (lumber, pulp, oriented strand board, and plywood). Mills, like forests, are not uniformly distributed throughout a state, whether measured by size, type, or end product. Tracking the forest industry in a localized, annual manner can support ongoing planning, investment, and policymaking activities in a targeted and efficient manner.

scholarly journals Using wood on King Island, Alaska

2013 ◽  
Vol 36 (1) ◽  
pp. 89-112 ◽  
Author(s):  
Claire Alix
Keyword(s):  
Literature Review ◽  
19Th Century ◽  
Building Material ◽  
Bering Strait ◽  
Island Community ◽  
Last 300 Years ◽  
Seward Peninsula ◽  
Wood Procurement ◽  
The 19Th Century ◽  
The Village

Abstract Ugiuvak, or King Island, off the coast of the Seward Peninsula in the Bering Strait, is among the few Arctic villages with stilt houses in an environment where wood is essentially lacking. In 1899, Edward W. Nelson, describing the island’s architecture, noted that wood was abundant. Today, the contrast is striking between the bareness and steepness of the coast and the extensive use of wood in the village. This article presents information about wood procurement and use as building material on Ugiuvak in the last 300 years based on literature review, on-site observations, and discussions with members of the King Island community. It briefly reviews the origin, circulation, and deposition of driftwood in the Bering Strait region. It then explores the possibility of a relationship in the 19th century between an increase in driftwood availability and the development of stilt architecture on the island, taking into account other wood sources that became available at the time. The last 150 years of occupation of the village were marked by a transition from a solely driftwood-based economy to one where driftwood was first supplemented and then largely replaced by lumber.

The Chaco Wood Project: The Chronometric Reappraisal of Pueblo Bonito

1996 ◽  
Vol 61 (2) ◽  
pp. 295-310 ◽  
Author(s):  
Thomas C. Windes ◽  
Dabney Ford
Keyword(s):  
New Mexico ◽  
Tree Ring ◽  
San Juan ◽  
San Juan Basin ◽  
Cultural Behavior ◽  
Complex Picture ◽  
Wood Procurement ◽  
Construction Periods

The inventory and analysis of 4,294 pieces of wood remaining in Pueblo Bonito are described. This site, long a keystone for interpreting the Chacoan Phenomenon in the San Juan Basin of northwestern New Mexico, reveals a fascinating history in the procurement, use, and reuse of wood through time. The long use of the site portrays a complex picture of wood procurement for construction from the A.D. 800s through the early A.D. 1100s, and its reuse in both prehistoric and historic times. Major construction periods are tree-ring dated to the mid-A.D. 800s, between A.D. 1047 and 1049, and between A.D. 1077 and 1082. Many of the construction events appear causally related to decade-long wet periods, when food surplus could accumulate. The use of wood at Pueblo Bonito mirrors a larger system of cultural behavior important for our interpretation of the development and demise of the Chacoan system.

scholarly journals Characteristics of transborder wood flow to sawmills in eastern Canada

2009 ◽  
Vol 85 (1) ◽  
pp. 110-119
Author(s):  
Nate Anderson ◽  
René Germain ◽  
Eddie Bevilacqua
Keyword(s):  
United States ◽  
Coniferous Forest ◽  
Mail Survey ◽  
The United States ◽  
Eastern Canada ◽  
Northern Forest ◽  
Fuel Prices ◽  
Wood Procurement ◽  
Crown Lands

This paper characterizes the wood procurement operations of Canadian sawmills within 300 kilometres of the Northern Forest, which is a 12 million hectare area of mixed hardwood and coniferous forest that spans 4 states in the northeastern United States. Based on data collected from a mail survey administered in 2006, wood procurement is quantified in terms of the percentage of supply from transborder sources, the geographic range of procurement operations, the relative importance of alternative sawlog sources, and perceived changes in the availability and quality of the sawlog resource. Over 1/3 of the 5.17 million m3 of procurement reported in the survey originated in the United States. On average, mills that have little or no procurement in Canada routinely range 240 kilometres or more to meet procurement requirements, predominantly from roadside sources in the United States. Mills that procure all of their wood within Canada range 114 kilometres on average, and procure 73% of their wood supply from provincial Crown lands. A majority of mills in the sample reported that the quality of logs and the volume per log within their woodshed declined between 1994 and 2005. Based on a logistic regression model of 4 predictor variables, distance to the U.S. border and access to logs from provincial Crown lands are significant predictors of the use of transborder log sources. In addition to providing valuable baseline data, results suggest that mills without access to provincial Crown lands may be disproportionately impacted by high fuel prices and parcelization of private forest land in the United States. Results are discussed in light of these and other industry trends. Key words: sawmill industry, log imports, international trade, wood procurement

scholarly journals Validating the predicted saw log and pulpwood proportions and gross value of Scots pine and Norway spruce harvest at stand level by Most Similar Neighbour analyses and a stem quality database

Silva Fennica ◽  
2018 ◽  
Vol 52 (4) ◽  
Author(s):  
Jukka Malinen ◽  
Harri Kilpeläinen ◽  
Erkki Verkasalo
Keyword(s):  
Norway Spruce ◽  
Scots Pine ◽  
External Quality ◽  
Log Reduction ◽  
Unit Value ◽  
Stem Quality ◽  
Spruce Stands ◽  
Average Unit ◽  
Wood Procurement ◽  
Tree Quality

Detailed pre-harvest information about the volumes and properties of growing stocks is needed for increased precision in wood procurement planning for just-in-time wood deliveries by cut-to-length (CTL) harvesters. In the study, the non-parametric Most Similar Neighbour (MSN) methodology was evaluated for predicting external quality of Scots pine and Norway spruce, expressed as stem sections fulfilling the saw log dimension and quality requirements of Finnish forest industry, as they affect the recovery of timber assortments and the value of a pre-harvest stand. Effects of external tree quality were evaluated using saw log recovery and saw log reduction caused by stem defects, as well as total timber value (€) and average unit value (€ m) in a stand. Root mean square error (RMSE) of saw log recovery and reduction were 9.12 percentile points (pp) for Scots pine and 6.38 pp for Norway spruce stands. In the unit value considerations, the predictions compared with measurements resulted in the RMSE of 3.50 € m and the bias of 0.58 € m in Scots pine stands and 2.60 € m, and 0.35 € m in Norway spruce stands, respectively. The presented MSN based approach together with the utilization of the external stem quality database included in the ARVO software could provide dimension and external quality predictions usable for pre-harvest assessment of timber stock at a stand level. This prediction methodology is usable especially in analyses where timber assortment recoveries, values and unit prices are compared when different bucking objectives are used.–3–3–3–3–3

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