The Experts below are selected from a list of 306 Experts worldwide ranked by ideXlab platform
Yves Bergeron - One of the best experts on this subject based on the ideXlab platform.
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using salvage logging and tolerance to risk to reduce the impact of forest fires on Timber Supply calculations
Canadian Journal of Forest Research, 2015Co-Authors: Alain Leduc, Pierre Y Bernier, Nicolas Mansuy, Frederic Raulier, Sylvie Gauthier, Yves BergeronAbstract:It is acknowledged that natural forest fires cannot and even should not be eliminated from the North American boreal forest. Forest fires produce immediate losses of wood volume, disrupt the conversion of the actual forest age structure into a target structure, and prevent planned Timber Supply (PTS) levels from being achieved. In this paper, we explore the extent to which periodic shortfalls in available Timber under various burn rates can be mitigated through salvage logging and the tolerance of forest managers to a given level of shortfall, both as a function of forest age class structure. Simulations are done using both a deterministic and a stochastic representation of burn rate over time. Results show that the frequency of shortfall events can be reduced by salvage logging and by the introduction of measures that generate a tolerance to shortfall and that this mitigation potential is influenced by initial forest age class structure and burn rate. Results also show that even a 100% rate of salvage lo...
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Emulating boreal forest disturbance dynamics: Can we maintain Timber Supply, aboriginal land use, and woodland caribou habitat?
Forestry Chronicle, 2013Co-Authors: Narayan Dhital, Frederic Raulier, Hugo Asselin, Louis Imbeau, Osvaldo Valeria, Yves BergeronAbstract:The effects on Timber Supply incurred by implementing an ecosystem-based management strategy were evaluated in an eastern Canadian boreal forest management unit. Standard linear programming was used to test the effects of four key policy issues: (1) aim for a targeted forest age structure inspired by natural fire regime and forest dynamics (multi-cohort approach), (2) agglomerate harvest blocks in operating areas to reproduce natural disturbance patterns at the landscape scale, (3) maintain cumulated clearcutting and natural disturbance rates inside the historical range of variability, and (4) exclude from harvest areas of potential interest to aboriginal people. The targeted forest age structure was achieved with a minimum reduction of periodic Timber Supply, but only after 50 years. Compared to a “business-as-usual” scenario, inclusion of the first three policy issues resulted in a 3% to 11% reduction in planned Timber Supply and a restoration period requiring that 43% to 67% of the productive area be e...
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Emulating boreal forest disturbance dynamics: Can we maintain Timber Supply, aboriginal land use, and woodland caribou habitat?
The Forestry Chronicle, 2013Co-Authors: Narayan Dhital, Frederic Raulier, Hugo Asselin, Louis Imbeau, Osvaldo Valeria, Yves BergeronAbstract:The effects on Timber Supply incurred by implementing an ecosystem-based management strategy were evaluated in an eastern Canadian boreal forest management unit. Standard linear programming was used to test the effects of four key policy issues: (1) aim for a targeted forest age structure inspired by natural fire regime and forest dynamics (multi-cohort approach), (2) agglomerate harvest blocks in operating areas to reproduce natural disturbance patterns at the landscape scale, (3) maintain cumulated clearcutting and natural disturbance rates inside the historical range of variability, and (4) exclude from harvest areas of potential interest to aboriginal people. The targeted forest age structure was achieved with a minimum reduction of periodic Timber Supply, but only after 50 years. Compared to a “business-as-usual” scenario, inclusion of the first three policy issues resulted in a 3% to 11% reduction in planned Timber Supply and a restoration period requiring that 43% to 67% of the productive area be excluded from clearcutting activities for the next 50 years. Such results require that partial cutting not be confined to operating areas eligible for clearcutting. Further exclusion of forest areas of potential interest to aboriginal people resulted in an additional 4% to 10% decrease in planned Timber Supply. Validation of the coarse filters used in this study (first three policy issues) was done using habitat requirements of woodland caribou (Rangifer tarandus caribou). Almost all scenarios induced a disturbance rate likely to allow a self-sustaining woodland caribou population within 25 years.
Frederick W Cubbage - One of the best experts on this subject based on the ideXlab platform.
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Subregional Timber Supply Projections with Chip-n-Saw Stumpage: Implications for Southern Stumpage Markets
Forest Science, 2019Co-Authors: Rajan Parajuli, Shaun M Tanger, Frederick W CubbageAbstract:Abstract Softwood chip-n-saw (CNS), an intermediate stumpage product between sawTimber and pulpwood, has become a mainstay in southern Timber markets in recent years. Most of the previous studies in southern Timber markets primarily focused on pulpwood and sawTimber markets, and often overlooked CNS as a standalone Timber product. Using the Subregional Timber Supply model, this study examines the dynamics of sawTimber- and pulpwood-dominated softwood stumpage markets with growing CNS markets in the US South. Results suggest that South-wide CNS inventory increases over the short run but begins to decrease by 2024, which leads to CNS prices rising over the years. The projected trends vary widely from one wood basket to another. This study provides additional nuance to future prospects of southern Timber markets.
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Projecting southern Timber Supply for multiple products by subregion
Forest Products Journal, 2009Co-Authors: Robert C. Abt, Frederick W Cubbage, Karen L. AbtAbstract:While Timber Supply modeling has been of importance in the wood-producing regions of the United States for decades, it is only more recently that the technology and data have allowed disaggregation of Supply and demand to substate regions, including product specific breakdowns and endogenous land use and plantation changes. Using southwide data and an economic Supply and demand framework, the Subregional Timber Supply model was used to project Timber inventory, removals, and price, for subregions of the 12 southern states through 2030. Two hypothetical demand scenarios were modeled to reflect current recessionary impacts and potential for added bio-energy demands: 1) constant demands based on average 2002 to 2007 removals, and 2) a 30-percent recession reduction (2006 to 2009) and rebound by the same percentage (2010 to 2013), followed by a 0.5 percent per year demand increase for all products. Projections indicate that pine pulpwood markets are the least volatile under both demand scenarios and small pine sawTimber are the most volatile. Larger pine sawTimber markets have moderate price decreases due to the recession, which later increase to levels near current prices. Hardwood pulpwood and sawTimber both experience recessionary price decreases, and while prices recover partially, they do not return to current levels by the end of the projection period. Also, more growth and less Timberland loss shifts more Timber production and harvests to the southern coastal plain areas.
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southern forest resource assessment using the subregional Timber Supply srts model
Forest Products Journal, 2000Co-Authors: Frederick W Cubbage, Gerardo PachecoAbstract:Most Timber Supply analyses are focused on broad regions. This paper describes a modeling system that uses a standard empirical framework applied to subregional inventory data in the South. Model results indicate significant within-region variation in Supply responses across owners and regions. Projections of southern Timber markets indicate that results are sensitive to: 1) estimates ofcurrent harvest; 2) conversion ofnatural stands to plantations; and 3) growth rates associated with plantations. Given projected increases in demand, intensive pine management could ameliorate real price increases. For hardwoods, uncertainty about the viability of intensive management or imports makes Supply response projections less conclusive.
William Mckillop - One of the best experts on this subject based on the ideXlab platform.
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Modelling Timber Supply: Resources and Management Regimes
Journal of Environmental Management, 1993Co-Authors: Amin U. Sarkar, William MckillopAbstract:Abstract Timber management in developing countries is seldom based on environmental, social or economic criteria. In many developing countries, not much is known of the Supply potential under either traditional centralized forest management, or under decentralized forest management which is currently being attempted as a way of promoting economic welfare. However, it is generally recognized that due to a range of problems, such as balance of payments deficits, importation of Timber and Timber products is not a realistic option for many developing countries in the foreseeable future. This, together with burgeoning domestic demand, makes it imperative to develop forest policies that increase domestic Timber output in an optimal way. The use of normative Supply modelling, based on sound environmental, social and economic principles, has been advocated as a means of analysing alternative forest policies and management strategies in developing countries where there is a shortage of data, and where policy alternatives involve major changes in economic and institutional structures such as market operation or patterns of forest ownership and administration. This paper focuses on the technological assumptions and data analysis that are necessary to develop a normative Timber Supply model, including designation of Timberland area, vegetation type, rotation lengths and output per acre for public and private lands where Timber production is practised.
Antti Asikainen - One of the best experts on this subject based on the ideXlab platform.
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Variation in forest landowners’ management preferences reduces Timber Supply from Finnish forests
Annals of Forest Science, 2020Co-Authors: Tero Heinonen, Timo Pukkala, Antti AsikainenAbstract:Key message Forest owners who maximize profitability with a low discount rate or whose management goals are related to conservation and recreation, rarely sell Timber. These owners make it difficult to achieve the high harvesting targets of the growing bioeconomy sector of Finland. To increase Timber Supply, these landowners should be informed about alternative silvicultural methods. Context The round wood harvests from Finnish forests are increasing and approaching to the level of maximum sustainable cut. Cutting budget calculations assume that forests are harvested in an optimal way for national Timber Supply. The calculations ignore the variability of landowners’ forest management preferences. Aims This study analyzed the effect of variation in the management objectives and silvicultural preferences of forest landowners on the forecasted Timber Supply from Finnish forests. Methods Forest owners were divided into savers (net present value maximized with a 1% discount rate), average owners (3% discount rate), and investors (5% discount rate). The owners of each group were further divided into three groups: those who allow only continuous cover management (12%), owners who use only rotation forest management (10%), and indifferent landowners who may use both silvicultural systems (78%). Scenarios were composed of management prescriptions that were optimized separately for the different groups of forest landowners. Results Compared to the even-flow Timber drain scenario for rotation forest management (calculated without acknowledging the varying preferences of landowners), the scenario where the owners’ preferences varied decreased harvested volume by 15–19% during a 100-year calculation period. The main reason for the difference was the saver type of landowners who rarely sell Timber. Conclusion It was concluded that variation of the preferences of forest landowners may make it challenging to meet the increasing harvesting targets of the growing bioeconomy of Finland.
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Variation in forest landowners’ management preferences reduces Timber Supply from Finnish forests
Annals of Forest Science, 2020Co-Authors: Tero Heinonen, Timo Pukkala, Antti AsikainenAbstract:Forest owners who maximize profitability with a low discount rate or whose management goals are related to conservation and recreation, rarely sell Timber. These owners make it difficult to achieve the high harvesting targets of the growing bioeconomy sector of Finland. To increase Timber Supply, these landowners should be informed about alternative silvicultural methods. The round wood harvests from Finnish forests are increasing and approaching to the level of maximum sustainable cut. Cutting budget calculations assume that forests are harvested in an optimal way for national Timber Supply. The calculations ignore the variability of landowners’ forest management preferences. This study analyzed the effect of variation in the management objectives and silvicultural preferences of forest landowners on the forecasted Timber Supply from Finnish forests. Forest owners were divided into savers (net present value maximized with a 1% discount rate), average owners (3% discount rate), and investors (5% discount rate). The owners of each group were further divided into three groups: those who allow only continuous cover management (12%), owners who use only rotation forest management (10%), and indifferent landowners who may use both silvicultural systems (78%). Scenarios were composed of management prescriptions that were optimized separately for the different groups of forest landowners. Compared to the even-flow Timber drain scenario for rotation forest management (calculated without acknowledging the varying preferences of landowners), the scenario where the owners’ preferences varied decreased harvested volume by 15–19% during a 100-year calculation period. The main reason for the difference was the saver type of landowners who rarely sell Timber. It was concluded that variation of the preferences of forest landowners may make it challenging to meet the increasing harvesting targets of the growing bioeconomy of Finland.
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Variation in forest landowners’ management preferences reduces Timber Supply from Finnish forests
Annals of Forest Science, 2020Co-Authors: Tero Heinonen, Timo Pukkala, Antti AsikainenAbstract:Context: The round wood harvests from Finnish forests are increasing and approaching to the level of maximum sustainable cut. Cutting budget calculations assume that forests are harvested in an optimal way for national Timber Supply. The calculations ignore the variability of landowners’ forest management preferences. Aims: This study analyzed the effect of variation in the management objectives and silvicultural preferences of forest landowners on the forecasted Timber Supply from Finnish forests. Methods: Forest owners were divided into savers (net present value maximized with a 1% discount rate), average owners (3% discount rate), and investors (5% discount rate). The owners of each group were further divided into three groups: those who allow only continuous cover management (12%), owners who use only rotation forest management (10%), and indifferent landowners who may use both silvicultural systems (78%). Scenarios were composed of management prescriptions that were optimized separately for the different groups of forest landowners. Results: Compared to the even-flow Timber drain scenario for rotation forest management (calculated without acknowledging the varying preferences of landowners), the scenario where the owners’ preferences varied decreased harvested volume by 15–19% during a 100-year calculation period. The main reason for the difference was the saver type of landowners who rarely sell Timber. Conclusion: It was concluded that variation of the preferences of forest landowners may make it challenging to meet the increasing harvesting targets of the growing bioeconomy of Finland.
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effects of forest management and harvesting intensity on the Timber Supply from finnish forests in a changing climate
Canadian Journal of Forest Research, 2018Co-Authors: Tero Heinonen, Timo Pukkala, Antti Asikainen, Seppo Kellomaki, Harri Strandman, Ari Venalainen, Heli PeltolaAbstract:We studied the potential effects of management and harvesting intensity on the Timber Supply from Finnish forests in a changing climate and, consequently, the possibilities of meeting the increasin...
Christina Kluge - One of the best experts on this subject based on the ideXlab platform.
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The Long Term Adequacy Of World Timber Supply
2016Co-Authors: Christina KlugeAbstract:the long term adequacy of world Timber Supply is available in our book collection an online access to it is set as public so you can get it instantly. Our digital library hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Merely said, the the long term adequacy of world Timber Supply is universally compatible with any devices to read.
