Author: Dieter Hans-Friedrich Schöne
Publisher:
ISBN:
Category : Forest site quality
Languages : en
Pages : 488
Book Description
Existing forest site maps have been described as "invaluable tools" in forest management. Their, economic value potentially materializes as the summed advantage from better decisions in all phases of forestry. Via Bayesian decision analysis, this study establishes optimal use and economic value of site information for one facet of management only: The choice of an optimal planting density in Douglas-fir reforestation. Two case studies were undertaken in extremely different environments of Southwestern and Northwestern Oregon. The prior analysis is based on a review of existing ref3restation records and a simulation model. Optimal prior acts differ substantially from present policies. Their implementation may reduce expected costs by approximately $50 per acre. Based on ecological variables observed an 350 survival plots, prediction aids for first-year survival arid site class, the main sources of uncertainty, are established. Plant water relations, and particularly the available water capacity of soils, emerge as prime determinants of survival and productivity. During preposterior analysis, Bayes' strategy translates ecological knowledge directly into optimal managerial choices for specific site units. Site information is evaluated economically, based on prospective reduction of reforestation costs. Expected values of site information are relatively low and almost identical in both ownerships. In the Northwestern Oregon study, it is a rather uniform environment for reforestation which limits the value of information. In the very diverse environment of the Southwestern Oregon ownership, lower marginal costs for plantation establishment, and smaller opportunity losses set these limits. A larger potential value of site information is likely for activities with high marginal costs in Southwestern Oregon. Bayesian decision analysis emphasizes the duality of ecology and economics in forest management. Combined with a system of collecting and analyzing operational records, it resembles a traditional forestry approach to uncertainty: Biolley's control method. As an extended, economically, statistically and computationally refined equivalent of the control method, Bayesian decision analysis deserves a place in the theory of forestry and in practical management of our forests.
The Valuation and Use of Site Information for Douglas-fir Reforestation in Western Oregon
Author: Dieter Hans-Friedrich Schöne
Publisher:
ISBN:
Category : Forest site quality
Languages : en
Pages : 488
Book Description
Existing forest site maps have been described as "invaluable tools" in forest management. Their, economic value potentially materializes as the summed advantage from better decisions in all phases of forestry. Via Bayesian decision analysis, this study establishes optimal use and economic value of site information for one facet of management only: The choice of an optimal planting density in Douglas-fir reforestation. Two case studies were undertaken in extremely different environments of Southwestern and Northwestern Oregon. The prior analysis is based on a review of existing ref3restation records and a simulation model. Optimal prior acts differ substantially from present policies. Their implementation may reduce expected costs by approximately $50 per acre. Based on ecological variables observed an 350 survival plots, prediction aids for first-year survival arid site class, the main sources of uncertainty, are established. Plant water relations, and particularly the available water capacity of soils, emerge as prime determinants of survival and productivity. During preposterior analysis, Bayes' strategy translates ecological knowledge directly into optimal managerial choices for specific site units. Site information is evaluated economically, based on prospective reduction of reforestation costs. Expected values of site information are relatively low and almost identical in both ownerships. In the Northwestern Oregon study, it is a rather uniform environment for reforestation which limits the value of information. In the very diverse environment of the Southwestern Oregon ownership, lower marginal costs for plantation establishment, and smaller opportunity losses set these limits. A larger potential value of site information is likely for activities with high marginal costs in Southwestern Oregon. Bayesian decision analysis emphasizes the duality of ecology and economics in forest management. Combined with a system of collecting and analyzing operational records, it resembles a traditional forestry approach to uncertainty: Biolley's control method. As an extended, economically, statistically and computationally refined equivalent of the control method, Bayesian decision analysis deserves a place in the theory of forestry and in practical management of our forests.
Publisher:
ISBN:
Category : Forest site quality
Languages : en
Pages : 488
Book Description
Existing forest site maps have been described as "invaluable tools" in forest management. Their, economic value potentially materializes as the summed advantage from better decisions in all phases of forestry. Via Bayesian decision analysis, this study establishes optimal use and economic value of site information for one facet of management only: The choice of an optimal planting density in Douglas-fir reforestation. Two case studies were undertaken in extremely different environments of Southwestern and Northwestern Oregon. The prior analysis is based on a review of existing ref3restation records and a simulation model. Optimal prior acts differ substantially from present policies. Their implementation may reduce expected costs by approximately $50 per acre. Based on ecological variables observed an 350 survival plots, prediction aids for first-year survival arid site class, the main sources of uncertainty, are established. Plant water relations, and particularly the available water capacity of soils, emerge as prime determinants of survival and productivity. During preposterior analysis, Bayes' strategy translates ecological knowledge directly into optimal managerial choices for specific site units. Site information is evaluated economically, based on prospective reduction of reforestation costs. Expected values of site information are relatively low and almost identical in both ownerships. In the Northwestern Oregon study, it is a rather uniform environment for reforestation which limits the value of information. In the very diverse environment of the Southwestern Oregon ownership, lower marginal costs for plantation establishment, and smaller opportunity losses set these limits. A larger potential value of site information is likely for activities with high marginal costs in Southwestern Oregon. Bayesian decision analysis emphasizes the duality of ecology and economics in forest management. Combined with a system of collecting and analyzing operational records, it resembles a traditional forestry approach to uncertainty: Biolley's control method. As an extended, economically, statistically and computationally refined equivalent of the control method, Bayesian decision analysis deserves a place in the theory of forestry and in practical management of our forests.
Economic Guides for Douglas-fir Reforestation in Southwestern Oregon
Author: Dennis E. Teeguarden
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 36
Book Description
Planters' Notes
Author:
Publisher:
ISBN:
Category : Tree planting
Languages : en
Pages : 428
Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Publisher:
ISBN:
Category : Tree planting
Languages : en
Pages : 428
Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Results of Shelterwood Harvesting of Douglas-fir in the Cascades of Western Oregon
Author: Richard L. Williamson
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 20
Book Description
Tree Planters' Notes
Author:
Publisher:
ISBN:
Category : Tree planting
Languages : en
Pages : 588
Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Publisher:
ISBN:
Category : Tree planting
Languages : en
Pages : 588
Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Economic Guides for Douglas-fir Reforestation in Western Oregon
Author: Dennis E. Teeguarden
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 118
Book Description
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 118
Book Description
Reforestation Efforts in Western Oregon
Author: United States. Congress. House. Committee on Agriculture. Subcommittee on Forests
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 264
Book Description
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 264
Book Description
The Role of the Genus Ceanothus in Western Forest Ecosystems
Instructions for Planting Douglas Fir on Logged-off Lands of Western Oregon and Washington
Author: Thornton Taft Munger
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 20
Book Description