Communicating the Role of Silviculture in Managing the National Forests PDF Download
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Author:
Publisher:
ISBN:
Category : Communication in forestry
Languages : en
Pages : 216
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Author:
Publisher:
ISBN:
Category : Communication in forestry
Languages : en
Pages : 216
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Author: Richard A. Birdsey
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 394
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Author:
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 496
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Author: Charles J. Gatchell
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Category : Lumber
Languages : en
Pages : 564
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Author:
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 40
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Author:
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ISBN:
Category :
Languages : en
Pages : 598
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Author:
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ISBN:
Category :
Languages : en
Pages : 384
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Author: James D. Haywood
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 634
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Author:
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 128
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This report describes the origin, design, establishment and measurement procedures and first results of a large long-term cooperative study comparing a number of widely different silvicultural regimes applied to young-growth Douglas-fir (Pseudotsuga menziesii) stands managed for multiple objectives. Regimes consist of (1) conventional clearcutting followed by intermediate thinning; (2) retention of reserve trees to create a two-aged stand; (3) small patch cuts dispersed within a thinned matrix, repeated at approximately 15-year intervals to create a mosaic of age classes; (4) group selection within a thinned matrix on an approximate 15-year cycle; (5) continued thinning on an extended rotation; and (6) an untreated control. Each of these regimes is on operationsize units (about 30 to 70 acres each). Output variables to be evaluated include conventional timber growth and yield statistics, harvest costs, sale layout and administration costs, aesthetic effects and public acceptance, soil disturbance, bird populations, and economic aspects. Descriptive statistics and some initial results are presented for the first replicate, established in 1997-98.
Author: Pacific Northwest Research Station (Portland, Or.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 116
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