Influence of Stand Density on Stem Quality in Pole-size Northern Hardwoods PDF Download
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Author: Richard M. Godman
Publisher:
ISBN:
Category : Forest thinning
Languages : en
Pages : 12
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Author: Richard M. Godman
Publisher:
ISBN:
Category : Forest thinning
Languages : en
Pages : 12
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Author: David L. Sonderman
Publisher:
ISBN:
Category : Forest thinning
Languages : en
Pages : 12
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Book Description
S2Describes changes in limb-related defects on 18-year-old, even-aged hardwoods 6 years after thinning. Stocking levels of 30, 45, and 60 percent were studied. There were fewer defects per square foot of surface area in the higher stocking plots than in the lower stocking plots. The average number of live limbs decreased by 83 percent in the unthinned plots and increased slightly in the heavily thinned plots. The results show that the frequency and size of limb-related defects are affected by stand density over a short period of time.S3.
Author: David A. Marquis
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 112
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 268
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 444
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Book Description
Author: Deborah C. Hayes
Publisher: Springer
ISBN: 1461418186
Category : Science
Languages : en
Pages : 666
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Book Description
USDA Forest Service Experimental Forests and Ranges (EFRs) are scientific treasures, providing secure, protected research sites where complex and diverse ecological processes are studied over the long term. This book offers several examples of the dynamic interactions among questions of public concern or policy, EFR research, and natural resource management practices and policies. Often, trends observed – or expected -- in the early years of a research program are contradicted or confounded as the research record extends over decades. The EFRs are among the few areas in the US where such long-term research has been carried out by teams of scientists. Changes in society’s needs and values can also redirect research programs. Each chapter of this book reflects the interplay between the ecological results that emerge from a long-term research project and the social forces that influence questions asked and resources invested in ecological research. While these stories include summaries and syntheses of traditional research results, they offer a distinctly new perspective, a larger and more complete picture than that provided by a more typical 5-year study. They also provide examples of long-term research on EFRs that have provided answers for questions not even imagined at the time the study was installed.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 440
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 332
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1508
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 442
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