Selective Timber Management in the Douglas Fir Region
Author: Burt Persons Kirkland
Publisher:
Published: 1936
Total Pages: 176
ISBN-13:
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Author: Burt Persons Kirkland
Publisher:
Published: 1936
Total Pages: 176
ISBN-13:
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Publisher:
Published: 2003
Total Pages: 132
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DOWNLOAD EBOOKAuthor: Horace Justin Andrews
Publisher:
Published: 1940
Total Pages: 180
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DOWNLOAD EBOOKThe highest service that forests of the Douglas-fir region can render is in support and stabilization of communities dependent on them. Forests support in one way or another about half the population of the region. To redeem this enormous responsibility for service, forests must furnish a permanent annual harvest of material equal at least to present production. This will required sustained-yield forest practice, including acceptance of the responsibilities of permanent ownership.
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Published: 2004
Total Pages: 582
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Published: 1991
Total Pages: 684
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DOWNLOAD EBOOKAuthor: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher:
Published: 1935
Total Pages: 436
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DOWNLOAD EBOOKAuthor: Ivan Doig
Publisher:
Published: 1976
Total Pages: 44
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Published: 1927
Total Pages: 964
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DOWNLOAD EBOOKAuthor: United States. Division of Forest Economics
Publisher:
Published: 1941
Total Pages: 194
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Published: 2007
Total Pages: 176
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DOWNLOAD EBOOKSilvicultural practices in the Douglas-fir region evolved through a combination of formal research, observation, and practical experience of forest managers and silviculturists, and changing economic and social factors. This process began more than a century ago and still continues. It has had a great influence on the economic well-being of the region and on the present characteristics of the regions forests. This long history is unknown to most of the public, and much of it is unfamiliar to many natural resource specialists outside (and even within) the field of silviculture. We trace the history of how we got where we are today and the contribution of silvicultural research to the evolution of forest practices. We give special attention to the large body of information developed in the first half of the past century that is becoming increasingly unfamiliar to both operational foresters andperhaps more importantlyto those engaged in forestry research. We also discuss some current trends in silviculture and silviculture-related research.