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Six Year Growth Of Douglas Fir Saplings After Manual Or Herbicide Release From Coastal Shrub Competition
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Book Synopsis Six-year Growth of Douglas-fir Saplings After Manual Or Herbicide Release from Coastal Shrub Competition by : William I. Stein
Download or read book Six-year Growth of Douglas-fir Saplings After Manual Or Herbicide Release from Coastal Shrub Competition written by William I. Stein and published by . This book was released on 1999 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Six-year Growth of Douglas-fir Saplings After Manual Or Herbicide Release from Coastal Shrub Competition by : William I. Stein
Download or read book Six-year Growth of Douglas-fir Saplings After Manual Or Herbicide Release from Coastal Shrub Competition written by William I. Stein and published by . This book was released on 1999 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper PNW. written by and published by . This book was released on 1978 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Silvicultural Research and the Evolution of Forest Practices in the Douglas-fir Region by :
Download or read book Silvicultural Research and the Evolution of Forest Practices in the Douglas-fir Region written by and published by . This book was released on 2007 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silvicultural 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.
Book Synopsis General Technical Report PNW-GTR by :
Download or read book General Technical Report PNW-GTR written by and published by . This book was released on 2007 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Fall River Long-term Site Productivity Study in Coastal Washington by :
Download or read book The Fall River Long-term Site Productivity Study in Coastal Washington written by and published by . This book was released on 2007 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fall River longterm site productivity study in coastal Washington site characteristics, methods, and biomass and carbon and nitrogen stores before and after harvest by :
Download or read book Fall River longterm site productivity study in coastal Washington site characteristics, methods, and biomass and carbon and nitrogen stores before and after harvest written by and published by DIANE Publishing. This book was released on with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Year in Review for the Pacific Northwest Research Station by : Pacific Northwest Research Station (Portland, Or.)
Download or read book A Year in Review for the Pacific Northwest Research Station written by Pacific Northwest Research Station (Portland, Or.) and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2000 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Development of Douglas-fir Seedlings and Associated Plant Species in a Coast Range Plantation by : Philip M. McDonald
Download or read book Ecology and Development of Douglas-fir Seedlings and Associated Plant Species in a Coast Range Plantation written by Philip M. McDonald and published by . This book was released on 1999 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Manual Release in an "old" Douglas-fir Plantation Increases Diameter Growth by : Philip M. McDonald
Download or read book Manual Release in an "old" Douglas-fir Plantation Increases Diameter Growth written by Philip M. McDonald and published by . This book was released on 1989 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twelve-year-old Douglas-fir saplings on the Mad River Ranger District, Six Rivers National Forest, Califomia were released by cutting competing vegetation in a 9-foot radius to test the timing and efficacy of this method in plantations older than 1 those in which such work traditionally is done--the I first 5 years. Nine years after release, the average stem diameter (3.60 inches or 9.14 cm) of released Douglas-fir saplings, taken at 12 inches (30 cm) above mean groundline, differed significantly from that of mntrol saplings (2.98 inches or 7.57 cm)(p 0.05), although the average height did nor differ (p 0.05). In spite of this finding, the stem diameter of released saplings was 40 percent less than that needed to comply with regional Forest Service growth objectives. Cost of release averaged $428 per acre or $1058/ha in 1978 dollars.
Book Synopsis Repeated Manual Release in a Young Plantation by : Philip M. McDonald
Download or read book Repeated Manual Release in a Young Plantation written by Philip M. McDonald and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Douglas-fir seedlings on the Arcata Resource Area, Bureau of Land Management, U.S. Department of the Interior, in central coastal California, were released by chain sawing and grubbing competing vegetation around them at different frequencies (0, 2, and 3 grubbings) over a 5-year period. After 5 years, average Douglas-fir stem diameter (measured at 12 inches above mean groundline) of seedlings grubbed at ages 1,2, and 5 was 0.91 inches, and of seedlings grubbed after the first and fifth growing season was 0.95 inches. Both were significantly larger than counterparts in the control (0.57 inches). Tanoak, the most competitive species, constituted 84 percent of total plant cover in the control after 5 years, but only 25 percent on treated plots. Combined shrubs varied little between the untreated control and treated plots and averaged about 7 percent of total foliar cover. Grasses were not present in the control and only for the fifth year in treated plots. The most abundant forb, a hedge nettle, increased greatly in density in both control and treated plots. These relationships and others denoted in the paper yield valuable ecological information on species and community dynamics in both a natural and treated environment. Crew time (no overhead or travel costs) for the three grubbings was 52 hours and for the two grubbings was 44 hours.
Book Synopsis Development of a Mixed Shrub-tanoak-Douglas-fir Community in a Treated and Untreated Condition by : Philip M. McDonald
Download or read book Development of a Mixed Shrub-tanoak-Douglas-fir Community in a Treated and Untreated Condition written by Philip M. McDonald and published by . This book was released on 1996 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Visitor Perceptions of Crowding and Discrimination at Two National Forests in Southern California by : Deborah J. Chavez
Download or read book Visitor Perceptions of Crowding and Discrimination at Two National Forests in Southern California written by Deborah J. Chavez and published by . This book was released on 1993 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Licensing News by : California. Professional Foresters Registration
Download or read book Licensing News written by California. Professional Foresters Registration and published by . This book was released on 2000 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Initial and Continued Effects of a Release Spray in a Coastal Oregon Douglas-fir Plantation by : Richard E. Miller
Download or read book Initial and Continued Effects of a Release Spray in a Coastal Oregon Douglas-fir Plantation written by Richard E. Miller and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis National Forests by : United States. General Accounting Office
Download or read book National Forests written by United States. General Accounting Office and published by . This book was released on 1986 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
