Download or read book Production Rates in Commercial Thinning of Young growth Douglas Fir written by Thomas Cooper Adams and published by . This book was released on 1967 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response to Commercial Thinning in a 110 year Old Douglas fir Stand written by Richard L. Williamson and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Forest Service Research Paper PNW written by and published by . This book was released on 1965 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silvicultural Options for Young growth Douglas fir Forests written by and published by . This book was released on 2004 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book USDA Forest Service General Technical Report PNW written by and published by . This book was released on 1978 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Foresters Almanac 1977 written by and published by . This book was released on 1977 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report PNW GTR written by and published by . This book was released on 2002 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Economics Research at the Pacific Northwest Research Station to 2000 written by Donald F. Flora and published by . This book was released on 2003 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions for over 80 years by scientists at the Pacific Northwest Research Station to developments in economic theory, economic tools, policies, and economic issues are summarized. This is a story of progressive accomplishments set against a constantly changing background of economic and social events.

Download or read book Effects of Thinning on Yield of Douglas fir written by Donald L. Reukema and published by . This book was released on 1977 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Paper NE written by and published by . This book was released on 1986 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report SO written by and published by . This book was released on 1977 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Precommercial Thinning of Douglas fir written by Donald L. Reukema and published by . This book was released on 1975 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production of merchantable wood in even-aged Douglas-fir stands can be increased substantially by precommercial thinning. Guidelines for, and gains from, precommercial thinning both strongly depend on the size of trees wanted at the first commercial cut; the larger this size, (1) the fewer trees should be left after precommercial thinning, (2) the greater is the maximum age or tree size at which precommercial thinning is practical, and (3) the greater is the gain is usable yield from precommercial thinning. Also, generally, the longer the time required for a stand to reach commercial size without thinning, the greater the gains from precommercial thinning. These and other considerations are discussed, and procedures are recommended.

Download or read book Management of Young Growth written by Alan B. Berg and published by . This book was released on 1970 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Case history of an excellent white spruce cone and seed crop in interior Alaska written by and published by . This book was released on 1978 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Management and Redwood National Park written by United States. Congress. House. Committee on Government Operations. Conservation, Energy, and Natural Resources Subcommittee and published by . This book was released on 1976 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings Reports and Prints of the Senate Committee on Agriculture and Forestry written by United States. Congress. Senate. Committee on Agriculture and Forestry and published by . This book was released on 1976 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest and Rangeland Management written by United States. Congress. Senate. Committee on Agriculture and Forestry. Subcommittee on Environment, Soil Conservation, and Forestry and published by . This book was released on 1976 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt: