Download or read book Financial consequences of commercial thinning regimes in young growth Douglas fir written by Robert M. Randall and published by . This book was released on 1977 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Financial consequences of commercial thinning regimes in young growth Douglas fir written by Robert M. Randall and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Young Douglas fir to 16 Years of Intensive Thinning written by John C. Tappeiner and published by . This book was released on 1982 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 20-year-old Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stand in the Oregon Coast Range was thinned from about 1,700 to about 350 trees/ac. Subsequent thinnings, under eight different regimes, occurred at ages 23, 27, 30, and 32. Average net periodic cubic-volume growth was strongly influenced by thinning regime, varying from about 220 ft /ac/yr (heavy thinning age 30) to over 550 ft /ac/yr (controls age 23). The results indicate that young Douglas-fir on productive sites (site index 160 to 170 ft at 100 years) are extremely adaptable and will respond to frequent thinnings of various intensities. Three representative treatments (after thinning at age 32) and the controls were projected and optimized with dynamic programming for two financial analyses. Adjusting rotation or commercial thinning can compensate for lack of early stand management or heavy early thinning.

Download or read book U S D A Forest Service Research Note PNW written by Pacific Northwest Forest and Range Experiment Station (Portland, Or.) and published by . This book was released on 1977 with total page 8 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 General Technical Report RM written by and published by . This book was released on 1982 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Errors from application of western hemlock site curves to mountain hemlock written by Francis R. Herman and published by . This book was released on 1976 with total page 354 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 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 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 Production Rates in Commercial Thinning of Young growth Douglas Fir written by and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aggregate Timber Supply Analysis written by Ralph J. Alig and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1978 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Download or read book More from Our Forested Resources written by United States. Forest Service and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Service Research Accomplishments written by and published by . This book was released on 1977 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Accomplishments written by and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production Rates in Commercial Thinning of Young growth Douglas fir written by Thomas C. Adams and published by . This book was released on 1967 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: