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 Silvicultural Options for Young Growth Douglas Fir Forests written by Forest Service U.S. Department of Agriculture, Forest Service and published by CreateSpace. This book was released on 2015-02-14 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Descriptive statistics and some initial results are presented for an operation-scale study being conducted by Pacific Northwest Research Station and the Washington Department of Natural Resources in cooperation with the University of Washington and University of Idaho. The study compares a number of widely different silvicultural regimes applied to young-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in western Washington managed for multiple objectives. The first replicate was established in 1997-98. A second replicate was harvested in the summer of 2002 and a third is planned for 2004.

Download or read book Silvicultural Options for Young growth Douglas Fir Forests written by Robert O. Curtis and published by . This book was released on 2004 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silvicultural Options for Young growth Douglas Fir Forests written by Robert O. Curtis and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating Silvicultural Options for Harvesting Young growth Coastal Douglas fir Forests Using the Forest Vegetation Simulator FVS and the Landscape Management System LMS written by Nancy K. Allison and published by . This book was released on 2001 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silviculture for Multiple Objectives in the Douglas fir Region written by and published by . This book was released on 1998 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silviculture for Multiple Objectives in the Douglas fir Region written by and published by . This book was released on 1998 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Choices in Silviculture for American Forests written by Society of American Foresters and published by . This book was released on 1981 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Silvicultural Systems for the Major Forest Types of the United States written by United States. Forest Service. Division of Timber Management and published by . This book was released on 1973 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current trend toward the establishment and care of forests for a wide combination of uses requires flexibility in forest culture and a knowledge of the silvicultural choices available to the resource manager. This publication summarizes for each of 37 major forest types in the United States the silvicultural systems that appear biologically feasible on the basis of present knowledge. Supporting information is given on the occurrence of the 37 forest types, the cultural requirements of the component species, and the biological factors that control the choice of silvicultural options. The text is arranged in regional sections suitable for reprinting.

Download or read book Silvicultural Systems for the Major Forest Types of the United States written by United States. Forest Service. Timber Management Research and published by . This book was released on 1979 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current trend toward the establishment and care of forests for a wide combination of uses requires flexibility in forest culture and a knowledge of the silvicultural choices available to the resource manager. This publication summarizes the silvicultural systems that appear biologically feasible, on the basis of present knowledge, for each of 48 major forest types in the United States. Supporting information is given on the occurrence of the 48 forest types, the cultural requirements of the component species, and the biological factors that control the choice of silvicultural options.

Download or read book Silviculture for Multiple Objectives in the Douglas Fir Region written by Robert O. Curtis and published by . This book was released on 2000-01 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silvicultural knowledge & practice have been evolving in the Pacific Northwest for nearly a century. This report on research & management activities includes: foundations & definitions; historical development of silviculture in the Douglas-Fir Region; forest conditions, stand development, & management goals; generation methods; shaping development of young natural stands & plantations; harvesting considerations; providing diverse structures & habitats; maintaining site productivity; damaging agents & forest health; management choices; information needs; policy questions; references; management scenarios; & glossary.

Download or read book Largescale silviculture experiments of western Oregon and Washington written by and published by DIANE Publishing. This book was released on with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Permanent plot Procedures for Silvicultural and Yield Research written by Robert O. Curtis and published by . This book was released on 2005 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reviews purposes and procedures for establishing and maintaining permanent plots for silvicultural and yield research, sampling and plot design, common errors, and procedures for measuring and recording data. It is a revision and update of a 1983 publication. Although some details are specific to coastal Pacific Northwest conditions, most of the material is widely applicable.

Download or read book Uneven aged management of old growth spruce fir forests written by Robert R. Alexander and published by . This book was released on 1977 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Large scale Silviculture Experiments of Western Oregon and Washington written by Nathan Jeremy Poage and published by . This book was released on 2007 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: We review 12 large-scale silviculture experiments (LSSEs) in western Washington and Oregon with which the Pacific Northwest Research Station of the USDA Forest Service is substantially involved. We compiled and arrayed information about the LSSEs as a series of matrices in a relational database, which is included on the compact disc published with this report and available online at http://www.fs.fed.us/pnw/research/lsse. The LSSEs are both spatially and temporally large scale, with experimental treatment units between 5 and 100 acres and proposed study durations of 20 to 200 years. A defining characteristic of the LSSEs is that a broad range of response variables are measured to characterize the response of forest ecosystems to experimental treatments. We discuss the general value and limitations of the LSSEs and highlight some possible roles that can be played by the LSSEs in addressing management issues emerging at the beginning of the 21st century.

Download or read book Silviculture of Mixed Conifer Forests in Eastern Oregon and Washington written by Kenneth W. Seidel and published by . This book was released on 1981 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The silviculture of mixed conifer forests in eastern Oregon and Washington is described. Topics discussed include ecological setting, damaging agents, silviculture, and management. The relevant literature is presented, along with unpublished research, experience, and observations. Research needs are also proposed.