Download or read book Alternative Silvicultural and Harvesting Systems for Second growth Forests in British Columbia written by Andrew F. Howard and published by Canada-British Columbia Partnership Agreement on Forest Resource Development: FRDA II. This book was released on 1993 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Productivity and Cost of Partial and Clear Cutting with Two Cable Yarding Systems in Second growth Forests of Coastal British Columbia written by Andrew Frank Howard and published by . This book was released on 1996 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes field trials at two British Columbia sites to investigate alternative timber harvesting systems and their costs. Sites were selected from among those employing partial cutting and cable yarding systems. One site selected used a swing yarder and the other used a stationary yarder. Descriptions of the sites, equipment layouts, and yarding procedures are provided. A detailed time study was designed for the two harvesting systems using a computer-based system and the time study data were analyzed statistically to estimate harvest system productivity. Hourly costs for each harvest system were also calculated. The advantages and drawbacks of each system are discussed.
Download or read book Silvicultural Alternatives for the Management of Unstable Sites in the Queen Charlotte Islands written by Peter Richard William Sanders and published by BC, Ministry of Forests. This book was released on 1986 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest cover plays an important role in modifying the severity and frequency of natural soil mass wasting. Removal of the forest cover through forest harvesting and the associated engineering operations can alter natural processes and aggravate inherent instability. In the Queen Charlotte Islands, steep slopes, finely textured soils, frequent seismic activity, heavy precipitation, shallow rooting tree species, and high winds predispose the area to a high natural level of mass wasting. This preliminary appraisal reviews current silvicultural operations in the Islands and proposes alternatives. Traditional silvicultural systems are described and constraints imposed by the local conditions identified. Naturally occurring forests on the Queen Charlotte Islands are compared to projected managed forests that will replace them, and successional processes and their influence on mass wasting events are discussed. The report concludes by noting several research opportunities in the study of silviculture and mass wasting.
Download or read book Comparing Silvicultural Systems in a Coastal Montane Forest written by Eric J. Phillips and published by Canadian Forest Service. This book was released on 1996 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes a study in which three alternative silvicultural systems, representing a range of canopy removal levels, were implemented in a research area on eastern Vancouver Island. The three nine-hectare treatments (uniform shelterwood, green tree retention, patch cutting) were replicated three times. The study also included and old growth and a clear-cut control block. Harvesting was completed in 1993 and post-harvest studies will continue for another 20 years. Investigators monitored the productivity and cost of the falling and forwarding operations, and measured site disturbance and coarse woody debris for each harvesting treatment.
Download or read book Harvesting Systems and Equipment in British Columbia written by A. J. MacDonald and published by University of British Columbia Press. This book was released on 1999 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the various types of equipment and systems used for harvesting timber in British Columbia.
Download or read book Compatible Forest Management written by Robert A. Monserud and published by Springer Science & Business Media. This book was released on 2003-09-30 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Public debate has stimulated interest in finding greater compatibility among forest management regimes. The debate has often portrayed management choices as tradeoffs between biophysical and socioeconomic components of ecosystems. Here we focus on specific management strategies and emphasize broad goals such as biodiversity, wood production and habitat conservation while maintaining other values from forestlands desired by the public. We examine the following proposition: Commodity production (timber, nontimber forest products) and the other forest values (biodiversity, fish and wildlife habitat) can be simultaneously produced from the same area in a socially acceptable manner. Based on recent research in the Pacific Northwest, we show there are alternatives for managing forest ecosystems that avoid the divisive arena of 'either-or' choices. Much of the work discussed in this book addresses two aspects of the compatibility issue. First, how are various forest management practices related to an array of associated goods and services? Second, how do different approaches to forest management affect relatively large and complex ecosystems?
Download or read book Development and Structure of Three High elevation Old Spruce fir Stands in the Quesnel Highland of East central British Columbia written by O. A. Steen and published by University of British Columbia Press. This book was released on 2005 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study describes the composition, size and age structure, and development of three old Engelmann spruce-subalpine fir stands at high elevations (>1500 m) in the Quesnel Highland in east-central British Columbia. The descriptions provide a basis for designing alternative silvicultural systems that will maintain usable old-forest habitat for mountain caribou and other old-growth-dependent species. Subalpine fir, which comprised 86% of all stems in the three stands, had inverse-J-shaped size and age profiles. Engelmann spruce included the largest trees in each stand but had bimodal size and age profiles. Age structure interpretations suggest that the stands have developed over periods of about 290-450 years since the last major stand-level disturbances (probably wildfires). Current stand age structures contain no clear evidence of post-establishment stand-level disturbances, although the data do not exclude the possibility of such disturbances. Approximately 29% of the fir trees and 13% of the spruce trees were dead. Age analyses of the tree seedling banks in the three stands indicate stable populations with continuous recruitment during the last 40 years. Young seedlings occurred preferentially on woody debris in advanced stages of decay, suggesting that seedling density differences among stands may be due at least partially to differences in the amount of woody debris. The stand that apparently had the shortest time (about 290 years) for development since major disturbance had a structure that was still adjusting to disturbance. Evidence of this adjustment includes a bimodal fir age distribution and a high density of small trees that are apparently undergoing thinning. In addition, this stand had very few large (>60 cm dbh) live or dead trees and low volumes of coarse woody debris, especially in large and well-decomposed pieces, compared to the other two stands. A comparison of the three stands in this study suggests that naturally established high-elevation forests of the ESSFwc3 may not achieve some old-growth attributes, such as large dead trees and large, well-decomposed woody debris, until 400 or more years following initiation. The two stands in this study with the longest period of development (at least 450 years) had balanced size and age structures and well-represented old-growth attributes such as large dead trees and large, well-decayed woody debris. Planted stands may achieve some ESSFwc3 old-growth features several decades sooner than natural stands, due to a shorter stand initiation period. The alternative silvicultural system that has been proposed for maintaining suitable mountain caribou habitat following harvesting in this area (group selection system with 240-year rotation) will likely result in stands with many old-growth features, including abundant arboreal lichens. Some features that may not be present in these stands include a uniform inverse-J age distribution, many large (>60 cm dbh) live and standing dead trees, and large-diameter, well-decayed woody debris. As old stands in the ESSFwc3 continue to age without outside disturbance, the spruce component of the stands will likely decline. Partial harvesting would help to maintain a significant component of spruce in these stands.
Download or read book Financial Aspects of Alternative Harvest Cutting Methods and Silvicultural Treatments written by Patrick W. Daigle and published by . This book was released on 1992 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the National Silviculture Workshop written by and published by . This book was released on 1989 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Towards Sustainable Management of the Boreal Forest written by Philip Joseph Burton and published by NRC Research Press. This book was released on 2003 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a summary of the development in boreal forest management, this book provides a progressive vision for some of the world's northern forests. It includes a selection of chapters based on the research conducted by the Sustainable Forest Management Network across Canada. It includes a number of case histories.
Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2011 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Meeting on Planning and Implementing Forest Operations to Achieve Sustainable Forests written by Council on Forest Engineering. Meeting and published by . This book was released on 1996 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Management of Larix Forests written by and published by . This book was released on 1995 with total page 542 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 2005 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biodiversity Guidebook written by British Columbia. Ministry of Forests and published by University of British Columbia Press. This book was released on 1995 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides managers, planners and field staff with a recommended process for meeting biodiversity objectives - both landscape and stand level - as required under the Forest Practices Code.
Download or read book Current Abstracts written by and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report INT written by and published by . This book was released on 1995 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
