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Author: Washington (State). Department of Natural Resources
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 1
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Book Description
Author: Washington (State). Department of Natural Resources
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 1
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Book Description
Author:
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 2
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Book Description
Author: John R. Barnett
Publisher: CRC Press
ISBN: 9780849328190
Category : House & Home
Languages : en
Pages : 248
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Book Description
Perennial, wood density, tree growth, wood anatomy, reaction wood.
Author: Sam Sherrill
Publisher: Echo Point Books & Media
ISBN: 9781635610314
Category : Science
Languages : en
Pages : 226
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Book Description
A chance encounter with a fallen tree started professor and amateur woodworker Samuel Sherrill thinking: Is there a better way to stretch our precious natural resources? The question led to the writing of Harvesting Urban Timber. Sherrill explains how to identify potential urban timber, how to safely harvest it and convert it into useful lumber.
Author: Bruce J. Zobel
Publisher: Springer Science & Business Media
ISBN: 3642740693
Category : Technology & Engineering
Languages : en
Pages : 376
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Book Description
Wood is the usual end product of a forestry operation. Because of its importance, numerous studies have been made relative to wood prop erties, the causes of wood variation, and how best to develop wood for desired products. There is voluminous literature related to these subjects, but it is neither well known nor appreciated by foresters because the publications are often not available or are not well understood by the forester or by those who use the wood. Frequently, the literature is confusing and contradictory, making it difficult for the nonspecialist to use what information is available. In order to produce and use wood efficiently, the variation pat terns within trees, among trees within species, and among species must be understood. This also requires some knowledge of the causes of variation and the effects of different wood properties upon utiliza tion. The information about variation patterns, their causes, and con trol and effect upon the product must be known by the tree grower, the tree breeder, and the tree harvester as well as by those who ultimately convert wood into a final, salable product.
Author: Charles E. McGee
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 30
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Book Description
Low-quality hardwood stands present opportunity and challenge in the Interior Uplands. This guidebook discusses the primary causes of low-quality hardwood stands and offers management options for regenerating or improving these stands. Methods for evaluating stand and site potential are provided. A technique for comparing stands and prescribing treatment is also suggested.
Author: Bruce J. Zobel
Publisher: Springer Science & Business Media
ISBN: 3642721265
Category : Technology & Engineering
Languages : en
Pages : 311
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Book Description
The trend in forestry is toward shorter rotations and more complete utiliza tion of trees. The reasons are: (1) financial pressures to obtain rapid returns on the forestry investment made possible by an earlier harvest; (2) enforced harvest of young plantations to maintain a continuing supply of cellulose for mills where wood shortages are experienced; (3) thinning young plantations, both because they were planted too densely initially and because thinning is done where long rotation quality trees are the forestry goal; (4) more intensive utilization is being done using tops and small diameter trees; and (5) there is interest in using young (juvenile) wood for special products because of its unique characteristics and the development of new technologies. The largest present-day source of conifer juvenile wood is from thinnings of plantations where millions of hectares of pine were planted too densely. Because of the better growth rate resulting from improved silviculture and good genetic stock, plantations will need to be thinned heavily. As a result of this trend, young wood makes up an increasingly larger proportion of the total conifer wood supply each year. Large amounts of juvenile wood from hard woods are also currently available, especially in the tropics and subtropics, because of the fast growth rate of the species used, which results in shorter rotations and ess~ntially all juvenile wood.
Author: Isabel Allona
Publisher: Frontiers Media SA
ISBN: 2889631788
Category :
Languages : en
Pages : 185
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Book Description
This Research Topic addresses research in genomics and biotechnology to improve the growth and quality of forest trees for wood, pulp, biorefineries and carbon capture. Forests are the world’s greatest repository of terrestrial biomass and biodiversity. Forests serve critical ecological services, supporting the preservation of fauna and flora, and water resources. Planted forests also offer a renewable source of timber, for pulp and paper production, and the biorefinery. Despite their fundamental role for society, thousands of hectares of forests are lost annually due to deforestation, pests, pathogens and urban development. As a consequence, there is an increasing need to develop trees that are more productive under lower inputs, while understanding how they adapt to the environment and respond to biotic and abiotic stress. Forest genomics and biotechnology, disciplines that study the genetic composition of trees and the methods required to modify them, began over a quarter of a century ago with the development of the first genetic maps and establishment of early methods of genetic transformation. Since then, genomics and biotechnology have impacted all research areas of forestry. Genome analyses of tree populations have uncovered genes involved in adaptation and response to biotic and abiotic stress. Genes that regulate growth and development have been identified, and in many cases their mechanisms of action have been described. Genetic transformation is now widely used to understand the roles of genes and to develop germplasm that is more suitable for commercial tree plantations. However, in contrast to many annual crops that have benefited from centuries of domestication and extensive genomic and biotechnology research, in forestry the field is still in its infancy. Thus, tremendous opportunities remain unexplored. This Research Topic aims to briefly summarize recent findings, to discuss long-term goals and to think ahead about future developments and how this can be applied to improve growth and quality of forest trees.
Author: Scott J. Meiners
Publisher: Cornell University Press
ISBN: 1501771272
Category : Nature
Languages : en
Pages : 245
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Book Description
Tree by Tree is a warning and a toolkit for the future of forest recovery. Scott J. Meiners investigates the critical biological threats endangering tree species native to the forests of eastern North America, providing a needed focus on this plight. Meiners suggests that if we are to save our forests, the first step is to recognize the threats in front of us. Meiners focuses on five familiar trees—the American elm, the American chestnut, the eastern hemlock, the white ash, and the sugar maple—and shares why they matter economically, ecologically, and culturally. From outbreaks of Dutch elm disease to infestations of emerald ash borers, Meiners highlights the challenges that have led or will lead to the disappearance of these trees from forests. In doing so, he shows us how diversity loss often disrupts intricately balanced ecosystems and how vital it is that we pay more attention to massive changes in forest composition. With practical steps for the conservation of native tree species, Tree by Tree offers the inspiration and insights we need to begin saving our forests.
Author: United States. Congress Senate
Publisher:
ISBN:
Category :
Languages : en
Pages : 2738
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Book Description
