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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: 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: Paul Wood
Publisher: Hardie Grant Publishing
ISBN: 1787138984
Category : Nature
Languages : en
Pages : 177
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Book Description
Exploring the rich diversity of London through a series of urban forest trails, this new, expanded edition of London is a Forest uncovers the fascinating stories and secrets the city holds. Through seven carefully devised paths, author Paul Wood explores the urban forest's geography, its past and future, and looks at the remarkable variety of life supported in this unique metropolitan ecosystem. For curious Londoners and anyone who’s fascinated by nature, a wealth of arboreal details, history, myth and anecdotes are revealed along the way. Complementing the trails, Wood looks in more detail at the fascinating stories of some of the iconic, and some of the less obvious species that define the urban forest. In London, 9 million people are crammed into just 600 square miles alongside 8.5 million trees. According to one UN definition, this makes the city a forest. The Forestry Commission agree, describing London as the world’s largest urban forest. And a particularly diverse and historic urban forest at that.
Author: Harvard University. Maria Moors Cabot Foundation for Botanical Research
Publisher:
ISBN:
Category : Cambium
Languages : en
Pages : 588
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Book Description
Author: Rubin Shmulsky
Publisher: John Wiley & Sons
ISBN: 111942643X
Category : Science
Languages : en
Pages : 504
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Book Description
The updated seventh edition of the classic text on wood science and forestry The seventh edition of Forest Products and Wood Science: An Introduction offers a fully revised and updated review of the forest products industry. This classic text contains a comprehensive review of the subject and presents a thorough understanding of the anatomical and physical nature of wood. The authors emphasize its use as an industrial raw material. Forest Products and Wood Science provides thorough coverage of all aspects of wood science and industry, ranging from tree growth and wood anatomy to a variety of economically important wood products, along with their applications and performance. The text explores global raw materials, the increasing use of wood as a source of energy and chemicals and environmental implications of the use of wood. This edition features new material on structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals, and global raw materials. This seventh edition of the classic work: Contains new information on a variety of topics including: structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals and global raw materials Includes a fully revised text that meets the changing needs of the forestry, engineering, and wood science academics and professionals Presents material written by authors with broad experience in both the private and academic sectors Written for undergraduate students in forestry, natural resources, engineering, and wood science, as well as forest industry personnel, engineers, wood-based manufacturing and using professionals, the seventh edition of Forest Products and Wood Science updates the classic text that has become an indispensable resource.
Author: William Noyes
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 322
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Book Description
Author: Morris Lake
Publisher: CSIRO PUBLISHING
ISBN: 1486307795
Category : Science
Languages : en
Pages : 229
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Book Description
Australian Forest Woods describes about 130 of the most significant Australian forest trees and their wood. The introductory sections introduce the reader to the uniqueness and usefulness of forest trees. The book examines the forest tree species and their wood with photographs, botanical descriptions and a summary of the characteristics of the wood. A section on wood identification includes fundamental information on tree growth and wood structure. With over 900 images, this is the most comprehensive guide ever written on Australian forest woods, both for the amateur and the professional wood enthusiast. Macrophotographs of the wood are shown in association with a physical description of wood characteristics, which will aid identification. This technique was developed by Jean-Claude Cerre, France, and his macrophotographs are included in the book.
Author: Ken Mudge
Publisher: Chelsea Green Publishing
ISBN: 1603585079
Category : Gardening
Languages : en
Pages : 386
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Book Description
Learn how to fill forests with food by viewing agriculture from a remarkably different perspective: that a healthy forest can be maintained while growing a wide range of food, medicinal, and other nontimber products. The practices of forestry and farming are often seen as mutually exclusive, because in the modern world, agriculture involves open fields, straight rows, and machinery to grow crops, while forests are reserved primarily for timber and firewood harvesting. In Farming the Woods, authors Ken Mudge and Steve Gabriel demonstrate that it doesn’t have to be an either-or scenario, but a complementary one; forest farms can be most productive in places where the plow is not: on steep slopes and in shallow soils. Forest farming is an invaluable practice to integrate into any farm or homestead, especially as the need for unique value-added products and supplemental income becomes increasingly important for farmers. Many of the daily indulgences we take for granted, such as coffee, chocolate, and many tropical fruits, all originate in forest ecosystems. But few know that such abundance is also available in the cool temperate forests of North America. Farming the Woods covers in detail how to cultivate, harvest, and market high-value nontimber forest crops such as American ginseng, shiitake mushrooms, ramps (wild leeks), maple syrup, fruit and nut trees, ornamentals, and more. Along with profiles of forest farmers from around the country, readers are also provided comprehensive information on: • historical perspectives of forest farming; • mimicking the forest in a changing climate; • cultivation of medicinal crops; • cultivation of food crops; • creating a forest nursery; • harvesting and utilizing wood products; • the role of animals in the forest farm; and, • how to design your forest farm and manage it once it’s established. Farming the Woods is an essential book for farmers and gardeners who have access to an established woodland, are looking for productive ways to manage it, and are interested in incorporating aspects of agroforestry, permaculture, forest gardening, and sustainable woodlot management into the concept of a whole-farm organism.
Author: Christian Cossalter
Publisher: CIFOR
ISBN: 9793361638
Category :
Languages : ja
Pages : 66
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Book Description
A brief history of plantations. Environmental issues. Plantations and biodiversity. Water matters. Plantations and the soil. Pests: plantations' achilles' heel? Genetically modified trees: opportunity or treath? Plantations and global warming. Social issues. Employement: a contested balance sheet. Land tenure and conflict. Economic issues. Spiralling demand. Incentives and subsidies. Economies of scale. Costing the earth.
Author: Tom Wessels
Publisher: Nature
ISBN: 9780881504200
Category : Nature
Languages : en
Pages : 199
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Book Description
Chronicles the forest in New England from the Ice Age to current challenges
Author: Chris Maser
Publisher: CRC Press
ISBN:
Category : Business & Economics
Languages : en
Pages : 224
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Book Description
"This is a very readable book in which the ecological concepts are carefully explained and the glossary of key terms will be a welcome inclusion for those getting to grips with ecology. The book will therefore appeal to a wide readership of aquatic ecologists and foresters, both professional and amateur alike". Scottish Forestry Royal Scottish Forestry Society"...the book makes a very significant contribution to our growing awareness of the ecological importance of driftwood. This contribution is founded on two particular aspects of the book: the writing style, which is clear and directed very much at the general reader; and the scope of the book, which is very broad and, to my knowledge, goes far beyond other reviews of the topic". Angela Gurnell School of Geography, University of Birmingham British Journal of Forestry"This is not a review article containing a current review of all works on wood in aquatic ecosystems. Instead, it is a comprehensive treatment of the general role of wood". J.L. Tank and J.R. Webster Journal of the North American Benthological SocietyFrom the Forest to the Sea: The Ecology of Wood in Streams, Rivers, Estuaries and Oceans is a fascinating scientific work that discusses the role wood plays in very complex and diverse aquatic ecosystems. Until now almost nothing has been published on this little understood topic.-- European settlement and laissez-faire capitalism-- Streams-- The Sea-- The Sea and estuaries-- Rivers
