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Author: Conifers Network. Meeting
Publisher: Bioversity International
ISBN: 9290434767
Category : Conifers
Languages : en
Pages : 66
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Book Description
Author: Conifers Network. Meeting
Publisher: Bioversity International
ISBN: 9290434767
Category : Conifers
Languages : en
Pages : 66
Get Book Here
Book Description
Author:
Publisher: Bioversity International
ISBN: 9290437685
Category :
Languages : en
Pages : 78
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Book Description
Author: Conifers Network. Meeting
Publisher: Bioversity International
ISBN: 9290436255
Category : Conifers
Languages : en
Pages : 76
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Book Description
Author:
Publisher: Bioversity International
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
Author:
Publisher: Bioversity International
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
Author: Jarkko Koskela
Publisher: Bioversity International
ISBN: 9290436689
Category : Black poplar
Languages : en
Pages : 136
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Book Description
Author: Aljos Farjon
Publisher: IUCN
ISBN: 9782831704654
Category : Nature
Languages : en
Pages : 142
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Book Description
Conifers are one of the world's most important resources of timber. If managed wisely and used sustainably, these resources will provide wood for a multitude of purposes, virtually indefinitely. Additional products include resins and their derivatives, and even medicinal extracts--for example taxol now used in the treatment of cancer. Conifers occur on all continents except Antarctica. Of the 630 species, 355 are listed as of conservation concern, with 200, or 25 of species, threatened with extinction. Although exploitation of these resources is as old as civilization, this century has seen a dramatic increase in the exploitation of timber resources. This action plan assess conifer diversity and its threats. It is unique among IUCN's Plant Action Plans so far published, in that it gives the complete global red list of conifers using the 1994 IUCN Red List Categories and criteria. Data is analyzed to identify "conifer hot spots", where conservation should be a priority, and a short-list of threatened species is prioritized.
Author:
Publisher: Bioversity International
ISBN:
Category :
Languages : en
Pages : 30
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Book Description
Author: Vernon Hilton Heywood
Publisher: Bioversity International
ISBN: 9290436980
Category : Electronic books
Languages : en
Pages : 188
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Book Description
Author: Peter S Savill
Publisher: CABI
ISBN: 1786393921
Category : Technology & Engineering
Languages : en
Pages : 413
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Book Description
British woodlands and forests are often located on sites and in regions that are marginal for agriculture; many are at high elevations and exposed, with short growing seasons. Wherever forests are located, site and climatic conditions must dictate species choice in forest management. This book provides a detailed guide to the biological suitability of different sites and soils for all important native trees and the most extensively used exotics. Apart from physical difficulties such as steepness and stoniness, forest soils also frequently have problems associated with them. They can be waterlogged or drought-prone, suffer from extremes of acidity or alkalinity, or have compacted layers. The book provides information on species' suitability for different purposes. It includes details of species' origin and introduction (where applicable), as well as their climatic and soil requirements and other silvicultural characteristics. Information about provenance, yield and timber is also provided. Fully updated throughout, this 3rd edition puts more emphasis on species suitable for changing climatic conditions, with accounts of several species that may become more prominent in British forests: including several silver firs, hickories, eucalypts, spruces, poplars and wingnuts. The book concludes with simple keys for identifying the trees most likely to be encountered in British forests. It is an essential resource for students, researchers and forestry professionals.
