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.
This paperback companion, shows how to use the colours and forms of heathers, conifers and other selected plants to create a garden attractive for all seasons, including winter.
Douglas-fir beetles and wood borers influence the rate of decomposition of Douglas-fir logs (Edmonds and Eglitis 1989). A study by Edmunds and Eglitis was done on the western slope of the Cascade Range ...
"Gives step by step instructions along with colour plates of how to create a relatively trouble free garden that retains year round interest. Lists recommended conifers and heathers for the garden." --Publisher description.
A Creative Step-by-step Guide to Heathers and Conifers
Comprehensive in scope and lavishly illustrated, this book offers expert advice on: size and growth rates; Canada/USA hardiness ratings; site and soil preferences; planting, maintenance and propagation; pruning, pests and diseases; dwarf ...
Conifer Country: A Natural History and Hiking Guide to 35 Conifers of the Klamath Mountain Region
A guide to using and growing conifers in gardens of any size, with design ideas, sources, and a directory of six hundred different conifers.
Over 600 conifer species and 2100 varieties and cultivars - all those known to be in cultivation - are described in this reference work, a companion to the same author's 3-volume Manual of Cultivated Broad-Leaved Trees and Shrubs.
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