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Tropical Timbers of the World by Martin Chudnoff Pdf
Over the past two decades U.S. lumber imports from the tropics have increased fourfold. Plywood trade, mostly from Asian sources, has soared forty-fold and now equals our domestic production. Log imports, though, have decreased drastically from about 100 million board feet (log scale) in the 1950's to 30 million currently. Much of the world timber trade now is in the form of processed material. Many more tropical wood species and species groupings are being made available to U.S. processors. Most of these have been well known for many years on the European markets. This interest in supplemental supplies from overseas is in both softwoods and hardwoods. An extensive foreign literature has described the properties and uses of tropical woods, but much of it is no longer readily available. In this country the U.S. Forest Products Laboratory, over the years, issued 'Information Leaflets' or 'Foreign Wood Series' reports on some species of importance. But many of these are now out of print. The most recent comprehensive document, 'Properties of Imported Tropical Woods, ' contained a description of about 100 tropical genera.
Documentary Material on the Inter-American Conference on Agriculture, Forestry and Animal Industry, Washington, D.C., September 8-20, 1930 ... by Anonim Pdf
Author : United States. Department of State Publisher : Unknown Page : 452 pages File Size : 42,5 Mb Release : 1930 Category : Agriculture ISBN : UIUC:30112064226209
Documentary Material on the Inter-American Conference on Agriculture, Forestry and Animal Industry :$bWashington, D.C., September 8 to 20, 1930 by United States. Department of State Pdf
Timber, Tourists, and Temples by Richard B. Primack,David Bray,Hugo A. Galletti,Ismael Ponciano Pdf
Stretching across southern Mexico, northern Guatemala, and Belize, the Maya Forest, or Selva Maya, constitutes one of the last large blocks of tropical forest remaining in North and Central America. Home to Mayan-speaking people for more than 5,000 years, the region is also uncommonly rich in cultural and archaeological resources. Timber, Tourists, and Temples brings together the leading biologists, social scientists, and conservationists working in the region to present in a single volume information on the intricate social and political issues, and the complex scientifc and management problems to be resolved there. Following an introductory chapter that presents GIS and remote sensing data, the book: considers perspectives on managing forest resources and the forestry and conservation policies of each nation examines efforts by communities to manage their forest resources explains the connections between resource conservation and use by local people highlights research projects that integrate baseline biological research with impact assessments explains the need to involve local people in conservation effort Timber, Tourists, and Temples explores methods of supporting the biological foundation of the Maya Forest and keeping alive that unique and diverse ecosystem. While many areas face similar development pressures, few have been studied as much or for as long as the Maya Forest. The wealth of information included in this pathbreaking work will be valuable not only for researchers involved with the Maya Forest but for anyone concerned with the protection, use, and management of tropical forest ecosystems throughout the world.