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Showing items 1 through 9 of 28.
  1. Library Resource
    Journal Articles & Books
    May, 1991
    Asia, Bangladesh

    Over millions of years, nature has built up an intricate system of relationship of exchange and mutual dependence among its elements - land, water, air, forest, sunlight and living things - to create what we call the ecosystem. It is the life support system of all living things on this planet and provides not oniy the daily needs but also saves resources for future generations. But this very life support system is endangered by man's aggression against nature. In the last few decades, the aggression has reached unprecedented levels.

  2. Library Resource
    Journal Articles & Books
    December, 1991
    Thailand

    This article explores the nature of property rights systems, their evolution, and their effect on resource allocation. It is argued that certain institutional arrangements for land rights have evolved in order to reduce uncertainty and increase efficiency in credit as well as in land markets. Of particular relevance to developing countries, the article emphasizes the contribution of public sector infrastructure to effective land rights systems.

  3. Library Resource
    Journal Articles & Books
    December, 1991
    Sweden, Cuba, Italy

    To anyone who is genuinely concerned for the future of both the world's forests and the populations who depend either directly or indirectly - on the use of these forests for their livelihood, it should be apparent that, rather than being a force for the destruction of forest resources, forest industry is and must continue to be an essential element in the process of valorizing these resources and thereby ensuring the socio-economic base for sustainable development.

  4. Library Resource
    Journal Articles & Books
    December, 1991
    Egypt, Bangladesh, Nigeria, Kenya, Israel, Chile, Peru, China, Ethiopia, Republic of Korea, Niger, Thailand, Nepal, Morocco, Philippines, Somalia, Italy, Tanzania, India, Sudan, Brazil
  5. Library Resource
    Journal Articles & Books
    December, 1991
    Italy

    As in the past, the Unasylva issue immediately preceding the World Forestry Congress examines a number of the broad challenges facing forestry. In an interview, FAO Director General Edouard Saouma considers the world forestry situation and highlights the Organization's priorities for work in forestry over the coming decade. The cutting edge of FAO's forestry activities is exemplified in the assistance provided to member countries; M.K. Muthoo, Director of the FAO Forestry Operations Service, describes the recent evolution of the department's field programme. M.R.

  6. Library Resource
    Journal Articles & Books
    December, 1991
    France, Zambia, Afghanistan, Zimbabwe, Australia, Greece, Guinea, Ethiopia, Pakistan, Colombia, Panama, Kenya, Jordan, Philippines, Libya, Italy, Botswana, Netherlands, Argentina, Sudan, Europe, Asia, Africa, Northern America

    Extensive grazing is the predominant form of land use on at least a quarter of the world’s land surface, in which livestock are raised on food that comes mainly from rangelands. Extensive grazing differs from crop or forestry production, in which the produce remains in situ whilst growing. Evaluation for extensive grazing, unlike that for cropping or forestry, must take into account the production of both grazing forage, termed primary production, and the livestock that feed on this forage, termed secondary production.

  7. Library Resource
    Journal Articles & Books
    December, 1991
    Congo, Italy

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  8. Library Resource
    Journal Articles & Books
    December, 1991
    Indonesia, Vanuatu, France, Italy, Europe

    Throughout history, the forests have been valued for the multiplicity of products and benefits that they provide, both for subsistence and for trade: foods, medicines, spices, resins, gums, latexes, wildlife, fuelwood, and of course timber and other wood products. The literature is rich with examples of international trade in forest products, many dating back thousands of years. Significantly, in most cases the products sought by traders were resins, oils, spices, and much less frequently timber.

  9. Library Resource
    Journal Articles & Books
    December, 1991
    Nepal, France, Bolivia, Sudan, Thailand, Italy

    To produce the desired results, therefore, watershed management efforts must incorporate "forest hydrology", "soil and water conservation" and "land use planning" into a broader, logical framework that takes into consideration not only physical interrelationships but economic, social and institutional factors as well. In this issue, Unasylva examines several facets of watershed management.

  10. Library Resource
    Journal Articles & Books
    December, 1991

    Ecological risk assessments are used by policy makers and regulatory agencies for balancing and comparing ecological risks associated with environmental hazards. An approach for regional—scale ecological risk assessment is described and demonstrated by modeling environmental risks associated with elevated ozone in a forested region. The demonstration illustrates (1) how a regional—scale risk assessment might be done, (2) the importance of spatial characteristics in considering regional—scale risk, and (3) the necessity of considering terrestrial and aquatic linkages.

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