Le prsent numro d'Unasylva est ax sur l'valuation des ressources forestires au niveau mondial que la FAO vient d'achever, avec 1990 pour anne de rfrence (une valuation semblable avait t entreprise il y a 10 ans). Les articles, prsents dans ce numro examinent les donnes provenant de cette valuation, ainsi que certaines des questions sous-jacentes compliques qui se posent pour toute valuation des ressources forestires.
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Library ResourceJournal Articles & BooksDecember, 1993
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Library ResourceJournal Articles & BooksDecember, 1993Zambia, Malawi, Burundi, Zimbabwe, Africa
This document contains the papers presented at the Symposium on Biology, Stock Assessment and Exploitation of Small Pelagic Fish Species in the African Great Lakes Region. The symposium, jointly organized by the FINNIDA/FAO/AGFUND project Research for the management of fisheries on Lake Tanganyika (LTR) and the FAO/UNDP project Inland Fisheries Planning, Development and Management in Eastern/Central/Southern Africa (IFIP), was held in Bujumbura, Burundi from 25 to 28 November 1992.
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Library ResourceJournal Articles & BooksDecember, 1993Burkina Faso, Liberia, Nigeria, South Africa, Georgia, Mali, Zimbabwe, Italy, Ghana, Venezuela, Sudan, Niger, Cameroon
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Library ResourceJournal Articles & BooksDecember, 1993
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Library ResourceJournal Articles & BooksDecember, 1993Qatar, France, Bangladesh, Nigeria, Luxembourg, Iraq, El Salvador, Afghanistan, Zimbabwe, Sri Lanka, Vanuatu, Canada, Congo, Uruguay, Mozambique, Laos, Yemen, Philippines, Oman, Myanmar, Portugal, Paraguay, Ghana, Europe, Africa, Northern America, Asia
Dans de nombreuses régions du monde, les ressources en eau de plus en plus limitées et la mauvaise utilisation de l’eau douce mettent en péril le développement durable. Plus des deux tiers de l’eau prélevée dans les fleuves, lacs et nappes aquifères étant utilisés pour l’irrigation, l’agriculture est de plus en plus considérée comme la soupape de sécurité du système.
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Library ResourceJournal Articles & BooksDecember, 1993Italy
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Library ResourceJournal Articles & BooksDecember, 1993France, United States of America, Spain, Germany, China, Indonesia, Cuba, Thailand, Laos, Philippines, Singapore, Vietnam, Japan, Italy, Portugal, Netherlands, India, Brazil, Cambodia
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Library ResourceJournal Articles & BooksDecember, 1993Liberia, Nigeria, Italy, Indonesia, Ghana, Sierra Leone, Brazil, Austria, Africa
In the context of developing a practicable and cost effective method for obtaining a country’s forest area by remote sensing, the computer processing of NOAA AVHRR HRPT data covering Liberia was investigated. The only cloud-free scene then recorded turned out to be severely and unevenly affected by atmospheric haze. To mitigate the effects of this, the country was divided into six areas (strata) of more uniform haze conditions.
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Library ResourceJournal Articles & BooksDecember, 1993Burundi, Italy
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Library ResourceJournal Articles & BooksDecember, 1993
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