Résultats de la recherche
Showing items 1 through 9 of 10.
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Library Resource
Namibie, Afrique sub-saharienne
Results from this study show that the over-used but under-researched association between grazing and land degradation in the Kalahari has been oversimplified. In typical Kalahari conditions, the ecological changes that have been brought about by grazing cannot be linked with more fundamental changes in ecosystem function. Basic soil processes appear relatively unaffected by grazing pressure outside the sacrifice zone, and there is no evidence to suggest that the resilience of the system has been affected through soil degradation.
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Library Resource
Israël, Asie occidentale, Afrique septentrionale
Paper explores the relationships between the following concepts under the conditions of Middle Eastern semi-arid ecosystems. Paper states that there are two apparent contradictions in the title of this paper. First, grazing by domestic livestock is often considered to be hostile to nature conservation, especially in semi-arid areas (the ongoing conflict between ranchers and environmentalists in western USA is just one contemporary example of this).
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Library Resource
Belize, Amérique latine et Caraïbes
Will intensifying the road network around market areas produce greater economic returns and less environmental damage than extending the road network into new areas?Rural roads promote economic development but also facilitate deforestation. To explore the trade-offs between development and environmental damage posed by road building, Chomitz and Gray develop and estimate a spatially explicit model of land use.
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Library Resource
Proposed here is a new scheme for allocating international river water that accounts for the stochastic nature of water supply and the dynamic nature of its demand. The suggested scheme is expected to improve the efficiency of river basins' water allocation and the riparians' welfare.International river and lake basins constitute about 47 percent of the world's continental land area, a proportion that increases to about 60 percent in Africa, Asia, and South America.
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Library Resource
Zimbabwe, Afrique sub-saharienne
This case study of Zimbabwe has examined developments in biotechnology against the background of a well-developed national agricultural research, plant breeding and seeds system. It has then assessed the constraints to biotechnology research, technology development and diffusion in the light of the resources available and the technology transfer mechanisms in place for different groups of farmers.
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Library Resource
Manual offers guidelines for using rapid appraisal methods to gather information on tenure and natural resource management. It translates the concepts elaborated in Community Forestry Note 5, rapid appraisal of tree and land tenure. The author defines rapid appraisal as "a family of methodologies designed to encourage the participation of local communities in the collection and use of information to improve their livelihood.
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Library Resource
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Library Resource
Asie occidentale, Afrique septentrionale
The report focuses on: the statue of land degradation: types of degradation, their nature, severity and extent; the causes and consequences of land degradation; institutions to combat land degradation; proposals for strengthening efforts to combat land degradation. Countries covered are: Afghanistan; Bangladesh; India; Bhutan; Iran; Pakistan; Nepal; Sri Lanka.
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Library Resource
Full text of the Convention to Combat Desertification, which was elaborated by the Intergovernmental Negotiating Committee (INCD) and signed in June 1994.Also available from the CCD WWW site in French and English
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Library Resource
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