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Mostrando ítems 1 a 9 de 201.
  1. Library Resource
    Informes e investigaciones
    Diciembre, 1992
    Kenya

    Effects of soils, vegetation and land use on infiltration
    rates and related soil physical properties of the semi-arid
    Sirima and Hukogodo catchments in Laikipia district were
    investigated. Representative six soils in Sirima and four
    soils in Hukogodo, surveyed at detailed level, were assessed.
    Within soil types, four site condition treatments with respect
    to vegetation cover and land use designated as Tr_ee/Bush _(TB),
    Open Grass (OG), Bare Ground (BG) and Cultivated Surface (CS)

  2. Library Resource
    Informes e investigaciones
    Diciembre, 1992
    Kenya

    The problem of vegetation degradation in Kenya's semi-arid areas must be addressed, if these areas are to support the increasing human and livestock population. However, efforts to rcvcgctatc denuded rangelands will be beneficial only if the right species and cultural practices arc employed.

  3. Library Resource
    Informes e investigaciones
    Febrero, 1992
    Kenya

    The intent of this study was to examine the impact of
    changing land use patterns on the numbers and distribution
    of livestock and wild herbivores in the Tana River District,
    Kenya.
    A multi-method approach of aerial surveys,
    questionnaires, interviews and secondary data sources were
    employed to realize the objectives.
    Results indicate that changes in land use patterns and
    types have created conflicts that led to the reduction of
    the range and affected distribution of pastoral livestock

  4. Library Resource
    Artículos de revistas y libros
    Diciembre, 1992
    Kenya

    This paper describes the environmental degradation that has occurred in Kenya since early this century, initially due to the introduction of plantation farming. Forests have been further targeted for farmland, fuel wood, building materials and hardwood species. Range land species have also become threatened due to continued infiltration of the population. The discussion considers the efforts of the Kenyan government to legislate and administrate against the further loss of natural resources and the consequent development of environmental awareness among the populace.

  5. Library Resource
    Informes e investigaciones
    Diciembre, 1992
    Kenya

    This thesis examines water quality status and deterioration in the Upper-
    Athi-Nairobi sub-catchments which covers an area of 1154.4 km2 with an annual
    discharge rate of 99242 m3/year (9.9 X 104 m3/yr). It is based on field and
    laboratory analysis of water quality parameters.
    The subject matter includes the assessment of land use processes
    responsible for water quality deterioration. These include Industrial and
    Agricultural activities. The study demonstrates how useful industrial

  6. Library Resource
    Informes e investigaciones
    Enero, 1992
    África

    African Agriculture is in crisis. Serious deterioration in the terms of trade, frequent droughts, growing expenditure on food imports, and rapid population growth on an ecologically fragile agricultural resource base have, all combined to prevent African agriculture from playing its vital role as the engine of economic development of the continent.

  7. Library Resource
    Informes e investigaciones
    Septiembre, 1992
    África

    The report presents the benefits of nuclear technology, the central role played by the International Atomic Energy Agency (IAEA) of the United Nations in the transfer of nuclear technology applied to food and agriculture, as well as the experiences of Africa and some other developing regions in the acquisition of the technology. Some briefs are given on the discussions with scientists and technologists during missions to three African countries before concluding the report with recommendations.

  8. Library Resource
    Diciembre, 1992
    África

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