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Résultats de la recherche

Showing items 1 through 9 of 5.
  1. Library Resource
    janvier, 1989
    Zimbabwe, Afrique sub-saharienne

    Carrying capacity (CC) is a term often talked about in relation to livestock in the communal areas (CAs). It is the source of much confusion. This discussion paper will hopefully clarify some of the issues and make the implications for the policy debate clearer. It is based on the preliminary findings of field work carried out in Zvisharane District during 1986 and 1987.

  2. Library Resource
    janvier, 1990
    Botswana, Zimbabwe, Afrique sub-saharienne

    This document contains a collection of critical comments by experts working in the field of pastoralism with regard to several PDN papers.

  3. Library Resource
    janvier, 1990
    Zimbabwe, Afrique sub-saharienne

    In their recent paper, de Leeuw and Tothill (1990) discussed the shortcomings of estimating carrying capacity (CC) of pastoral systems in Africa. They noted the difficulty of determining available forage per animal due to high annual and spatial variability in plant production, seasonal changes in forage quantity and quality, livestock species mix, and the use of supplemental feeds.

  4. Library Resource
    janvier, 1990
    Botswana, Zimbabwe, Afrique sub-saharienne

    This article suggests that communual rangeland management policies in Botswana and Zimbabwe are based on incorrect technical assumptions about the stability of semiarid rangelands, the nature of rangeland degradation, and the benefits of destocking. Consequently, inappropriate policies, stressing the need to destock and stabilise the rangelands, are pursued.Acknowledgement of the great instability but intrinsic resilience of rangeland would encourage the Governments to more favourable regard the opportunistic stocking strategies of the agro-pastoralists of the Communual Areas.

  5. Library Resource
    Rapports et recherches
    décembre, 1989
    Zimbabwe, Afrique, Afrique australe

    Throughout Africa the importance of land use issues in relation to tsetse control planning has been emphasized consistently in the tsetse literature. Because of inappropriate land use, concerns for the environment in tsetse-freed areas have been expressed frequently. This debate is very relevant to Zimbabwe, where extensive tsetse control operations in recent years have confined the remaining area of tsetse infestation to parts of the Zambezi valley, a semi-arid region of the country with a fragile eco-system and limited agricultural potential.

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