Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 6.
  1. Library Resource
    janvier, 1993
    Inde, Asie méridionale

    The paper begins with a literature review of the basic theories which underpin range science. Two major approaches for determining carrying capacity (CC) are described, animal or plant oriented. The inherent problems with each approach are discussed in the light of a recent, wider debate, questioning the validity of CC as a range management tool.Methodological approaches for determination of CC, with inherent problems, are discussed.

  2. Library Resource
    janvier, 1994
    Afrique sub-saharienne

    This paper focuses on extracts from a recent comparative analysis of livestock and land use surveys across a range of agro-climatic conditions in sub-Saharan Africa, based on information from systematic low level aerial reconnaissance and complementary ground studies in Mali, Niger, Nigeria, Sudan and Tchad, between 1980 and 1993.

  3. Library Resource
    janvier, 1993
    Botswana, Afrique sub-saharienne

    Paper attempts to dispel some of the confusion surrounding the application of the range degradation concept in Botswana. It has three objectives. First, to present the current thinking of range ecologists vis-a-vis range degradation. Second, to dismiss recent arguments that range degradation in Botswana is insignificant.

  4. Library Resource
    janvier, 1993
    Botswana, Afrique sub-saharienne

    A useful debate is developing over carrying capacity and the degradation of communal rangelands in sub-Saharan Africa. With a few lonely exceptions, scientists and policy-makers have in the past claimed that degradation is universal and livestock productivity lowered because of overstocking on communal range. This position has been mainly dogmatic. More recent research has not supported dogmatists; hence the debate, which impinges on livestock development policy in Botswana.A new livestock development policy is being promoted by the Government of Botswana (Ministry of Agriculture 1991).

  5. Library Resource
    janvier, 1993
    Botswana, Afrique sub-saharienne

    Recent arguments have stated that the new livestock development policy will carry a high social cost, that the reality of range degradation in Botswana has been ignored, and that there is no basis for assuming that de-stocking would decrease the productivity of rangeland.

  6. Library Resource
    janvier, 1993
    République arabe syrienne, Asie occidentale, Afrique septentrionale

    This article looks at the changes which are taking place in the Syrian semi-nomadic bedouin flocks' feeding and migration patterns, and the historical reasons for these changes. Most of the discussion will focus on three steppe-based villages in northern Syria, where the International Center for Agricultural Research in Dry Areas (ICARDA) undertook a three-year survey between 1978 and 1981, and where a follow-up study was done this year.

Rechercher dans la bibliothèque foncière

Grâce à notre moteur de recherche robuste, vous pouvez rechercher n'importe quel document parmi les plus de 64 800 ressources hautement conservées dans la bibliothèque du foncier.

Si vous souhaitez avoir un aperçu de ce qui est possible, n'hésitez pas à consulter le guide de recherche.

 

Partagez cette page