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.
Résultats de la rechercheShowing items 1 through 9 of 33.
Library Resourcejanvier, 1995Namibie, Afrique sub-saharienne
Library Resourcejanvier, 1989Zimbabwe, 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.
Library Resourcejanvier, 1990Botswana, 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.
Library Resourcejanvier, 1988Soudan, Afrique sub-saharienne
This article investigates the encroachment on pastoralist grazing land in Sudan (as a result of the mechanised farming in the Sudan).
Library Resourcejanvier, 1992Zimbabwe, Afrique sub-saharienne
This paper is concerned with understanding cattle production in Zimbabwe's Communal Lands, in so-called communal farming systems. Although commercial offtake from Zimbabwe's communal cattle herd is low, communal farmers are productive and rational in their cattle herd management. The economic rationale for cattle ownership is firstly to provide draught power and manure for tillage and secondly to provide milk and meat for local consumption, although the role of livestock in the farming system varies significantly from one part of Zimbabwe to another.
Library Resourcejanvier, 1992Kenya, Afrique sub-saharienne
This paper employs an historical analysis to consider some of the consequences of conflicting resource use and political friction on resource exploitation within and outside Turkana District during this century. Given this historical context, development alternatives tested to ameliorate food insecurity are reviewed.The article proposes that the stage for political conflicts, environmental degradation and food insecurity within the region was set decades ago.
Library Resourcejanvier, 1990Zimbabwe, 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.
Library Resourcejanvier, 1993Inde, 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.
Library Resourcejanvier, 1985Nigéria, Afrique sub-saharienne
This paper is based on a series of studies conducted by the author on the settlement problems, work roles and educational experiments among nomadic Fulani in Plateau, Bauchi and Kaduna States, Nigeria, from 1982 to 1984.The first part of this paper describes the land tenure system in northern Nigeria and the way in which it affects pastoral nomads and plans for their settlement. The second part discusses the Nigerian Government;s intention to educate nomads and gives the example of special schemes which have attempted to do this.
Library Resourcejanvier, 1992Namibie, Afrique sub-saharienne
This article discusses the history of land reform in Namibia. The article indicates that at the time of writing (September 1991), it is still too early to comment on the implementation of land reform in Namibia, as it has not yet begun in earnest. Land policy has yet to be detailed and ratified, the institutions for implementing land reform and settlement programmes have to be appointed and in some cases created de novo, and large sums of money have to be found.
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