Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 32.
  1. Library Resource
    janvier, 1995
    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.

  2. Library Resource
    janvier, 2006
    Afrique du Sud, Afrique sub-saharienne

    The project aims to support small-scale farmers in the project area in their efforts to adapt their farming practices to anticipated climate change and to enhance their incomes.

  3. Library Resource
    janvier, 2012
    Afrique du Sud

    Surplus woody plants in areas where there is bush thickening present an opportunity to harvest the wood as bio-fuel. The health of the ecosystem and rangeland restoration must, however, always be prioritised during any tree harvesting for bio-fuel. In South Africa, indigenous woody plants are a prominent feature of the savannah, the largest of the vegetation biomes in South Africa and the Southern African sub-continent.

  4. Library Resource
    janvier, 2012
    Lesotho, Afrique sub-saharienne

    Agriculture remains a major source of income for more than 80 per cent of the rural population in Lesotho, although the country's arable land is only about nine per cent of the total land area. Moreover, the rural economy has been declining due to poor land and water resources management, unsustainable farming practices and unpredictable weather conditions. Communities living on marginal lands whose livelihoods depend on natural recourses are among the most vulnerable to climate change.

  5. Library Resource
    janvier, 2010
    Angola, Mozambique, Zambie, Lesotho, Zimbabwe, Namibie, Botswana, Eswatini, Afrique du Sud, Malawi, Afrique sub-saharienne

    It has emerged quite clearly from Urban LandMark’s work in South Africa – and increasingly in the region – that the emergence of more sophisticated property markets has taken place locally and in most larger cities in the region. While there might be a need to assist these markets to develop further, in particular the need to build market institutions and professions, these groupings tend to increase their own capacities as the markets develop, mostly with little assistance.

  6. Library Resource
    janvier, 2011
    Angola, Mozambique, Zambie, Lesotho, Zimbabwe, Namibie, Botswana, Eswatini, Afrique du Sud, Malawi, Afrique sub-saharienne

    Current estimates of climate change state that the world’s average temperature is due to increase by at least 2oC to 2.4oC over the next 50?100 years. Furthermore it is expected that by the end of the century a range of additional impacts will be felt: sea levels will rise by an estimated 60cm, resulting in flooding and the salinisation of fresh water aquifers, and snow and ice cover will decrease. Simultaneously, precipitation patterns will change so that some areas will receive large increases whilst other areas will become hotter and drier.

  7. Library Resource
    janvier, 2009
    Afrique du Sud

    This paper investigates the impact of climate variability on maize yield in the Limpopo Basin of South Africa using the Generalized Maximum Entropy (GME) estimator and Maximum Entropy Leuven Estimator (MELE). Maize constitutes about 70 percent of grain production and covers about 60 percent of the cropping area in South Africa. It is a summer crop, mostly grown in semiarid regions of the country, and is highly susceptible to changes in precipitation and temperature.

  8. Library Resource
    janvier, 2007
    Zambie, Afrique du Sud, Zimbabwe, Afrique sub-saharienne

    Adaptation to climate change involves changes in agricultural management practices in response to changes in climate conditions. It often involves a combination of various individual responses at the farm-level and assumes that farmers have access to alternative practices and technologies available in the region.

  9. Library Resource
    janvier, 2002
    Mozambique, Éthiopie, Namibie, Afrique sub-saharienne

    A University of Leeds collaborative study has probed links between environmental change and famine – two problems perceived to lie at the heart of Africa’s current crisis – in the context of another all too often linked to the continent - warfare and civil unrest. Land hunger and environmental depletion in the aftermath of war are often cited as causes of famine that in turn will lead to further conflict. Is such a chain reaction really at work? Is there an inevitable causal link between environmental degradation and violent conflict?

  10. Library Resource
    janvier, 2014
    Afrique du Sud

    This study sought to determine a 22-year past and future land use and land cover trend and its implication on green spaces in an eThekwini Municipal Area’s peripheral settlement. Results show a consistent pattern of decline in land use and land cover types associated with green spaces and an increase in impervious surfaces. The study is taken to confirm recent urban bio-physical transformation and anticipated increased pressure on peripheral urban green spaces in eThekwini Municipality.

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