Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 92.
  1. Library Resource
    Rapports et recherches
    décembre, 2008
    Bangladesh, Bénin, Bhoutan, Bolivie, Botswana, Brésil, Burkina Faso, Tchad, Chili, Chine, Colombie, Équateur, Égypte, Érythrée, Éthiopie, Ghana, Honduras, Inde, Iran, Kenya, Laos, Mali, Mozambique, Népal, Nicaragua, Niger, Nigéria, Pérou, Afrique du Sud, Soudan, Thaïlande, Togo, Ouganda, Viet Nam, Zimbabwe, Afrique occidentale, Afrique centrale, Afrique, Asie, Amérique centrale, Amérique du Sud, Asie occidentale, Asie méridionale, Asia du sud-est, Afrique australe

    This reports summarizes and synthesizes activities and achievements of the CGIAR Challenge Program on Water and Food (CPWF) through the end of 2007. The CPWF is an intiative of the CGIAR designed to take on the global challenge of water scarcity and food security.

  2. Library Resource
    Rapports et recherches
    décembre, 2011
    Burkina Faso, Mali, Niger, Nigéria, Afrique, Afrique occidentale

    The Niger River Basin covers 7.5% of the African continent, and is shared between nine riparian

    countries. The basin countries can be categorized into water resources producers, consumers, both

    producers and consumers, and minimum contributors and consumers. As in the case for most

    transboundary rivers, upstream and downstream conflicts emanating from the development and

    utilization of the Niger River are inevitable and are expected to be intense, particularly given the

  3. Library Resource
    Rapports et recherches
    décembre, 2009
    Burkina Faso, Ghana, Afrique occidentale

    The Basin Focal Project Volta (BFP Volta) was developed along three main steps:

    Assessment of present conditions of the distribution of rural poverty, of farming

    systems with their productivity and water productivity;

    Analysis of opportunities and risks, especially under the double pressure of demography

    and possible climate change, and modeling of water resources to identify sensitivity of

    water allocation to development and climate scenarios; and

    Identification of research gaps and implementation plan.

  4. Library Resource
    Rapports et recherches
    juillet, 2016
    Burkina Faso, Mali, Afrique, Afrique occidentale

    The livestock sector is one of the major contributors in agriculture, by some estimates

    contributing up to 18% of the global greenhouse gas (GHG) emissions. Of this, about one

    third is reported to be due to land use change associated with livestock production, another

    one third is nitrous oxide from manure and slurry management, and roughly 25% is attributed

    to methane emissions from ruminant digestion. Recent analysis suggests that developing

    world regions contribute about two thirds of the global emissions from ruminants, with sub-

  5. Library Resource
    Rapports et recherches
    décembre, 2010
    Érythrée, Pérou, Bangladesh, Bénin, Bhoutan, Bolivie, Botswana, Brésil, Burkina Faso, Chine, Colombie, Équateur, Égypte, Éthiopie, Ghana, Honduras, Inde, Iran, Kenya, Laos, Mali, Mozambique, Népal, Nicaragua, Niger, Nigéria, Afrique du Sud, Soudan, Thaïlande, Togo, Ouganda, Viet Nam, Zimbabwe, Afrique occidentale, Asie méridionale, Asia du sud-est, Afrique centrale, Asie central, Afrique orientale, Amérique centrale, Amérique du Sud, Asie occidentale, Afrique septentrionale, Afrique australe

    The CPWF was designed to be different. Developed in response to a call for change in a previous round of Consultative Group on International Agricultural Research (CGIAR) system

    reform, the CPWF was intended to foster cross-CGIAR cooperation and find ways to bring in new partners. Over time the CPWF has successfully broadened the CGIAR’s sources of

    innovative research on water and food. Through its broad partnerships, the program conducts research that leads to positive impact on the poor and to policy change. The CPWF does this by

  6. Library Resource
    Articles et Livres
    avril, 2017
    Burkina Faso, Afrique, Afrique occidentale

    The fire severity of the 2013–2014 fire season within Sudanian ecosystems in Burkina Faso was evaluated from Landsat 8 images using derivatives of the Normalized Burn Ratio algorithm (NBR). The relationship between the image-derived severity and the field observed severity i.e. Composite Burn Index (CBI) was best described by a nonlinear model of the form y = a + b*EXP(CBI *c) (R2 = 0.66). Classification of the image-derived burned area into burn severity classes achieved a classification Kappa accuracy statistic of 0.56.

  7. Library Resource
    Rapports et recherches
    décembre, 2010
    Burkina Faso, Ghana, Asie, Afrique occidentale

    The Atankwidi Catchment, which lies in the White Volta Basin in West Africa, is intensively cultivated by locals for economic gains. During dry seasons, farmers irrigate their crops, chiefly tomatoes, using shallow groundwater harvested from shallow ponds they dig using simple tools like an axe, hoe, bucket and bowls. Recent expansion in cultivated areas has brought to the fore the need to estimate the volume of shallow groundwater stored in the catchment’s underlying aquifer and to what extent it can sustain the incremental growth in irrigated areas.

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