Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 575.
  1. Library Resource
    Articles et Livres
    novembre, 2011
    Jordanie, Asie occidentale

    The rangelands of West Asia and North Africa are the grazing grounds for the Bedouin with their flocks of sheep, goats and camels and are known as al Badia in the Middle East region. Average annual rainfall in the Badia ranges between 50 and 250 mm (Haddad 2006). Despite its scarcity, rainwater is generally poorly managed and much of it is lost through runoff and evaporation. To improve production in hese areas, there is a need for the sustainable management of natural resources – land and water (FAO 1983).

  2. Library Resource
    Articles et Livres
    janvier, 2011
    Soudan, Afrique septentrionale

    The literature identifies two common approaches for estimating technical efficiency. One approach is based on non-parametric, non-stochastic, linear programming. This suffers from the criticism that it does not take into account the possible influence of measurement error and other noise in the data (Coelli, 1995). The second approach uses econometrics to estimate a stochastic frontier function, and to estimate the inefficiency component of the error term. The disadvantage of this approach is that it imposes an explicit and possibly restrictive functional form on the technology.

  3. Library Resource
    Articles et Livres
    septembre, 2013
    Chine, Asie orientale

    Implementation of land management policies influences land use and hence
    causes environmental change. Taking the Ordos rangelands in China as a case
    study, this paper explores the potential of remote sensing to assess in dryland
    areas the impacts of policies on the environment. Thirteen Landsat images of the
    period 1978 2010 were acquired and those corresponding to the starting dates of
    implementation of different policies were selected for land-cover change analysis;
    others were used to check the detected change and track the normalized

  4. Library Resource
    Manuels et directives
    novembre, 2013
    Global

    This laboratory manual of analytical methods has been compiled to be used primarily by research
    assistants, technicians and student trainees working in the laboratory. The methods have been
    selected from different sources and adapted for routine analyses in the WANA region. A detailed
    description of the methods can be found in the original publications listed in the references. As
    analytical techniques are developed and improving, this manual will be subject to continuous
    revision. Any helpful suggestion and feedback from users is most appreciated.

  5. Library Resource
    Documents et rapports de conférence
    juin, 2002
    République arabe syrienne, Asie occidentale

    The world is witnessing a period in its history when the increasing socio-political upheavals are taking the lives of thousands, and destroying the natural wealth of our planet. Poverty and food insecurity are two key forces driving this destruction. These ongoing problems compound those already being posed by an increasing shortage of water, scarcity of productive land, an expanding population, and the threat of global warming.

  6. Library Resource
    Rapports et recherches
    juin, 2003
    Arménie, Azerbaïdjan, Érythrée, Éthiopie, Géorgie, Kazakhstan, Kirghizistan, Pakistan, Soudan, Tadjikistan, Turkménistan, Ouzbékistan, Afrique orientale, Afrique septentrionale, Asie méridionale, Asie central, Asie occidentale

    The year 2002 marked ICARDA's 25th anniversary, and coincided with several honors and awards for the center's excellence in research. Research on developing high-yielding kabuli chickpea varieties that thrive in cool, wet winter conditions earned the 2002 King Baudouin Award of the Consultative Group on International Agricultural Research (CGIAR), jointly with the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), which focuses on desi chickpea.

  7. Library Resource
    Ressources et Outils d'entraînement
    mai, 2017
    Tunisie, Afrique septentrionale

    This presentation presented the concept and design of the GeOC tool. This presentation comes under the introductory session of the training "Sustainable Land Management Options by Context: Approach and Geospatial tool to support Achieving Land Degradation Neutrality”, held in Zaghouan on 16-17 March 2017.

  8. Library Resource
    Documents et rapports de conférence
    juillet, 2015
    Éthiopie, Afrique orientale

    The database consists of data on soil properties of both on station and 20 farmer fields, household characteristics of 301 households, woreda level crop production statistics for the past 5 years, land use maps and data and long-term historical climate data for Adamitullu in Oromia region, Ethiopia

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