Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 6.
  1. Library Resource
    Documents de politique et mémoires
    août, 2010
    Tunisie

    Problems of unsustainable watershed use in the Mediterranean areas (overgrazing, forest degradation and clearing, soil erosion, fires, etc.) often result from the reduced profitability of traditional land use systems, lack of clearly defined property rights, insufficient enforcement of existing rules, and lack of adequate economic instruments.

  2. Library Resource
    Documents de politique et mémoires
    mai, 2011
    Égypte

    The objective of this article is to explain the hydraulic function of subsurface pipe drainage system on agricultural experimental field in Mashtul Pilot Area (Nile Delta) in non-steady state drainage flow conditions. Subsurface drainage structures were designed for the conditions of steady state drainage flow. However, in reality non-steady state drainage situations prevail. A model to solve the problem is presented. Boussinesq's equation was used to study the non-steady state drainage flow. The final expression of lowering of water table in time was approximated by Glover-Dumm.

  3. Library Resource
    Documents de politique et mémoires
    janvier, 2002
    Tunisie, Afrique, Afrique sub-saharienne, Afrique septentrionale, Asie occidentale

    The System-wide Program for Collective Action and Property Rights (CAPRi)sponsored an International Conference on Policy and Institutional Options for theManagement of Rangelands in Dry Areas, May 7-11, 2001 in Hammamet, Tunisia.

  4. Library Resource
    Documents de politique et mémoires
    décembre, 2007
    Soudan, Afrique orientale

    Despite the 2005 Comprehensive Peace Agreement, which brought to an end 20 years of civil warin the Sudan, this country continues to experience smaller-scale conflicts, particularly aroundaccess to and control of natural resources. Some observers lay the blame for this onethnopolitical or tribal divisions.

  5. Library Resource
    Documents de politique et mémoires
    décembre, 2010
    Soudan

    A number of factors influenced the increased number of crops on Slovenian farms legal limitation of maize production to two years on the same field, introduction of integrated crop production and certain measures of the Slovene Agri-Environmental Programme.

  6. Library Resource
    Documents de politique et mémoires
    août, 2011
    Soudan

    The traditional agriculture in Sudan occupies 60% of the total cultivated land and employs 65% of the agricultural population. Nevertheless, it is characterized by its low crop productivity, which is mainly driven by low technical efficiency, while drought and civil conflicts threaten most of its areas countrywide. Therefore, it has contributed only an average of 16% to the total agricultural GDP during the last decade.

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