Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 18.
  1. Library Resource
    Articles et Livres
    décembre, 2016
    Argentine, Burkina Faso, République centrafricaine, Chine, Cameroun, Algérie, Érythrée, Éthiopie, Mali, Mauritanie, Niger, Nigéria, Soudan, Sénégal, Soudan du Sud, Tchad, Asie central

    It took scientists more than three decades to transform a perceived desertification crisis in the Sahel into a non-event. Looking beyond the Sahel, the chapters in this book provide case studies from around the world that examine the use and relevance of the desertification concept.

  2. Library Resource
    Articles et Livres
    décembre, 2016
    Algérie, Maroc, Tunisie

    States of ecological maturity and temporal trends of drylands in Morocco, Algeria and Tunisia north of 28 N are reported for 1998–2008. The input data were Normalized Difference Vegetation Index databases and corresponding climate fields, at a spatial resolution of 1 km and a temporal resolution of one month. States convey opposing dynamics of human exploitation and ecological succession. They were identified synchronically for the full period by comparing each location to all other locations in the study area under equivalent aridity.

  3. Library Resource
    Articles et Livres
    janvier, 2016
    Tunisie, Afrique septentrionale

    This study was carried out at the communal rangelands of Dhahar, Saharan area of Southern Tunisia, to assess the impact of restoration and rehabilitation techniques on natural vegetation cover. Two rangeland types (Rhanterium suaveolens and Anthyllis sericea) were subjected to three management modes: two years rest (M), reseeding Stipagrostis pungens (S) and free grazing (T). In all plots, total plant cover, species richness and grass density where determined in spring 2008.

  4. Library Resource
    Articles et Livres
    décembre, 2016
    Algérie, Égypte, Maroc, Afrique du Sud, Canada, Tunisie, Soudan

    The aim of the practical guidelines presented in this document is to support the adoption and usability of the criteria and indicators (C&I) for Sustainable Management of Forests and Rangelands (SFRM) adopted by the 22nd Session of the Near East Forestry and Range Commission (NEFRC). The guidelines are based on the review of existing literature and on consultations with national experts and relevant institutions in Morocco, Sudan and Tunisia regarding challenges identified in the use of the prop osed C&I for SFRM.

  5. Library Resource
    avril, 2016
    Maroc

    La présente loi fixe les principes et les règles générales régissant l’aménagement et la gestion des espaces pastoraux et sylvo pastoraux, l’utilisation et le développement des ressources pastorales, la transhumance pastorale et la mobilité des troupeaux.

  6. Library Resource
    Articles et Livres
    février, 2016
    Soudan, Afrique, Afrique occidentale

    Evaluation of existing and potential feed resources was conducted in Orodora district in the Southern region of Burkina Faso using Feed Assessment Tool (FEAST). The assessment was carried out through focus group discussions and individual interviews in Mahon and Sayaga communities in Orodara district. The study sites were characterized by mixed crop-livestock production systems. Seventy-percent of cropping activities were focused on fruit tree cultivation while food crop production accounted for the rest.

  7. Library Resource
    Articles et Livres
    décembre, 2016
    Mali, Sénégal, Mauritanie, Burkina Faso, Algérie, Niger, Nigéria, Tchad, Soudan, Soudan du Sud, Érythrée, Cameroun, République centrafricaine, Éthiopie, Afrique occidentale

    Les études sur la transhumance ont souvent ciblé les pasteurs – notamment peuls – des zones sahéliennes. Pour en donner une autre perspective, la présente étude a été centrée sur les pratiques de la transhumance dans la zone soudano-sahélienne du Mali en intégrant la perception des agriculteurs et des pasteurs sédentaires concernés par la transhumance dans les zones d’accueil. Les scénarios envisageables pour le futur des systèmes pastoraux ont aussi été analysés. Les données ont été collectées à travers des groupes de discussion et des enquêtes individuelles.

  8. Library Resource
    Articles et Livres
    décembre, 2016
    Tunisie

    Desert rangelands are characterised by low and highly variable rainfall regime, low forage production and high heterogeneity in the distribution of natural resources. This study was carried out in the desert rangelands of Tunisia to evaluate the response of different rangelands to annual rainfall in terms of aboveground net primary production (ANPP) and rain use efficiency over a 10‐year period (2003–2012). In general, ANPP values were relatively low (123 kg DM ha⁻¹ y⁻¹) but would tend to increase with increasing annual rainfall for all rangeland types.

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