Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 7.
  1. Library Resource

    Volume 10 Issue 2

    Publication évaluée par des pairs
    février, 2021
    République démocratique du Congo, Honduras, Iraq, Norvège, Panama, Pérou, Soudan, Somalie, Soudan du Sud, États-Unis d'Amérique

    According to the United Nations (UN) Refugee Agency, there were 79.5 million forcibly displaced people worldwide by the end of 2019. Evictions from homes and land are often linked to protracted violent conflict. Land administration (LA) can be a small part of UN peace-building programs addressing these conflicts. Through the lens of the UN and seven country cases, the problem being addressed is: what are the key features of fit-for-purpose land administration (FFP LA) in violent conflict contexts?

  2. Library Resource

    Volume 9 Issue 6

    Publication évaluée par des pairs
    juin, 2020
    Algérie, Soudan, Érythrée, Éthiopie, Soudan du Sud, Cameroun, République centrafricaine, Tchad, Burkina Faso, Mali, Mauritanie, Niger, Nigéria, Sénégal

    The Re-Greening of the West African Sahel has attracted great interdisciplinary interest since it was originally detected in the mid-2000s. Studies have investigated vegetation patterns at regional scales using a time series of coarse resolution remote sensing analyses. Fewer have attempted to explain the processes behind these patterns at local scales. This research investigates bottom-up processes driving Sahelian greening in the northern Central Plateau of Burkina Faso—a region recognized as a greening hot spot.

  3. Library Resource

    Volume 9 Issue 5

    Publication évaluée par des pairs
    mai, 2020
    Algérie, Soudan, Érythrée, Éthiopie, Soudan du Sud, Cameroun, République centrafricaine, Tchad, Burkina Faso, Mali, Mauritanie, Niger, Nigéria, Sénégal

    Desertification is defined as land degradation occurring in the global drylands. It is one of the global problems targeted under the Sustainable Development Goals (SDG 15). The aim of this article is to review the history of desertification and to evaluate the scientific evidence for desertification spread and severity. First quantitative estimates of the global extent and severity of desertification were dramatic and resulted in the establishment of the UN Convention to Combat Desertification (UNCCD) in 1994. UNCCD’s task is to mitigate the negative impacts of desertification in drylands.

  4. Library Resource
    Publication évaluée par des pairs
    octobre, 2013
    Algérie, Soudan, Burkina Faso, Nigéria, Mauritanie, Tchad, Mali, Cameroun, Sénégal, République centrafricaine, Soudan du Sud, Éthiopie, Niger, Érythrée

    The paper analyzes land use changes, notably cropland expansion, in SE-Niger from the mid-1980s to 2011. It scrutinizes land use trajectories and investigates how cultivation shifts between dune landscapes and valleys (bas-fonds) in response to climate, population pressure, and sociocultural opportunities, combining lenses rooted in land change science and the notions of double exposure and human-environmental timelines. Specifically, the interest is directed towards exploring the value of different methods of land use data harvesting.

  5. Library Resource
    Publication évaluée par des pairs
    octobre, 2014
    Algérie, Soudan, Burkina Faso, Nigéria, Mauritanie, Tchad, Mali, Cameroun, Sénégal, République centrafricaine, Soudan du Sud, Éthiopie, Niger, Érythrée

    The Sahel has been the focus of scientific interest in environmental-human dynamics and interactions. The objective of the present study is to contribute to the recent debate on the re-greening of Sahel. The paper examines the dynamics of barren land in the Sahel of Burkina Faso through analysis of remotely-sensed and rainfall data from 1975–2011. Discussions with farmers and land management staff have helped to understand the anthropogenic efforts toward soil restoration to enable the subsistence farming agriculture.

  6. Library Resource
    Publication évaluée par des pairs
    octobre, 2014
    Algérie, Soudan, Burkina Faso, Nigéria, Mauritanie, Tchad, Mali, Cameroun, Soudan du Sud, République centrafricaine, Sénégal, Éthiopie, Niger, Érythrée

    Climatic stress and anthropogenic disturbances have caused significant environmental changes in the Sahel. In this context, the importance of soil is often underrepresented. Thus, we analyze and discuss the interdependency of soil and vegetation by classifying soil types and its woody cover for a region in the Senegalese Ferlo. Clustering of 28 soil parameters led to four soil types which correspond with local Wolof denotations: Dek, Bowel, Dior and Bardial.

  7. Library Resource
    Publication évaluée par des pairs
    décembre, 2014
    Algérie, Soudan, Burkina Faso, Nigéria, Mauritanie, Tchad, Mali, Cameroun, Sénégal, République centrafricaine, Soudan du Sud, Éthiopie, Niger, Érythrée, Afrique

    Crown diameter and tree density were measured in 52 communities in the Sudan-Sahel using satellite imagery to determine the relationships between rainfall and distance from community center to crown size diameter and tree density. As distance from the community center increased, tree density and crown diameter decreased. As rainfall increased, tree density decreased while crown diameter increased. Distance from the community center is a proxy for age since urbanization and our results indicate that older parts of communities show longer and more consistent tree management.

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