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Mostrando ítems 1 a 9 de 38.
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Library Resource
Publicación revisada por pares
Sahara Occidental, Madagascar, Camerún
Ce papier constitue une synthèse des acquis et des handicaps de la restauration des paysages forestiers et régimes fonciers au Cameroun. Il présente par ailleurs les engagements du Cameroun pour ralentir la déforestation et la dégradation de ses écosystèmes forestiers à travers la stratégie nationale de restauration des paysages forestiers, en lien avec les initiatives du Défi de Bonn, de l’AFR100 et de la Grande Muraille Verte.
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Library Resource
Publicación revisada por pares
The dramatic growth of the world’s population is increasing the pressure on natural resources, particularly on soil systems. At the same time, inappropriate agricultural practices are causing widespread soil degradation. Improved management of soil resources and identification of the potential agricultural capability of soils is therefore needed to prevent further land degradation, particularly in dryland areas such as Egypt. Here, we present a case study in the El-Fayoum depression (Northern Egypt) to model and map soil suitability for 12 typical Mediterranean crops.
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Library Resource
Publicación revisada por pares
Conversion of native lands into agricultural use, coupled with poor land management practices, generally leads to changes in soil properties. Understanding the undesirable effects of land-use and land-cover (LULC) changes on soil properties is essential when planning for sustainable land management.
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Library Resource
Publicación revisada por pares
Sudán, Estados Unidos de América, Afganistán, Etiopía, Bangladesh
Food aid is a critical component of the global food system, particularly when emergency situations arise. For the first time, we evaluate the water footprint of food aid. To do this, we draw on food aid data from theWorld Food Programme and virtual water content estimates from WaterStat. We find that the total water footprint of food aid was 10 km3 in 2005, which represents approximately 0.5% of the water footprint of food trade and 2.0% of the water footprint of land grabbing (i.e., water appropriation associated with large agricultural land deals).
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Library Resource
Publicación revisada por pares
Soil erosion is an important environmental problem that can have various negative consequences, such as land degradation, which affects sustainable development and agricultural production, especially in developing countries like Tunisia. Moreover, soil erosion is a major problem around the world because of its effects on soil fertility by nutriment loss and siltation in water bodies. Apart from this, soil erosion by water is the most serious type of land loss in several regions both locally and globally.
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Library Resource
Publicación revisada por pares
Soil erosion is an important environmental problem that can have various negative consequences, such as land degradation, which affects sustainable development and agricultural production, especially in developing countries like Tunisia. Moreover, soil erosion is a major problem around the world because of its effects on soil fertility by nutriment loss and siltation in water bodies. Apart from this, soil erosion by water is the most serious type of land loss in several regions both locally and globally.
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Library Resource
Publicación revisada por pares
This investigation aims to assess the changes of Land Use/Land Cover (LULC) and its impact on ecosystem services value in Damietta Governorate, Egypt. To fulfill this aim, Landsat data of TM5 in 2001, ETM in 2011 and OLI in 2021 were used. The Maximum Likelihood Classifier was employed to track the changes in LULC of the study area. Cellular automata (CA) and Markov model adopted from IDRISI software were used for accurate prediction of the LULC in 2031. The VALIDATE model in TerrSet was used to compare the predicted 2031 LULC with actual 2021 LULC to assess the accuracy of the model.
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Library Resource
Publicación revisada por pares
Informes e investigaciones
África, África septentrional, América Latina y el Caribe, Asia, Líbano, Francia, Oceanía
Dans les pays du Sud, l’accès à la terre et à ses ressources, son contrôle et ses usages représentent des questions cruciales. Au cœur des défis de la construction de l’État, du développement agricole, de la sécurité alimentaire et de la durabilité environnementale, le foncier est aussi un marqueur identitaire et une source récurrente de conflits.
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Library Resource
Publicación revisada por pares
Aujourd’hui, la périurbanisation est reconnue comme un phénomène mondial animée par différents déterminants (poussée démographique, développement industriel, crise de la ruralité, etc.). En effet, les territoires périurbains sont des espaces qui reçoivent l’excédent de la croissance démographique urbaine et qui accueillent les nouveaux projets d’aménagement et de développement (promotions immobilières, implantations de zones d’activités diverses, développement des réseaux de communication, maintien ou développement de certaines agricultures, etc.).
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Library Resource
Publicación revisada por pares
Natural rangelands occupy about 5.5 million hectares of Tunisia’s landmass, and 38% of this area is in Tataouine governorate. Although efforts towards natural restoration are increasing rapidly as a result of restoration projects, the area of degraded rangelands has continued to expand and the severity of desertification has continued to intensify. Any damage caused by disturbances, such as grazing and recurrent drought, may be masked by a return of favorable rainfall conditions.
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