Comme la Préface l’a souhaité, ce document est conçu comme un plaidoyer. Son objectif, en effet, est de montrer pourquoi il faut aujourd’hui replacer la Convention de Lutte contre la Désertification au cœur des stratégies engagées pour affronter la crise montante de l’écosystème global. Son point de départ est un constat sans appel : la progression de la désertification et de la dégradation des terres et des eaux conduisent inéluctablement à un développement non durable (Chapitre I).

Desertification is defined as land degradation in arid, semi-arid and dry sub-humid areas, resulting from various factors, including climatic variations and human activities. More than one third of the surface of the earth consists of drylands. In terms of population, one out of every five people of the world live in already degraded or desertification-prone drylands. These people include many of the world’s poorest, most marginalized, and politically weak citizens. For instance, nearly 325 million people in the African continent live in drylands.

Avant-propos La notion de désertification se définit comme une dégradation des sols en zone aride, semi-aride et subhumide sèche, souvent appelée simplement « zone aride ». On estime qu’elle résulte d’une combinaison de facteurs, parmi lesquels les changements climatiques et l’activité humaine. Plus d’un tiers de la superficie totale de la terre est considéré comme zone aride. En termes démographiques, c’est un cinquième de la population totale du globe qui vit en zone aride déjà dégradée ou menacée de désertification.

A summary of the findings of a study of land degradation assessment (LADA) with remote sensing (RS) and geographic information systems (GIS), and its implications for sustainable land management (SLM) in Kenya is presented. The assessment was conducted over a 6-month period in July-December 2015. The need for the LADA is in line with the Kenya Government’s strong interest in moving towards a country programmatic approach, for sustainable land management (SLM).

This literature review explores how political, economic and resource management policies and programs can reduce forest degradation and increase the contribution of forest goods and services to sustainable livelihood strategies. In Ethiopia, studies indicate that forest dependency is strong throughout the country, but the importance of forest income varies across different regions and wealth categories. Research suggests that improving forest product market governance is key to strengthening forest livelihood resiliency.

Tanzania and Mozambique — countries of vast mountain ranges and open stretches of plateaus — now face a growing land problem. As soil degradation, climate change and population growth place enormous strains on the natural resources that sustain millions of people, multinational companies are also gunning for large swaths of land across both countries. Caught between these pressures, many poor, rural communities get displaced or decide to sell their collectively held land.

Includes land alienation in the case study sites; impacts of land alienation; coping strategies; conclusions and policy recommendations. Found that livestock numbers are declining dramatically in the area, land degradation is increasing, people are becoming more vulnerable to drought and famine, and resource-based conflicts are increasing in severity. The traditional pastoralist way of life is increasingly making way for sedentary farming and enclosed private grazing land.

With the establishment of the UN Sustainable Development Goals (SDGs) in 2015, the Human Development Forum at Tudor Rose has expanded its publishing operation with the creation of a series of volumes entitled A Better World, each dedicated to one or more of the 17 SDGs. This volume, published in September 2018, covers Goal 15: Life on Land, and particularly Goal 15.3, which aims to achieve Land Degradation Neutrality
(LDN) globally by 2030.

En Aisén, Chile, se compararon distintos estadios de degradación antropogénica de la vegetación arbustiva original en una serie de distintos manejos de pastoreo, utilizando los indicadores ecológicos vegetales de Ellenberg para los factores de luz, temperatura del aire y de reacción, nitrógeno y humedad del suelo. El matorral de ñirre primario se consideró como inicio de la serie. Se trabajó con tablas de vegetación separadas para cada estado de degradación.

Esta investigación analiza mediante la metodología Delphi varios indicadores de calidad del suelo del olivar español, en particular, la textura, la fertilidad, el color, la profundidad, la compactación, la aireación, la materia orgánica y la infiltración del agua. El objetivo consiste en describir la percepción de los olivicultores acerca del grado de erosión en la zona de estudio, teniendo en cuenta su propia autovaloración referida a su nivel de adopción de innovaciones y a su actitud frente al riesgo de aplicar nuevas tecnologías.

Los objetivos de este trabajo están fundamentados en la necesidad prioritaria que tiene nuestro planeta y por ende nuestro país, de no seguir siendo devastados por las emisiones mundiales responsables del cambio climático, mismas que amenazan la vida del ser humano y de los miles de ecosistemas que lo componen.