La thèse présentée porte sur l’étude de la dynamique de la désertification dans deux communes steppiques (El-Gueddid et Zaafrane, Wilaya de Djelfa, Algérie) fortement exposées à ce phénomène, malgré l’intervention de l’État depuis des décennies via les programmes de développement de la steppe qui visent à renforcer la capacité des ménages à gérer l...
La thèse présentée porte sur l’étude de la dynamique de la désertification dans deux communes steppiques (El-Gueddid et Zaafrane, Wilaya de Djelfa, Algérie) fortement exposées à ce phénomène, malgré l’intervention de l’État depuis des décennies via les programmes de développement de la steppe qui visent à renforcer la capacité des ménages à gérer l...
Martínez Palacios, A.Prat, ChristianRíos Patrón, E.
In Mexico, 45 percent of the country suffers from land degradation, 12 percent of which, or some 23 million ha, are degraded due to water erosion. In Michoacán, a state in west-central Mexico, the figure rises to 27 percent. A study of the soil in Michoacán determined that overgrazing was a cause of degradation and a strategy was drawn up to promot...
Woody plant encroachment in grasslands is a worldwide phenomenon. Despite many studies, the consequences of woody plant encroachment on sub-canopy vegetation and soil properties are still unclear. To better understand the impacts of trees on grassland properties we examined the following questions using a mountainous sub-tropical grassland of South...
Woody plant encroachment in grasslands is a worldwide phenomenon. Despite many studies, the consequences of woody plant encroachment on sub-canopy vegetation and soil properties are still unclear. To better understand the impacts of trees on grassland properties we examined the following questions using a mountainous sub-tropical grassland of South...
Woody plant encroachment in grasslands is a worldwide phenomenon. Despite many studies, the consequences of woody plant encroachment on sub-canopy vegetation and soil properties are still unclear. To better understand the impacts of trees on grassland properties we examined the following questions using a mountainous sub-tropical grassland of South...