Table des matières
Quels sont les conséquences de la désertification?
Appauvrissement des sols ; Dégradation des écosystèmes et de la biodiversité ; Diminution de la capacité de stockage du carbone dans les sols et accentuation du réchauffement climatique ; Raréfaction des ressources et pénuries d’eau.
Quelles sont les causes de la désertification PDF?
Les principales causes de la dégradation des terres sont des politiques menant à une utilisation non durable des ressources et le manque d’infrastructures de soutien. Inversement, ceci souligne l’importance d’intervenir au niveau des politiques et des infrastructures publiques.
What factors can contribute to the process of desertification?
Desertification is caused by a combination of factors that change over time and vary by location. These include indirect factors such as population pressure, socioeconomic and policy factors, and international trade as well as direct factors such as land use patterns and practices and climate-related processes.
How can we prevent or reverse desertification?
Desertification is easier to slow down and prevent than it is to reverse. Some methods of reversal of desertification involve replanting of specific species and the establishment of seed banks to make sure that plants native to the region survive. In areas that have undergone massive deforestation,…
What are the impacts of desertification?
Impacts of Desertification. Desertification reduces soil fertility, particularly base cation content, organic matter content, pore space, and water-retention capacity. Desertification also reduces vegetative productivity, leading to long-term declines in agricultural yields, livestock yields, plant standing biomass, and plant biodiversity.
What are cons of desertification?
Vegetation is damaged or destroyed. Desertification reduces the ability of land to support plant life.