Sobre els trets distintius dels sòls mediterranis
- Vallejo Calzada, Victoriano Ramón
- Cortina Segarra, Jordi
- Ferran i Cabeza, Anna
- Fons Esteve, Jaume
- Romanyà i Socoró, Joan
- Serrasolsas i Domènech, Isabel
ISSN: 0210-7597, 2340-5023
Datum der Publikation: 1998
Nummer: 45
Seiten: 603-632
Art: Artikel
Andere Publikationen in: Acta botánica barcinonensia
Zusammenfassung
Soil fertility components in Mediterranean soils are reviewed to discuss their possible common general features and the oligotrophy often attributed to these soils. Mediterranean soils tipology and N and P cycling show some similar overall trends owing to the common climatic characteristics, but also considerable differences especially related to the parent bedrock. Differences often attributed to the soils from the five Mediterranean regions of the world can be mostly explained from the above mentioned factors. Soil organic matter and nitrogen cycling are especially active in the Mediterranean soils, in relation to the relatively high characteristic temperatures. P content and availability show considerable variation owing to differences in parent material and degree of soil weathering. Wildfires always produce nutrient losses to the ecosystem that could require long periods of time to recover. However, the enhanced fertility commonly produced just after the tire allows an efficient short -term regeneration of the vegetation. The human impacts on the ecosystems such as tires and cultivation/abandonment, that have been especially relevant in the Mediterranean Basin for centuries, can introduce strong soil degradation in fragile areas.