Climate and environmental changes since the Last Glacial Maximum in the tropical zone of West Africa are usually inferred from marine and continental records. In this study, the potential of carbonate pedo-sedimentary geosystems, i.e. Vertisol relics, to record paleoenvironmental changes in the southwestern part of Chad Basin are investigated. A mu...
Climate and environmental changes since the Last Glacial Maximum in the tropical zone of West Africa are usually inferred from marine and continental records. In this study, the potential of carbonate pedo-sedimentary geosystems, i.e. Vertisol relics, to record paleoenvironmental changes in the southwestern part of Chad Basin are investigated. A mu...
Many Vertisols of the world tend to alter into Luvisols and various processes have been invoked to explain this transformation. We have studied a Luvisol (Hypereutric Chromic)/ Vertisol (Humic) catena in the Indian Karnataka Plateau that has developed on complex metamorphic rock under semi-arid conditions. Although the catena differentiation is maj...
Nitrogen (N) transfer from leguminous trees can be a major N source for the associated crop in low-input agroforestry systems. The aim of this study was to identify the main climatic and soil factors controlling N transfer from the leguminous tree Gliricidia sepium (Jacq.) Walp to the associated grass Dichanthium aristatum (Poir.) C.E. Hubb, in a 1...
Ce rapport est relatif à la mise en place d'une expérimentation, consacrée à l'étude des mécanismes physico-chimiques (adsorption et transport de l'eau et des éléments nutritifs) sur quatre sols tropicaux dont un est un sol remanié par des vers de terre. Cette étude des différents types de sols a pour finalité d'adapter les apports d'intrants sur l...
Titre du périodique-hôte : Les stocks de carbone dans les sols des Antilles. Importance agronomique et environnementale / International audience
