ABSTRACT Most studies regarding the impacts of agricultural systems on soils of the Amazon region of Brazil have been carried out on upland soil, locally known as terra firme. Information regarding the impacts of different land-use systems on floodplain soil properties is still scarce. There is a need to broaden this knowledge to understand this Amazonian ecosystem better, especially how its soils respond to human interventions. This study aimed to describe the major chemical features of floodplain soils along the […]

Archeological sites are frequent in the Brazilian Amazon. The physical, chemical and morphological properties, due to anthropic influence, are quite different from surrounding soils, mainly in the uplands. Although several studies have been carried out to understand the magnitude of these modifications and their influence on the genesis of such soils, aspects such as the mineralogical properties need to be better described. This study aimed at evaluating the chemical and mineralogical properties of anthropic horizons (Au) of soils of upland […]