2 results

Genesis and classification of Oxisols in a highland toposequence of the upper Jequitinhonha Valley (MG)

Celmo Aparecido Ferreira, Alexandre Christófaro Silva, Pablo Vidal Torrado, Welington Willian Rocha

01/Feb/2010

The Brazilian System of Soil Classification (SiBCS) is a taxonomic system, open and in permanent construction, as new knowledge on Brazilian soils is obtained. The objective of this study was to characterize the chemical, physical, morphological, micro-morphological and mineralogical properties of four pedons of Oxisols in a highland toposequence in the upper Jequitinhonha Valley, emphasizing aspects of their genesis, classification and landscape development. The pedons occupy the following slope positions: summit – Red Oxisol (LV), mid slope (upper third) – […]

Spatial variability of soil physical attributes used for soil mapping in small headwater catchments of the southern Amazon

João Paulo Novaes Filho, Eduardo Guimarães Couto, Virlei Alvaro de Oliveira, Mark S. Johnson, Johannes Lehmann, Susan S. Riha

01/Feb/2007

The northwestern region of Mato Grosso State consists of complex landscapes due to ongoing geomorphologic activity that contributes to the occurrence of different soil classes over small distances, which complicates soil sampling strategies. This study was conducted in Juruena (MT), with the objective of identifying pedologic classes in undisturbed forested headwater catchments by examining the spatial variability of soil texture and color, and taking elevation and topographic position into consideration. The spatial variability of soil texture and color were determined […]