Soil/Phytofisionomy Relationship in Southeast of Chapada Diamantina, Bahia, Brazil
This study aims to characterize the physicochemical aspects of the soils of southeastern Chapada Diamantina - Bahia related to the phytophysiognomies of this area, rupestrian field, small savanna (savanna fields), small dense savanna (savanna fields), savanna (Cerrado), dry thorny forest (Caatinga), dry thorny forest/savanna, scrub (Carrasco - ecotone), forest island (seasonal semi-deciduous forest - Capão) and seasonal semi-deciduous forest. To achieve the research objective, soil samples were collected in each plant formation and analyzed in the soil laboratory of ESALQ - USP in order to identify soil fertility through the determination of pH, organic matter, phosphorus, potassium, calcium, magnesium, potential acidity, sum of bases, cation exchange capacity and base saturation. The composition of soil particles was also checked; that is, the texture, step made in the terrestrial ecosystems laboratory of the Department of Ecology of USP and in the soil laboratory of ESALQ. Another important factor also studied was to show the variations in the vegetation cover in the region as a function of soil moisture in the different existing physiographic environments. Another study carried out was a comparison between the average soil moisture data with precipitation data from three locations with very different phytophysiognomies. The soils found in this part of Bahia can be classified into 5 classes, with a predominance of oxisols. All of these classes have a great diversity of physical and chemical properties, as can be seen in photographs and in particle size and fertility analyzes. The deepest soils are located in the Central Pediplano of Chapada Diamantina where the dirty field, the clean field, the executioner and the semideciduous seasonal forest (Capão) are located, and the shallower soils were found in the rupestrian field, dry thorny forest, and savanna fields, the latter located on a hillside. As for the variations in water in the region's soil, the data indicate that there were large spatial variations in humidity in both the rainy and dry periods.Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 434
 Furley, P. A. The nature and diversity of neotropical savanna vegetation with particular reference to the Brasilian cerrados. Blackwell Science Ltd. Global Ecolgy and Biogeography, 1999. p. 223-241.
 Goudsmith, F. B.; Harrisson, C. M. Descrition and analysis of vegetation. In: Methods in plant ecology. London: Blackwell Scientific Publications, 1976. p. 85-152.
 Grillo, A. A. S. Aspectos pedológicos, ecológicos e florísticos de uma área de cerrado no município de Palmeiras, Chapada Diamantina – BA. São Paulo, USP. 225 p. Dissertação (Mestrado em Botânica), 2000.
 Malavolta, E. ABC da análise de solos e folhas: amostragem, interpretação e sugestões de adubação. São Paulo: Agronômica Ceres, 1992. 124 p.
 Misi & Silva. Chapada Diamantina Oriental – BA: geologia e depósitos minerais. Salvador: SGM, 1996. 194 p.
 Mueller-Dombois, D.; Ellenberg, H. Aims and methods of vegetation ecology. Wiley International Edition, 1974. 574 p.
 Nobrega, M. A. Diversidade de Fitofisionomias e Aspectos Fisiográficos no Sudeste da Chapada Diamantina. São Paulo, USP, 2003. 138p.
 Palmieri, F.; Larach, J. O. I. Pedologia e Geomorfologia. In: Geomorfologia e meio ambiente. Rio de Janeiro: Bertrand Brasil, 1995. p. 59-122.
 Silva, G. B.; Santos, J. H. G.; Corrêa, P. R. S. Pedologia. In: Brasil, P. Radambrasil. Folha SD 24 Salvador. Rio de Janeiro: Min. Minas e Energia, 1981. p. 277-391.
 Stevens, G. C. The elevational gradient in altitudinal range: an extension of rapoport´s latitudinal rule to altitude. Am. Nat, 1992. 140 (6): 893-911.