As abordagens sistêmica e do equilíbrio dinâmico na análise da fragilidade ambiental do litoral do Estado de São Paulo: contribuição à geomorfologia das planícies costeiras / Systemic approaches and the dynamic equilibrium in the analysis of environmental fragility of the coast of the state of S Paulo: contribution of geomorphology of coastal plains

AUTOR(ES)

Marisa de Souto Matos Fierz

DATA DE PUBLICAÇÃO

2008

RESUMO

The principal aim of this research, based on the Systems Approach and on the Dynamic Equilibrium, is to evaluate geological and geomorphologic different configurations and environmental fragility on the several geomorphologic topographic features in the coastal plains of Fortaleza bay in Ubatuba, located in the north coast of São Paulo and Peruíbe-Itanhaém area, located in center-southern coast of the São Paulo State.These morphological configurations differences are result of the geologic past processes and the geologic structure that sustain the stamped landscapes forms by active processes that behave as modeling agents and of maintenance of the dynamic equilibrium of this forms.The dynamic equilibrium by ecogeography principles of Tricart (1977) is maintained by the vegetal cover that prolong constant the process of morphogenesis and pedogenesis for all coastal plain that is mainly formed by material, thin to very thin sand particles that gives the region character of intensive fragility.The dynamic equilibrium on the geomorphologic models of Hack (1960, 1965) is maintained by the materials resistance variation that composes the reliefs forms. These both examples help in the determination of the environmental fragility that is identified and represented, mainly by the variations of the resistance among the various compartments geomorphologic or subsystems mapped throughout coastal plain. In some parts of the coastal plain, mainly in the south shore, where the kind of soil is Espodossoil presents level B espodic, also denominated as fragipã (?), which the principal characteristic is present by the character hardened by the composition of the humic and fulvic acids, retained there by the podzolization process. In these places the resistance tests resulted in few or null impacts penetration. The hardened level B espodic, regardless classification of the environmental fragility, showed direct interferences in the process of the changes on the topographic levels.

ASSUNTO(S)

geomorphology - coast of são paulo planície costeira - peruíbe - itanhaém - ubatuba geomorfologia - litoral paulista coastal plain - peruíbe - itanhaém - ubatuba fragilidade ambiental environmental fragility

Documentos Relacionados

• Geomorfologia dos maciÃos costeiros de Caucaia-CearÃ
• Subsidies towards the management of the northern coast of São Paulo State: a case study of the larval settlement success of coastal decapods.
• As rochas alcalinas de Cananéia, litoral sul do Estado de São Paulo: estudos mineralógicos, geoquímicos e isotópicos
• Ilhas do litoral norte do estado de São Paulo: paisagem e conservação
• Mitilicultura do litoral norte de São Paulo : uma alternativa à atividade pesqueira tradicional