Impactos da mineração de areia em planícies fluviais meândricas da bacia hidrográfica do Alto Tietê: o caso do rio Embu Guaçu, São Paulo - SP / The geomorphological knowledge about physical meandering systems and pursuits the understanding of the anthropic activities effects on the Alto Tietê: the case of the Embu-Guaçu river, in the southern sectin Sao Paulo county

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This study presents the geomorphological knowledge about physical meandering systems and pursuits the understanding of the anthropic activities effects on these physical systems, so characterizing one of the main principles of a anthropogeomorphology and anthropogenic geomorphology. The main purpose of this research was the qualitative and quantitative analysis of the modifications performed by sand mining activities in a fluvial compartment of the meandering floodplain of the Embu-Guaçu river, in the southern sectin Sao Paulo county. This study was performed with the application of evolutionary geomorphological cartography mapping as analytical tool for the physical system conditions in a preintervention situation and after 22 year of sand extraction (state during intervention). Two detailed geomorphological maps were produced: one refers to 1981 and presents the original morphology and the other to 2003 including the anthropogenic morphology. The selection and representation of forms, materials and processes included in geomorphological maps as well as the comparative analysis were based upon a series of geoindicators considered as qualitative and quantitative interpretation parameters.

ASSUNTO(S)

mapeamento geomorfológico sand mining embu-guaçu river geoindicadores anthropogeomorphology geomorphological mapping rio embu-guaçu antropogeomorfologia mineração de areia geoindicators

ACESSO AO ARTIGO

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