Indicadores para monitoramento de processos morfodinâmicos: aplicação na bacia do Ribeirão Pirajussara (SP) / Indicators for monitoring of morphodynamic processes: aplication in the Pirajuçara Watershed (SP)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Geoindicators are measures of magnitude and frequency of surface geomorphological processes that vary significantly over a period of less than 100 years and are used in environmental monitoring assessment. Geoindicators have been adopted in this research in order to select and systematize the morphodynamic processes and anthropogenic action (land use occupation) in the Pirajuçara Watershed which drains an area of 73 km2, and includes parts of São Paulo, Taboão da Serra and Embu cities, in São Paulo Metropolitan Region (RMSP). The reason for selecting this watershed was the presence of significant erosion areas and the historical records of floods. The indicators have been applied in three scales of analysis: Pirajuçara watershed (1:50.000), Poá watershed - the main subwatershed of Pirajuçara (1:25.000) and two subwatersheds of first order of Poá (1:5.000). This research presents 21 indicators in four classes: equilibrium state; anthropogenic action; hillslope dynamic and fluvial dynamic, and describes for each indicator its characteristics. This proposal may be used to support the elaboration of monitoring plans to prevent and control the morphodynamic processes for watersheds in urban and/or rural areas.

ASSUNTO(S)

(geo) indicators monitoramento pirajuçara. pirajuçara watershed bacia hidrográfica morphodynamic processes monitoring processos morfodinâmicos (geo) indicadores

ACESSO AO ARTIGO

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