Dinâmica da Paisagem da Bacia do Rio Capim-Pa (The Capim-Pa River Basin Landscape Dynamics)
DOI:
https://doi.org/10.26848/rbgf.v5i1.232779Keywords:
rio Capim, paisagem, geomorfologiaAbstract
Este trabalho descreve os componentes e a dinâmica da paisagem da bacia do rio Capim no Estado do Pará, com o objetivo de identificar quais são seus sistemas mais relevantes. A metodologia adotada constou basicamente do estudo das variáveis relativas à: geologia, hidrogeologia, geomorfologia, solos, clima e cobertura vegetal; empregando a cartografia existente, técnicas de geoprocessamento, de sensoriamento remoto e levantamentos de campo. Os resultados obtidos mostram que a bacia do rio Capim pode ser subdividida em dois Sistemas de Terreno (Alto rio Capim e o Baixo-Médio rio Capim) e seis Unidades de Terreno (Palheta - Jari, Cajueiro - Pirajorara, Candiru - Açu, Carataua - Açu, Jamanxim - Itaquiteua Grande e Ararandeua - Surubiju). Caracteriza-se por ser uma bacia de sexta ordem, de comportamento variável, associado às variações geológicas e de retrabalhamento superficial condicionado pelos processos fluviais. Estes últimos tornam as unidades Ararandeua- Surubiju e Candiru-Açu as de dinâmica mais ativa e cujo comportamento pode implicar em mudanças no conjunto da bacia.
Palavras chaves: rio Capim, paisagem, geomorfologia.
The Capim-PA River Basin Landscape Dynamics
ABSTRACT
This work describes the components and the landscape dynamics of the Capim river basin in Para State. The main purpose is to identify the most principals systems to the basin. In the methodology was used as variables: geology, hydrogeology, geomorphology, soils, climate and vegetal covering; the cartography existing, geoprocessing and remote sensing techniques and field surveys. The gotten results show that: the Capim river basin can be subdivided in two terrain systems (High Capim river and Low-Medium Capim river) and six terrain units (Palheta - Jari, Cajueiro - Pirajorara, Candiru - Açu, Carataua - Açu, Jamanxim - Itaquiteua Grande and Ararandeua - Surubiju). It´s characterized by a sixth order basin with changeable behavior, associate to geological variations and fluvial processes modeling. The units Ararandeua- Surubiju and Candiru-Açu showed the more active dynamics and whose behavior can imply in stronger basin changes.
Key words: Capim river, landscape, geomorphology.
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Copyright (c) 2012 Aline Maria Meiguins de Lima, Marcos Ximenes Ponte
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