Geoecologia do baixo curso do rio Piancó-Piranhas-Açu

• Autor(a) principal: Oliveira, Alisson Medeiros de
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/handle/123456789/42827
• topic: Geoecologia; Geoecology; Geografia; Geography; Planície de inundação; Flood plain; Sistema rioplanície de inundação; River-floodplain system; Grande área: Ciências Exatas e da Terra / Área: Geociências / Subárea: Geografia Física.

Floodplains are ecologically fertile environments due to the high exchange of sediments and organic matter during and after the flooding of the river and other river channels and floodplain. The floodplains have ecological potential and biological exploitation of great value to man, which in turn uses and occupies these sedimentary features, not always responsibly. The occupation by the waters of the flood plain, even ephemeral or seasonal, may be as a problem of regional planning point of view to a country where land use planning was strongly influenced by water. In this context, the present study aimed to identify the land uses that are affected by the pulses of the Piranhas-Açu river floods in its low course (RN). The methodology of this monographic work was divided into three steps: 1) Consultation and bibliographic texts reviews, scientific articles, inventories and other manuscripts that address theoretical and applicable form the concepts that guided this research, in addition, it sought to compile information study area. 2) The second step is the assembly of a database combined with a Geographic Information System (GIS). 3) This last stage was all processing of data combined with GIS, this, thematic maps and tables were produced, which were analyzed and understood to arrive at concise results. The area of the river-floodplain of the Piranhas-Açu river system in its lower course, which also includes the same river flood plain is about 668.3 km2, and when there are events of flood pulses, the main activities economic are reached. This study sought to show that the studied stretch of the river-floodplain system suffers flood pulses, and the large pulses end up being harmful, as was the 2008. Was taken as the area of greatest proportion of the flood event occurred in 1985 because it was the largest ever recorded, however, the full 2008 proved to be a disaster because of the economic and social damage.