Methodological contribution to the diagnosis of linear erosive dynamics and its evolutionary prognosis in order to support recovery projects

Author(s)

Dener Toledo Mathias

• Document type: Doctoral Thesis
• Press: Presidente Prudente. 2016-04-01.
• Institution: Universidade Estadual Paulista (Unesp). Faculdade de Ciências e Tecnologia. Presidente Prudente
• Defense date: 2016-02-15
• Advisor: João Osvaldo Rodrigues Nunes

Abstract

The occurrence of linear erosion in headwaters in contact with urban areas is a phenomenon that result in negative impacts on the physical environment and provide a population to risk, requires the adoption of mitigation actions. This areas exhibit a complex geomorphological dynamic process marked by interaction between erosive features and technogenic morphologies. Therefore, this work presents a methodological contribution applicable to the study of erosion in periurban areas, aiming at the current diagnosis, and identification of evolutionary trends. It was chosen as a case study a sector in the urban periphery of São Pedro (SP) delimited by the upper basin of the Tucum stream, area characterized by containing linear erosive forms and landscape marked by intense interventions. The research is based on General Systems Theory applied to Geography and the techniques employed was the quantification of hydrogeomorphological and tecnogenic variables. The data were obtained experimentally in the field and subjected to treatment in a GIS environment, allowing an integrated analysis of physical attributes. The results support that specific experimental techniques within the geomorphology can be applied in the context of anthropically disturbed areas, providing understanding of the dynamic of process. The diagnosis generated shows that the processes in the area are active and prognosis indicates sectors most prone to the erosion linear advancement, contributing with subsidies to recovery projects. (AU)

• FAPESP's process: 12/03745-4 - Methodological proposal for the diagnosis of linear erosive dynamic in peri-urban areas aiming subsidize recovery projects
• Grantee: Dener Toledo Mathias
• Support Opportunities: Scholarships in Brazil - Doctorate