TITLE:
Urban Settlement Spatial Analysis in Permanent Preservation Area of M’boicy Watershed River, Foz do Iguaçu City in Brazil
AUTHORS:
Luis Henrique Weiss de Carvalho, Sandro Laudares, Matheus Pereira Libório, Marianna Petrovna Ekel, Renato de Oliveira Marques
KEYWORDS:
Urban Settlement, Permanent Preservation Areas, Environmental Impact, Spatial Analysis, Geographical Information System
JOURNAL NAME:
International Journal of Geosciences,
Vol.7 No.10,
October
27,
2016
ABSTRACT: Irregular
urban settlement increases environmental impacts, especially when these occupations
occur in fragile location, as the environmental preservation areas. In these
areas, also defined as Permanent Preservation Area (PPA), the presence of
watersheds is common, which is the factor that increases the need of protecting them from anthropic actions.
Those actions deteriorate the environment and mainly the watercourses. This
research objective is to identify and estimate the environmental risks of
M’Boyci watershed River PPA occupied areas by urban population. The risk
analysis approach, at this PPA in Foz do Iguacu City in Brazil, is able to
support public interventions in order to reestablish the PPA natural
conditions. To reach this goal, it was necessary to use cartographical representation
images, generated from digital orthophotos analyzed through free geographical
information systems. The overlap and the contrast of geographical data related
to preservation in urban areas show that urban occupation reaches almost 40% of
the permanent preservation area. Complementarily, it is evidenced that the development of a risk map identifies PPA areas characterized by a greater concentration of irregular
settlement, contributing to the planning process of residents, relocation
actions and recovery of degraded areas.