POSTER SESSION A: Ar Hi De Ub Cr

Features of the irregular occupation process in Pituaçu Metropolitan Park, Salvador, Bahia, Brazil

Monday, July 3
2:30 PM - 5:30 PM
Location: Exhibit Hall C

It is remarkable the lack of green areas that provide greater thermal comfort, better air quality and also serve as recreational areas for the population in urban centers. However, urban expansion and real estate pressure in Salvador, the state capital of Bahia, Brazil, are removing the few Atlantic Forest remnants at the expense of development. Most often, these areas are occupied by poor people to build homes does not have a structure of street lighting, drinking water supply and adequate sanitation, resulting in environmental degradation. In this context, Cartography and Remote Sensing tools can be used to map, analyze and understand the process of urban expansion in the areas of environmental preservation. The aim of this study is to analyze the characteristics of the illegal occupation process in Pituaçu Metropolitan Park – a full protection unit in the city of Salvador, state of Bahia, Brazil - taking into account the dynamics of this occupation and the changing of the boundaries of the park in the context of this disorderly occupation. The park was originally created on September 4, 1973 through the State Decree No. 23666, with an area of approximately 660 hectares. In 2006, by Decree No. 10,182, the State Government changed the limits of Pituaçu Metropolitan Park, taking into account the classification of Pituacu Metropolitan Park as an urban park according to the Director Plan of Urban Development (PDDU) of Salvador, setting a polygon with an approximate area of 378.03 hectares, which represents a significant loss compared to the original area. The last change in the boundaries of the Pituaçu Metropolitan Park occurred through the State Decree No. 14,480, of May 16, 2013, which redefined an area of 392.02 hectares. The present study was conducted by comparing the park boundaries set out in its founding in 1973 and the changes made in 2006 and 2013, evaluating how these changes in the limits relate to the urban settlement in the conservation unit neighborhood. To support the analysis, the limits of the Pituaçu Metropolitan Park provided by INEMA (Institute of Environment and Water Resources, the body responsible for the administration of the park) in shapefile format were used together with satellite images available in the OpenLayers plugin of the Geographic Information System QGIS to analyze the polygons that represent the areas occupied illegally inside the park. The result obtained by overlaying this information showed a direct relationship between the change of the boundaries of the park and the advancement of illegally occupied areas, particularly in regions with poor population. However also occupations of areas by luxury homes were identified, showing that there is a portion of high purchasing power population that keeps their properties illegally in the conservation unit. The comparison between the areas 1973 and 2013 demonstrated that in 40 years the Pituaçu Metropolitan lost about 50% of its original area, highlighting the need for urgent action to ensure the preservation of what remains of the existing biodiversity in the region and to stop that urban expansion in this location.

Pablo A. Cruz

Student
Universidade Federal da Bahia

Pablo Henrique Alves Cruz, Land Survey and Cartography Engineering Student at Federal University of Bahia, Intern at City Hall of Salvador working on the supervision of products from aerophotogrammetry and laser scanning, former director project at Datum Engenharia Junior (Engineering Junior Company at Escola Politécnida da Universidade Federal da Bahia).

Presentation(s):

Send Email for Pablo Cruz

Michael Heimer

Professor
Universidade Federal da Bahia

Bachelor degree in Geology from the Federal University of Bahia (1995), bachelor degree in Physics from the Federal University of Bahia (2003), master's degree in Geophysics from the Federal University of Para (2001) and PhD in Geophysics from the Federal University of Bahia (2010). My research is mainly in numerical modeling and inversion of geophysical data, having worked mainly with magnetotelluric, electrical resistivity and GPR methods. Today I am professor of the Departamento de Engenharia de Transportes e Geodésia of the Federal University of Bahia, where I am giving lectures in Physical Geodesy, Geoprocessing and Geostatistics.

Presentation(s):

Send Email for Michael Heimer


Assets

Features of the irregular occupation process in Pituaçu Metropolitan Park, Salvador, Bahia, Brazil



Attendees who have favorited this

Please enter your access key

The asset you are trying to access is locked. Please enter your access key to unlock.

Send Email for Features of the irregular occupation process in Pituaçu Metropolitan Park, Salvador, Bahia, Brazil