Progressive Mapping and Urban Growth: The Construction of Urbanization Suitability Map of Pelotas-Southern Brazil

S.C. Xavier, L.A. Bressani

Article

Soils and Rocks, São Paulo, 42(2): 99-116, May-August, 2019 | PDF


Abstract

Significant portions of Brazilian city populations are subjected to an imbalance of environmental systems and geological and geotechnical risks. Such factors can only be properly addressed through planning and actions that take into account both the potential and limitations of the physical environment to urban land use. In this sense, geotechnical mapping plays a vital role in confronting problems that are inherent to any land affected by human activity, since, at its core, involves the study of mapping methods and processes which focus on the urban environment. Geotechnical mapping allows for the production of information for management planning and sustainable growth of the city. This work describes the structure and application of a geotechnical mapping methodology that incorporates both the study of urban growth and progressive mapping techniques. Based on the use of pre-existing information, this methodology was applied to the city of Pelotas in Southern Brazil, generating information regarding the physical environment of the city. Such information was fundamental for the planning and the control of occupation and land use, as well as for the development of susceptibility mapping for geodynamic processes (floods and erosion), which served as the basis for the development of urbanization suitability map of the urban voids of the city.


Submitted on January 16, 2018; Final Acceptance on July 8, 2019; Discussion open until December 31, 2019. DOI: 10.28927/SR.422099