Abstract
Urbanization in Brazil occurred in a disorganized way and without observing criteria that could ensure the sustainability of this process, resulting in high population concentrations in large urban centers. In this way, it is recognized the need for an adequate planning that contemplates the economic and social interests and respects the environmental demands. Thus, the present work aims to map the land use and occupancy, with an emphasis in an urban area, having as a case study the municipality of Novo Hamburgo, RS. The methodology is established in two levels of detailing of classes, in which supervised classification and manual vectorization were used, seeking a more accurate specification of the urban areas. Validation was established through two databases: Google Earth and Remotely Piloted Aircraft System (RPAS), using the confusion matrix and the Kappa index. The results show the efficiency of the hybrid method for high-resolution images, besides highlighting the existing anthropogenic differences in urban areas. In relation to the use of different databases for validation, close values are also perceived between the two processes, with a Kappa index of 0.928 for data obtained from Google Earth and 0.943 for the RPAS.
Highlights
The urbanization in Brazil occurred in a disorganized manner, resulting in high population concentrations in large urban centers and medium-sized municipalities, which contributed to the formation of the metropolitan regions in the country from the 1970s (Brito et al, 2001)
It is important to recognize the need for an adequate planning that addresses economic interests and respects environmental demands while, at the same time, comes to be able to diagnose the current situation of the territory and identify possible future problems, using these results in the construction of new guidelines of planning and management (Nascimento et al, 2009, Kribert et al, 2016)
This fact, associated to the shoe crisis that occurred in the 1990s in the municipality resulted in the formation of irregular occupations, as well as problems of infrastructure, around the main urban area are recurrent in the city, highlighting the need for strategies and planning guidelines
Summary
The urbanization in Brazil occurred in a disorganized manner, resulting in high population concentrations in large urban centers and medium-sized municipalities, which contributed to the formation of the metropolitan regions in the country from the 1970s (Brito et al, 2001). In the past two decades, different remote sensing bases became available, especially with the advent of orbital sensors of high temporal resolution, which made it possible to expand the analysis scale (detailing) in urban areas, improving the techniques of mapping the land use and occupancy. Most of this information is still related to low and medium resolution images, which guarantee adequate analyzes at global and regional level, but are inefficient for local planning (Lu & Went, 2007; Rozon et al, 2015 Almeida et al, 2016)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
