About the publication - 2019
A serious concern and the follow-up of the urban phenomenon are key elements to understand the society and the Brazilian territory over time. Among several forms of approaching the urban theme and the resulting spatial patterns, monitoring urbanized areas is one of the most important, since it reveals how much of the landscape remains or is transformed into patterns that highlight the lived space expressed in typical spatial forms of the urban phenomenon, developed under the criteria of building and distribution that allow daily neighborhood relations and that the relationship of people living there characterizes such a way of life.
With the release of this edition of the mapping of urbanized areas, reference year of 2019, the IBGE introduces significant methodological and editorial changes for the dissemination of such results in relation to the previous one, related to 2015.
Concerning the methodological changes, those resulting from the availability of images from the Sentinel-2/MSI satellite stand out, with a spatial resolution of 10 m as basic input for the same year in the entire country, as well as the inclusion of areas of empty allotments, though not considered urbanized areas in the current conception, since they do not have the elements of occupation, neighborhood and circulation required to configure an urban way of life, they represent an anthropic intervention that points to a growth trend of the urban form, important to be monitored in the long term.
In editorial terms, some improvements aimed at the appeal of the product, whose release is now made in two parts: the first one corresponds to a newsletter, also available in printed media, showing analytical commentaries about the major results of the reference year, illustrated with cartograms, tables and graphs, whereas the second part, published apart and only accessible in digital media, brings technical notes that provide a comprehensive methodological scenario of the study, with information about the major operational procedures adopted.
It should be highlighted that the complete results of this mapping remain in line with the so-called “urban agenda”, which is a whole set of concerns and demands for planning headed by the United Nations and that guided the previous edition as well. They are available on the IBGE Portal, on the page of the Urbanized Areas study, as well as on the Interactive Geographic Platform (PGI), also accessible in this channel. The geospatial database of this mapping, in vector format, can also be consulted in association with the other themes of the Environmental Information Database (BDiA). It is also possible to build tables for different geographic divisions on the IBGE System of Automatic Recovery (Sidra), according to the perspective of interest of users.
Information about the previous edition, whose comparability with the current data requires specific procedures and caveats, can be obtained in the Urbanized areas of Brazil 2015 publication, released in the Methodological Reports Series, also available on the portal, which encompasses the complete results of all editions of the mapping since 2005.
FAQ
What are Urbanized Areas?
The Brazilian Urbanized Areas result from the mapping of the urban spots of the Brazilian cities and aims at monitoring the urbanization steps in the Brazilian territory.
Which are the differences between the 2005 and 2015 mapping?
The differences regard methodologies and inputs, besides the different set of municipalities involved. The 2005 Urbanized Areas, for example, were based on the CBERS-2B satellite images scaled 1:100,000, while the 2015 Urbanized Areas were based on RapidEye satellite images with spatial resolution of 5 meters on a sacle of 1:50,000 or less.
What period do the images cover?
The images used as basis for the 2005 Urbanized Areas mapping cover the years 2005 and 2007. Regarding the 2015 Urbanized Areas, the satellite images cover the period from 2011 to 2014.
Still in doubt?
Please contact us at ibge@ibge.gov.br or at 0800 721 8181.
