Aplicações de cadastro técnico multifinalitário urbano para planejamento e gestão do município de Demerval Lobão-PI

Abstract

Some concerns of human being is the representation your spaces, be for purpose territorial recognition or instructives purposes. In the course of time, these means of representation have been improving, reaching the present day, where there are several instruments, among them, Multifinalitarian Territorial Cadastre, which aims to represent everything that composes the municipal territory, covering its urban and rural areas. Albeit MTC is an instrument of paramount importance for territorial management and urban planning, many cities do not possess it, or when it has, is outdated or without the multifinalitarian aspect, possessing a fiscal and tax bias. View of the above, the objective was to generate a cartographic base for municipality Demerval Lobão – PI, constructed through data collected in the field and orthomosaic with resolution 45 centimeters referring to year 2016, addition to verifying the spatial-temporal dynamics urban area using images from the years 2009, 2015, 2017 e 2019, and entire territory of the municipality making use of orbital images of the years 1989, 1999, 2009 and 2018. For this, performed the application of georeferenced digital forms for the collection of real estate information, terrain and its owners, vectorization and supervised classification of orthophoto, obtained by airhoist, thus enabling the construction of cartographic base. In relation to the expansion of the urban area was performed the vectorization of the scenes of the satellite CBERS 2B and CBERS 4, while the mapping of land use and occupation for further analysis of transformations occurring in municipality was created by means of the supervised classification in the SPRING 5.3 software through the images of the Landsat 5, CBERS 2B and CBERS 4 satellites. Thus, generated the sectoral registers of edification, blocks, streets, green áreas and current use that gave rise to the cartographic base. Through vectorization it was possible to observe that urban stain expanded in 46.89% of initial área. The temporal analysis showed a significant reduction in vegetation and expansion of exposed soil areas and increased urban staining. Finally, the results obtained in this research may help in decision-making by the public administration.