Diagnóstico da informação espacial cadastral como etapa para integração de dados territoriais

Abstract

This study presents an assessment of the quality of spatial cadastral information for a pilot area in the municipality of Monte Carmelo, Minas Gerais, identifying structural aspects requiring improvement to support future territorial modernization and interoperability initiatives. The research is significant for investigating existing inconsistencies in a municipal cadastral map database to enhance the quality of information used by the Multipurpose Technical Cadastre (CTM). The methodology involved an analytical comparison between existing vector layers and field surveys conducted using an RTK GNSS receiver across four city blocks in the Cidade Jardim, with one specific block (Block N) selected for detailed measurements of parcel frontages. To validate the results, a structured technical assessment matrix was applied to evaluate data performance based on criteria such as metadata, positional accuracy, topological consistency, thematic completeness, currency, and regulatory compliance, drawing upon parameters from ISO 19157, ABNT NBR 17047, and ET-EDGV 3.0 standards. Using the DSGTools plugin in QGIS software, critical non-conformities were identified, including a systematic translation error toward the Northeast (NE) quadrant, perimeter gaps, dangling lines resulting from forced closure at building footprints, and cadastral voids due to omitted lots. As an improvement measure, the pilot area's attribute tables were experimentally restructured based on Department of Public Works records, and guidelines for vector editing were established. The results reveal limitations in the geometric, topological, and structural consistency of the data, creating risks of double taxation and legal uncertainty in fiscal and urban management. It is concluded that the qualification of local cadastral spatial information constitutes a fundamental step for strengthening the CTM and for preparing the municipal database for future integrations with conceptual models of territorial administration, such as the Land Administration Domain Model (LADM).