Análise Espacial Integrada da Degradação da Terra no Submédio São Francisco, Brasil: Integrated Spatial Analysis of Land Degradation in Submedium São Francisco Basin, Brazil

• Autor(a) principal: das Neves Alves, Ana Catarina
• Data de Publicação: 2023
• Outros Autores: Barros, Jocilene Dantas, Arcoverde, Gustavo Felipe Balué, Ometto, Jean Pierre Henry Balbaud
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Revista de Geociências do Nordeste
• Texto Completo: https://periodicos.ufrn.br/revistadoregne/article/view/33877

The study analyzed land degradation in the Submedium São Francisco basin using indices according to the FPEIR model (Force-Pressure-State-Impact-Response). For the selection of the 17 indicators, a bibliographic review and correlation analysis were carried out, the indicators were generated in grids of 5 x 5 km in the GIS QGIS through secondary and primary data. Treatment was performed to exclude outliers, followed by normalization of the indicators. Indexes were generated for each FPEIR component through the median of the indicators and maps of the indicators and indexes were prepared. The areas most vulnerable to degradation (higher values in the FPEI indices) are located mainly in the northwest, center and southeast regions of the basin. Regarding the response (higher values in the R index), the areas to the west, northwest and southeast of the basin stand out. The indicators that most influenced the FPEI indices were the Municipal Human Development Index, establishments with occupying producer, deforestation, erodibility, aridity index and degraded pastures. And in the case of the Response index, technical guidance and credit programs. Public policies and private initiatives to restore environmental quality are essential to reverse the degradation process, contributing to the sustainable management of the Caatinga.