Analysis of the vegetation area and heat spots in the Porto Seguro settlement in Marabá-PA / Análise da área de vegetação e manchas de calor no assentamento de Porto Seguro em Marabá-PA

• Autor(a) principal: Dias, Layla Bianca Almeida
• Data de Publicação: 2020
• Outros Autores: Silva, João Paulo Soares da, Campos, Marcus Victor Almeida, Marques, Gleidson Pereira
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Veras
• Texto Completo: https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/22321
• topic: Burned; Anthropized Areas; Thematic Map; Geoprocessing.

Sustainable Development Projects (PDS) are settlements aimed at environmental conservation, through agricultural production activities associated with sustainability. However, many settlements suffer from anthropogenic activities (such as deforestation and burning) to prepare the soil. For this reason, this study aims to analyze the period from 2003 to 2018 at three-year intervals with the generation of thematic maps, which represent the variations of vegetation, anthropized areas and heat spots in relation to the occupation and management of the settlement area. For this, images from the Landsat 5/8 satellite from the INPE image catalog and data from BDQueimada were used, which were treated in the QGIS software using the Supervised Classification (SCP) method. Thus, resulting in the computation of 84 heat spots, 9.25 km2 of anthropized area in the studied period. It should also be noted that in the period from 2015 to 2018, the greatest number of heat spots was observed, even with the reduction in the evolution of anthropized areas. So, it is possible to detect with this study the evolution in the hotspots and reduction of vegetation, from the use of geotechnologies to detect these points that offer conservation risk to the vegetation of the settlement.