Assessment of land use and coverage changes in indigenous territory in the Brazilian Amazon

Abstract

The accelerated degradation of forest resources is an anthropic activity on a world scale. Degradation alters the natural landscape and impacts the way of life of traditional communities by reducing their area of occupation due to illegal invasions and by reducing the availability of essential natural resources for survival and income generation for families. The objective of the research was to analyze land use and land cover changes in the Indigenous Land (TI) Trincheira Bacajá, Pará. Using the Interactive Supervised Classification of Landsat 5 TM (1996) and Landsat 8 OLI (2020) satellite images, the land cover classes forest, hydrography and anthropized area for macrozoning (Total Area, Buffer Area and Area of TI) and microzoning of the study area into 16 regions. The classification accuracy analysis was obtained using the error matrix and validated by the Kappa concordance index. The TI Area had the smallest forest area converted into anthropic areas and the Buffer Area had the highest deforestation rate. The South-Southeast (SSE), North-Northeast (NNE) and Southeast (SE) micro-regions were the most anthropized, coinciding with the priority areas for deforestation control defined in the MAPBIOMAS platform.