Caracterização espacial e visual da qualidade de pastagens no município de Nova Crixás, região do Brasil.

Abstract

The degradation of pastures is one of the main problems that leads to the loss of their quality in the country, affecting around 55% of the country's pastures. The objective is to perform a spatial-visual characterization of the pasture quality in the municipality of Nova Crixás, Central Brazil region, through the Pasture's Condition Score (PCS), remote sensing techniques using the Normalized Difference Vegetation Index (NDVI), and supervised classification of MapBiomas Brasil. The study will be carried out in the municipality of Nova Crixás. Maps of pasture quality will be extracted for the years 2000, 2005, 2010, 2015, and 2020 on the MapBiomas Brasil platform. Additionally, the area (ha) of pasture quality for the municipality of Nova Crixás and the farm will be quantified. The Normalized Difference Vegetation Index (NDVI) will be determined for the years 2000, 2005, 2010, 2015, and 2020. The Pasture's Condition Score (PCS) will be calculated. There is a growing increase in the moderate level of degradation for the municipal area between 2000 and 2015, mainly due to the strong intensification of the expansion of agricultural activities that, associated with poor soil management practices, intensify the degradative processes of areas under pasture dominance. As for the farm area, a reduction in the total pasture area from 2000 to 2005 is observed, which occurred mainly due to the diffusion and increase of areas for agricultural purposes with a focus on the expansion of monocultures.