Mapeamento de culturas permanentes e caracterização dos imóveis rurais no município de Irituia, Pará, Brasil : relatório técnico 04/2025

Abstract

Perennial crops play a significant economic role in the Brazilian market. In the Amazon, the cultivation of oil palm, citrus, and black pepper has grown substantially over the last decade. Despite this, existing land use and land cover maps still fail to efficiently identify these crops in the region. In this study, we used high-resolution satellite imagery to map these three crops in the municipality of Irituia, located in the Northeast Paraense mesoregion, state of Pará, Brazil. Additionally, we quantified the number of rural properties producing each crop based on data from the Rural Environmental Registry (CAR), and, considering the fiscal module (MF) of the municipality (55 ha), we classified the properties as small (≤1 MF), medium (>1 and ≤5 MF), and large (>5 MF). Mapping was performed using Maxar image mosaics (~30 cm resolution) available on Google platforms, with manual delineation of cultivated areas using QGIS software. The results indicated a total of 3,125 hectares of perennial crops in Irituia, of which 49% were citrus (1,533 ha), 47% oil palm (1,472 ha), and only 4% black pepper (120 ha). A total of 401 properties were identified with these crops registered in the CAR, with 199 cultivating citrus, 188 oil palm, and 69 black pepper. Of the total mapped area, 607 ha are located on properties not registered in the CAR, representing 34% of the total citrus area, 22% of the black pepper area, and 4% of the oil palm area. We also assessed the environmental status of these properties. The analysis revealed a total Legal Reserve (RL) deficit of 5,779 ha, of which 2,233 ha must be restored on-site, while 3,546 ha can be legally offset, with sufficient native vegetation available within the municipality to meet this demand. Furthermore, 63% of the Permanent Preservation Areas (APPs) in the municipality show environmental liabilities, with the highest occurrence in oil palm-producing properties. These findings highlight the need for integrated monitoring and restoration strategies, particularly in priority areas for conservation. Overall, the study provides a detailed diagnosis of land use and offers valuable data to support public policies aimed at territorial planning and environmental regularization in the Amazon region.