Dinâmica do uso do solo e a vegetação em unidades de proteção integral: o Parque Estadual Utinga, no estado do Pará-Brasil

Abstract

According to the Brazilian legislation provided in the National System of Conservation Units (Sistema Nacional de Unidades de Conservação - "SNUC") (Law No. 9.985/2000) Conservation Units are protected territorial areas by public power. They can divide in Full Protection Conservation Unit and Sustainable Use. In the Brazilian State of Para, the regulation of the creation and the appropriateness of the Conservation Units to "SNUC", occurred from the creation State System of Conservation Units (Sistema Estadual de Unidades de Conservação - "SEUC") (Law No. 5.887/1995). In relation to the Full Protection Conservation Units, in the category of State Parks, four parks have already been created for the State of Para: Utinga State Park, Serra of Martírios/Andorinha State Park, Monte Alegre State Park and Charapucu State Park. However, in this article we will present the results of the studies developed in the Utinga State Park (Parque Estadual do Utinga – "PEUT") that was created in 1993, it currently has 1393.87 hectares. It is standing at the Metropolitan Region of Belen, Para being the main supplier of water in the city where the issue of this research has focused on the anthropic actions that happen in the surrounding and particularly inside the park. It can modify the Use of the Land and Vegetation throughout from the creation of the park to 2015, focusing on: assessing the transformation of the Use of the Land and Vegetation in the Utinga State Park between the periods of 1993-2004-2015, with the purpose of subsidizing with information that contributed for Planning and Management in the Conservation of the Ecosystems and Forests in Preservation in Full Protection Conservation Units of Brazil. The images Landsat 5 e 8 were used classifying them in the categories: water, building, vegetation, aquatic, forest, disturbed vegetation and agricultural. Next, the "Protocol for the Evaluation of Use of the Land and Vegetation in Natural Federal Protected Areas of Mexico" was applied using the last three categories mentioned to make an overlapping between the years researched thus to identify the transformations of deforestation, disruption, recovery and revegetation. Therefore, it was determined that respectively for the 1993-2004-2015 in the Utinga State Park, the forest type covered 55.61 %, 59.61 % and 65.06 %, the disturbed vegetation bridged 13.85 %, 7.82 %, 7.37 %, and the agricultural kind comprised 2.65 %, 1.83 % and 0.43 %. Whereas for the periods 1993-2004 and 2004-2015 it was estimated that respectively, the areas with re-vegetation encompassed 0.7 % and 1.44 %, with recovery 5.65 % and 2.10 %, with disruption 0,58 % and 0.96 % and the deforestation maintained with 0.04 % for both years. As well as, rates of transformation for the Forest sort of 9.74 % for the period 1993-2004 and 9.92% for the period 2004- 2015, showing a constant increase of the Vegetational Forest.