Avaliação do Uso e Ocupação do Solo na Área de Preservação Permanente do Açude Pataxó/RN

Abstract

The growth from the urbanization process and its economics activities increase the procedure of water quality degradation in the water bodies due to increased runoff and nutriente supply. Therefore, theres is a need to recognize the inappropriate land use and occupation to assist in environmental management and reduce the negative impacts provided. In this scneario, it was mapped the Permanent Preservation Area to identify the changes of use and occupation that occured between 2008 and 2016 in the Pataxó Reservoir, located in Ipanguaçu City. The metodology applied in this research used images obtained from remote sensing and implemented geoprocessing techniques in the Geographic Information System to elaborate previous classification that supported the indentification of the physical elements. Then, a field survey was carried out for a greater accuracy distinction between the classes, being used as parameters were used to elaborate the definitive version from the map of land use and occupation of the supervised classification. In this study it was possible to identify the classes of the urban and structure area, agriculture, rock outcrop, exposed soil, vegetation and pioneer vegetation. The results indicates that agriculture and urban area area few signficant denoting a low anthropogenic intervetion. In addition, there was an increase in vegetation from 2008 to 2016 ocurring higher preservation.