Integrated analysis of the landscape in the hydrographic basin Coronel João Pessoa/RN
DOI:
https://doi.org/10.6008/CBPC2179-6858.2020.007.0027Keywords:
Physical and Environmental Aspects, Semiarid, Land Use and Occupation, GeotechnologiesAbstract
An analysis of a landscape from a river basin has the advantage of determining well-defined boundaries, where the model and shape of the basin define the landscape arrangements, or the effects that obviously affect anthropic activities in the area. The objective of the work was to carry out an integrated analysis of the landscape using geotechnological resources when considering physical and environmental aspects of the Hydrographic Basin Coronel João Pessoa/RN. For the development of research and understanding of the diversity and complexity of the landscape, thematic charts were drawn up to characterize the physical and environmental attributes of the territorial unit. APPs were identified in which they were classified as slopes above 45%, reservoirs in rural areas, springs and drainage network, where the use of the soil in these areas for purposes of agriculture, pasture, installation of buildings with sewage, has warned of possible environmental weaknesses in these areas. The integrated multitemporal analysis of the landscape between 2009 and 2019, shows an expansion of native vegetation and a significant increase in surface waters, despite the decrease in rainfall. There was a decrease in anthropic actions, which was not enough to reduce the area of exposed soil, as well as the presence of rocky outcrops along the terrestrial surface of the basin. In relation to vegetation cover, this has been reduced in areas with a slope above 45%, so it is possible to infer that there was increasing deforestation in the area, mainly due to the recurrent human activities in these areas, such as agriculture.
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