Voçorocas

Resumo: A conservação do solo é essencial para os sistemas agrícolas, principalmente quando se objetiva o equilíbrio entre produtividade e meio ambiente. Para isto, os drones tem ganho espaço e importância, principalmente por conta de sua precisão e qualidade nas imagens geradas, deste modo, o objetivo desta pesquisa é averiguar a precisão de um levantamento de volumetria e perfil topográfico de uma voçoroca no município de Anhembi – São Paulo, utilizando fotos aéreas captadas por aeronave remotamente pilotada – RPA, georreferenciadas com pontos de controle e sem pontos de controle. Como metodologia foi realizado um voo com o drone DJI Phantom 4 Pro. As imagens foram trabalhadas pelo Agisoft educacional. Como resultados, podemos aferir que a variação encontrada foi sutil, o que demonstra que ao que antecede a contratação de um profissional para captação para os pontos de controle, devem ser consideradas outras variantes como aumento de carga horária e custos destes, em comparativo a estudos que não necessitam de um nível de precisão maior que o encontrado sem os pontos de controle, e se realizados de forma eficaz, também são aceitos.

Abstract: Soil conservation is essential for agricultural systems, especially when balancing productivity and the environment. For this, the drones have gained space and importance, mainly because of their precision and quality in the generated images. Thus, the objective of this search is to verify the accuracy of a volumetric survey and topographic profile of a gully in the municipality of Anhembi - Brazil. São Paulo, using aerial photos captured by remotely piloted aircraft - RPA, georeferenced with control points and without control points. As methodology was performed a flight with the drone DJI Phantom 4 Pro. The images were worked by the educational Agisoft. As a result, we can see that the variation found was subtle, which demonstrates that prior to hiring a professional to capture the control points, other variants should be considered as increased workload and costs, compared to studies. which do not require a higher level of accuracy than that found without the control points, and if performed effectively, are also accepted.

This study aimed to verify that the overall recovery of gullies in the rural town of Mineiros, Goiás State would be financially viable and environmentally sustainable. The work was done through literature searches and surveys of farmers in the municipality, who recovered gullies in their properties with the technical supervision of the Faculdades Integradas de Mineiros and data supplied by the Municipality of Mineiros (GO). We traced two strands, the first, the damage (financial) that the land with gullies bring to farmers in the region and the second, the costs to recover these lands with gullies, so that they become environmentally sustainable. In this second phase also took into account the growing consortium of typical species of the cerrado, the area surrounding the crater, for commercial purposes. In the analysis of both strands was confirmed that the recovery of gullies is financially viable and environmentally sustainable.