Estimativa de Taxas de Erosão Linear através de Levantamento por Posicionamento Global e Densidade do Solo (Estimating Erosion Rates through Linear Survey by Global Positioning and Soil Density)
DOI:
https://doi.org/10.26848/rbgf.v5i5.232800Keywords:
erosão de solos, GPS, densidade, taxas.Abstract
Este artigo apresenta os resultados de uma estimativa de taxa de erosão linear através de dois levantamentos planialtimétricos com o uso de receptor GNSS (Global Navegation Sattelite System) num intervalo de doze meses e de análise de densidade global do solo erodido pelo processo de ravinamento localizado em área do Campus da Unesp de Presidente Prudente. Foi constatada uma taxa de erosão linear de 148,65 t/ha/ano, cujo solo apresentou densidade global de 1,43 g.cm-3, sendo esta taxa quatro vezes superior à taxa constada em parcelas experimentais de cultivo de algodão (Lepsch, 2002), o que demonstra a importância do estudo e estimativas das taxas e evoluções das feições erosivas lineares.
Palavras-chave: erosão de solos, GPS, densidade e taxas.
Estimating Erosion Rates through Linear Survey by Global Positioning and Soil Density
ABSTRACT
This paper presents the results of an estimative of erosion linear rates through of two topography withdrawals with the use of GNSS (Global Navegation Sattelite System) receivers within twelve months and overall density analysis by eroded soil of ravines process located at Unesp of Presidente Prudente. It was observed a linear erosion rate of 148,65 t/ha/year, whose soil presented overall density of 1,43 g.cm-3, being this rate four upper turns as verified rate in experimental parcels of cotton crop (Lepsch, 2002), that shown the importance of research and estimations of rates and evolutions of linear erosion shapes.
Keywords: soil erosion, GPS, density and rates.
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Copyright (c) 2013 Alyson Bueno Francisco
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