Resumo

JAYA-SANTILLAN, Juan. Altos niveles de erosión hídrica en una microcuenca tropical calculado mediante el modelo USLE. Figempa [online]. 2023, vol.15, n.1, pp.26-39. ISSN 2602-8484.  https://doi.org/10.29166/revfig.v15i1.4269.

Based on the USLE method, GIS was used to model erosion rates in the Muchacho River Microbasin (MRM). The simulation results show an average soil loss of 74.4 t/ha/year, corresponding to the "high erosion" category. The headwaters of the MRM, characterized by scattered soils, sparse vegetation, grazing, steep slopes and frequent rainfall, show medium to very high soil erosion rates (> 25 t/ha/yr). On the other hand, areas with high vegetation density, moderate slopes and low rainfall present low erosion rates (0-25 t/ha/yr) and are mainly located in the central and lower part of the watershed. The simulation results showed a distribution of the data skewed to the right (skew = 1.05), i.e. severe erosion values with higher frequency; and leptokurtic (Kurt = 3.57) with lower frequency of extreme values.

Palavras-chave : USLE; muchacho river; soil water erosion; rainfall; microbasin; spatial analysis.

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