Erosividad de las lluvias en Finca Tierra Brava de la subcuenca (S1) Río Los Palacios.

Water erosion is the main land degradation process worldwide and in Cuba it is the most widespread, with more than 43.3% of the agricultural area between strongly and moderately eroded. The objective of this work was to determine the erosivity of the rains in the Tierra Brava Farm located in the sub-basin 1 of the Los Palacios River, from the pluviometric records for the period (1999-2018) of the representative station of the"Paso Real de San Diego", taking into account climate variability, land cover, and soil and water conservation measures. 90% of the recorded monthly rainfall events were erosive and the erosivity evaluation through the monthly erosivity indices (Rm) and the modified Fournier index (IMF), maintain a significant correlation with monthly rainfall (y = 7.224x -239.7 R² = 0.977) (Y = 5.043x + 43.19 R² = 0.95), respectively, with values IFM higher than 160, which indicates a high aggressiveness of the precipitations. As a result of the analysis of each of the elements of the RUSLE model, it was concluded that in the area there is a moderate risk of soil degradation by erosion with values of 10.6 t ha-1 year-1 that increase to 17.7 t ha-1 year-1 when conservation measures are not taken into account. [ABSTRACT FROM AUTHOR]