Abstract

FEBLES-GONZALEZ, José Manuel et al. Progress of the karstic-erosive processes of soils in San José de las Lajas polje. cultrop [online]. 2021, vol.42, n.4  Epub Dec 30, 2021. ISSN 1819-4087.

An update of the karstic morphogenesis in San José de las Lajas polje is carried out, with the objective of making a quantitative evaluation of the of karstic-erosive process advance. It is from a baseline of more than three decades in reference localities, in accordance with the conditions of use and management to which soils have been subjected. It demonstrates the effects of intensive anthropogenesis on the Red Ferrallitic soils, as a result of a multifactorial process, conditioned not only by the intrinsic properties of the soil cover and conditions of use, but also dependent on the geological-geomorphological conditions. The application of the Integrating System of Qualitative and Quantitative Methods allowed characterizing the complex influence of the relief in the evolution of the main morphometric parameters of the dolines with losses between 12.33-15.95 t ha-1 year-1. It converted into length units show reductions in the A+B horizons between 0.98-1.20 mm year-1, which exceed the permissible threshold values in terms of erosion proposed by the USLE and the rates of formation of soils derived from limestone rocks in Cuba. It has a marked tendency to increase, which confirm the need for protection and improvement so that their “immunity” to erosion ceases to be a myth and becomes a priority issue for Food Security in the post Covid-19 development programs in Cuba. These soils represent the maximum potential to satisfy the country's current demand for agricultural and livestock productions.

Keywords : evolution; relief; erosion.

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