Resumo

MARCATTO, Francieli Sant’ana  e  SILVEIRA, Hélio. Effects of Use and Management and Physical-Hydric Dynamics of a Pedological System Derived from Sandstones, in Paraná-Brazil. Cuad. Geogr. Rev. Colomb. Geogr. [online]. 2023, vol.32, n.1, pp.140-157.  Epub 07-Mar-2024. ISSN 0121-215X.  https://doi.org/10.15446/rcdg.v32n1.93957.

Erosion is a serious environmental problem that affects Brazilian agricultural soils, mainly those with medium and sandy texture, naturally very susceptible to erosion, such as those occurring in the northwest of the state of Paraná, that have been potentially degraded, especially when cultivated with sugarcane. This work presents the survey of a characteristic slope and a typical pedological system of sandstones in the Santo Anastácio Formation, in the hydrographic basin of the Pirapó River. It studies the vertical and lateral transformations of the pedological horizons and its physical-hydric functioning, associating them with the use and management of sugarcane. The survey of the soils along the slope followed the Structural Analysis of Pedological Cover methodology. The physical, hydric, and chemical attributes of soils were determined in the pedological horizons identified in the trenches. The results pointed to a changing pedological system, where e-iluviation mechanisms and surface runoff act, enhanced by the management of sugarcane. The natural dynamics of the pedological system and the type of management adopted contribute to the installation and evolution of laminar and furrow erosion processes in the study area.

Palavras-chave : sugarcane; soil degradation; erosion; Luvisol; toposequence.

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