Journal
REVISTA CIENCIA AGRONOMICA
Volume 51, Issue 1, Pages -Publisher
UNIV FEDERAL CEARA, DEPT GEOL
DOI: 10.5935/1806-6690.20200004
Keywords
Modeling of water erosion; RUSLE; Tropical soils
Categories
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brazil (CAPES) [001]
- FAPEMIG [CAG-APQ 01053-15, APQ 00802-18]
- CNPQ [306511 / 2017-7, 202938 / 2018-2]
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The water erosion process has a considerable negative effect on tropical soils, causes soil losses from arable land and reduces the capacity to support surrounding ecosystems. Estimating soil losses caused by water erosion is fundamental for evaluating the impacts of various production systems. Therefore, improving soil loss estimates via the adaptation of models for different edaphoclimatic environments is necessary for estimating local geographic and climatic differences. This study aimed to adapt, apply and evaluate the potentialities of the Potential Erosion Method for Latosols of the Hydrographic Subbasin of Cavils Stream, southern Minas Gerais State. Geological, topographic, pedological, climatic and land use and occupation data were processed via Geographic Information Systems and compared with those obtained by the Revised Universal Soil Loss Equation. The erosion intensity coefficient, Z, was 0.28, indicating weak erosion intensity, and the estimated average soil losses were 31 Mg ha(-1) year(-1) by the Potential Erosion Method and 36 Mg ha(-1) year(-1) by the Revised Universal Soil Loss Equation, which were both above the soil loss tolerance. The model results and comparisons indicated that the Potential Erosion Method has excellent performance and can be applied to estimate sediment production via water erosion in tropical soils.
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