Mapeamento da erosividade e erodibilidade da vertente úmida do Maciço de Uruburetama/CE e entorno como subsidio ao planejamento ambiental
Erosivity and erodibility mapping of the humid slope of the Uruburetama/CE Massif and surroundings as a subsidy for environmental planning
DOI:
https://doi.org/10.21680/2447-3359.2023v9n2ID30719Abstract
Erosive processes are generated by natural and human causes. Anthropic activities enhance soil loss from inadequate management and compromise agricultural productivity and sustainability. This research aims to perform the mapping of erosivity and erodibility of the humid slope of the Uruburetama/CE Massif and surrounding area in order to support soil protection and management measures against water erosion. The Erosivity Map was obtained by the IDW interpolator through the calculation of erosivity performed based on rainfall records of 23 FUNCEME monitoring stations in a 10-year interval (2010-2019). The classes of erosivity are associated with the performance of local rainfall generating systems, which lose strength towards the continent. Thus, it was observed the occurrence of the classes of erosivity Moderate to Strong (92.66%) and Strong (7.34%). Soil erodibility was processed by Ordinary Kriging from the K factor obtained from the analyses of 92 samples of deformed soils (granulometry, soil structure, organic matter) and 92 undisturbed (permeability) collected in the research area. The erodibility classes are associated with the distribution and characteristics of local soils. The Very Low class (8%) is associated with the Eutrophic Háplico Solus and the Ortic Quartzarenic Neosol. The Lower class (83%) is related to the occurrence of Red-Yellow Argisol and the Litholic Neosol, while the Moderate class (9%) is associated with the Chromic Luvissol.
Keywords: Erosive processes. Anthropic activities. Handling.
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