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Cuadernos de Geografía: Revista Colombiana de Geografía
Print version ISSN 0121-215XOn-line version ISSN 2256-5442
Abstract
DOS SANTOS DA SILVA, Edson Rodrigo et al. Geotechnologies Applied to Analysis of Environmental Fragility to Erosive Processes. Cuad. Geogr. Rev. Colomb. Geogr. [online]. 2022, vol.31, n.1, pp.222-240. Epub Sep 06, 2022. ISSN 0121-215X. https://doi.org/10.15446/rcdg.v31n1.85654.
Erosive processes cause severe impacts on the environment, causing economic, social, and biodiversity losses. This paper aims to analyze the fragility of the environment to erosive processes in the Onça river basin, in Coxim-MS. The methodology was based on soil mapping, slope, priority areas for biodiversity conservation, and rainfall intensity to evaluate the potential fragility and land use and land cover, that by means of a boolean weighted overlap with the potential fragility resulted in the mapping of the environmental fragility. To validate the environmental fragility model, the erosive features were identified from a high-resolution image and a making, focusing on the areas named "soils with extreme exposure" from a classification, which had as its only aim to identify areas with the lowest degree of protection/ground cover. The results pointed to the predominance of medium (59.61 %) and high (23.66 %) environmental fragility, associated with high concentrations of erosive processes in "soil with extreme exposure" area, which are areas of low vegetation cover, classified by use. and land cover with the pasture classes.
Main ideas:
Research article that has as premise the analysis of environmental fragility to erosive processes within the watershed of the Onça stream (Coxim-MS), using geotechnologies for the systemic analysis of the environment, establishing propositional measures that assist in taking decisions for the management and conservation of the area.
Keywords : watershed; ambiental degradation; geoprocessing; soil management and conservation; Mato Grosso do Sul.