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- Title
MAPEAMENTO TAXONÔMICO E A RELAÇÃO ENTRE O RELEVO E OS PROCESSOS EROSIVOS NA SUB-BACIA HIDROGRÁFICA DO RIO JAIBARAS, CEARÁ/BRASIL.
- Authors
de Mesquita Gomes, Maria Raiane; Falcão Sobrinho, José; de Oliveira Vital, Saulo Roberto
- Abstract
The present article presents the mapping of the landforms in the hydrographic sub-basin of the Jaibaras River, located in the state of Ceará, Brazil. To achieve this objective, the research methodology was based on Ross's taxonomic proposal (1992). However, this taxonomic proposal does not consider the semi-arid region, so adaptations had to be made using the classification of IBGE (2009) and Guimarães, Cordeiro, and Bueno (2017). Another objective, associated with the mapping, was to identify the soil erosion vulnerability index. For this stage, we used Crepani et al.'s methodology (2001). In the study area, we identified 3 morphostructural units, 3 morphosculptural units, 3 morphological units or patterns of similar forms, 5 units of landform types, and 3 slope units. In the 6th taxon, we identified natural erosive processes aggravated by human action and anthropogenic forms. As for the results of the erosion vulnerability mapping for the sub-basin, the morphosculptural unit of the Sertaneja Surface showed vulnerabilities ranging from moderately stable to moderately vulnerable. The morphosculptural unit of the Ibiapaba Sedimentary Plateau presented stable vulnerability, with prevailing pedogenesis. The morphosculptural unit of the Meruoca Residual Massif falls under the vulnerable classes, both in terms of incised valleys and steep slopes with sparse vegetation, young and shallow soils.
- Subjects
FORTALEZA (Brazil); SOIL erosion; ARID regions; HUMAN behavior; LANDFORMS; SOIL formation; MORPHOTECTONICS; EROSION
- Publication
Revista Geográfica Acadêmica, 2023, Vol 17, Issue 1, p90
- ISSN
1678-7226
- Publication type
Article