Biblioteca Digital de VanguardiaAssessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil
The present study analyzes factors that condition the occurrence of erosive incisions in the municipality of São Francisco de Assis, located in the western region of Rio Grande do Sul, in the Ibicuí river basin. Multicriteria analysis with GIS support was used for the development of map algebra oper...
| Autores principales: | , , |
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| Formato: | info:eu-repo/semantics/article |
| Lenguaje: | Inglés |
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Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas
2019
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| Acceso en línea: | https://www.revistas.usp.br/rdg/article/view/157356 http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/42338 |
| _version_ | 1782335061597618176 |
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| author | Oliveira, Mariana Xavier de Trentin, Romario Robaina, Luis Eduardo de Souza |
| author_facet | Oliveira, Mariana Xavier de Trentin, Romario Robaina, Luis Eduardo de Souza |
| author_sort | Oliveira, Mariana Xavier de |
| collection | Repositorio |
| description | The present study analyzes factors that condition the occurrence of erosive incisions in the municipality of São Francisco de Assis, located in the western region of Rio Grande do Sul, in the Ibicuí river basin. Multicriteria analysis with GIS support was used for the development of map algebra operations. The base maps for the definition of the map of erosive fragility were slope, soils, lithology and land use, with weights assigned to each of the variables present in the base maps. The mapping of erosive fragility was carried out by the map algebra operation carried out in the GIS, using the Raster Calculator tool. The areas with the lowest erosive fragility, occur in the NW portion of the municipality, and are related to the occurrence of natural tree vegetation. In the municipality, areas with medium erosive fragility occur at the extreme NE-E and NW, formed by soils on volcanic rocks or sandstone with volcanic contribution where the predominant uses agricultural. The occurrence of very high erosive fragility is associated with the substrate of sandstones, friable soils and low soil cover. The work showed the importance of the multi-criteria relationship involving physical attributes of the landscape and the study of land use is essential in studies of fragility and environmental potential. |
| format | info:eu-repo/semantics/article |
| id | clacso-CLACSO42338 |
| institution | CLACSO, Repositorio Digital |
| language | Inglés |
| publishDate | 2019 |
| publisher | Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas |
| record_format | greenstone |
| spelling | clacso-CLACSO423382022-03-17T15:14:44Z Assessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil Avaliação da Fragilidade Erosiva Usando Cruzamento de Mapas com Apoio do Sistema de Informação Geográfica do Município de São Francisco de Assis/RS/Brasil Oliveira, Mariana Xavier de Trentin, Romario Robaina, Luis Eduardo de Souza Multicriteria analysis Erosive fragility Planning The present study analyzes factors that condition the occurrence of erosive incisions in the municipality of São Francisco de Assis, located in the western region of Rio Grande do Sul, in the Ibicuí river basin. Multicriteria analysis with GIS support was used for the development of map algebra operations. The base maps for the definition of the map of erosive fragility were slope, soils, lithology and land use, with weights assigned to each of the variables present in the base maps. The mapping of erosive fragility was carried out by the map algebra operation carried out in the GIS, using the Raster Calculator tool. The areas with the lowest erosive fragility, occur in the NW portion of the municipality, and are related to the occurrence of natural tree vegetation. In the municipality, areas with medium erosive fragility occur at the extreme NE-E and NW, formed by soils on volcanic rocks or sandstone with volcanic contribution where the predominant uses agricultural. The occurrence of very high erosive fragility is associated with the substrate of sandstones, friable soils and low soil cover. The work showed the importance of the multi-criteria relationship involving physical attributes of the landscape and the study of land use is essential in studies of fragility and environmental potential. O presente trabalho analisa fatores que condicionam a ocorrência de incisões erosivas no município de São Francisco de Assis, localizado na região oeste do Rio Grande do Sul, na bacia do rio Ibicuí. Utilizou-se análise multicritério com apoio de SIG, para o desenvolvimento de operações de álgebra de mapas. Os mapas bases para a definição da fragilidade erosiva foram: declividade, solos, litologia e uso da terra, com pesos atribuídos a cada uma das variáveis presentes nos mapas bases. O mapeamento da fragilidade erosiva foi realizado pela operação de álgebra do mapa realizada no SIG, utilizando a ferramenta Raster Calculator. As áreas com menor fragilidade erosiva ocorrem na porção NW do município e estão relacionadas à ocorrência de vegetação arbórea natural. No município, áreas com fragilidade erosiva média ocorrem no extremo NE-E e NW, formadas por solos sobre rochas vulcânicas ou arenito com contribuição vulcânica onde predominam os usos agrícolas. A ocorrência de fragilidade erosiva muito alta está associada ao substrato de arenitos, solos friáveis e baixa cobertura do solo. O trabalho mostrou a importância da relação multicritério envolvendo atributos físicos da paisagem e o estudo do uso da terra sendo essencial em estudos de fragilidade e potencial ambiental. 2019-12-12 2022-03-17T15:14:44Z 2022-03-17T15:14:44Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.revistas.usp.br/rdg/article/view/157356 10.11606/rdg.v38i1.157356 http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/42338 eng https://www.revistas.usp.br/rdg/article/view/157356/158194 Copyright (c) 2019 Mariana Xavier de Oliveira, Romario Trentin, Luis Eduardo de Souza Robaina application/pdf Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas Revista do Departamento de Geografia; ##issue.vol## 38 (2019); 83-94 Revista do Departamento de Geografia; v. 38 (2019); 83-94 Revista do Departamento de Geografia; Vol. 38 (2019); 83-94 2236-2878 0102-4582 |
| spellingShingle | Multicriteria analysis Erosive fragility Planning Oliveira, Mariana Xavier de Trentin, Romario Robaina, Luis Eduardo de Souza Assessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil |
| title | Assessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil |
| title_full | Assessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil |
| title_fullStr | Assessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil |
| title_full_unstemmed | Assessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil |
| title_short | Assessment of Soil Erosive Fragility Using Cross Mapping with Support of the Geographic Information System in the Municipality of São Francisco de Assis/RS/Brazil |
| title_sort | assessment of soil erosive fragility using cross mapping with support of the geographic information system in the municipality of são francisco de assis/rs/brazil |
| topic | Multicriteria analysis Erosive fragility Planning |
| url | https://www.revistas.usp.br/rdg/article/view/157356 http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/42338 |