Characterization of the environmental fragility of the Congonhas river sub-basin, MG
Environmental fragility is one of the study tools that use and visualize areas that are vulnerable or not to erosive processes, and when combined with the allowed use of water and environmental potential natural disasters. Given this context, the objective of this work was to characterize the enviro...
| Principais autores: | Veloso, Mariana Faria, Souza, Cristiano Marcelo Pereira de, Rezende, Bruna Nogueira |
|---|---|
| Formato: | Artigo |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná (UTFPR)
2020
|
| Acesso em linha: |
http://periodicos.utfpr.edu.br/rbgeo/article/view/10016 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: |
Environmental fragility is one of the study tools that use and visualize areas that are vulnerable or not to erosive processes, and when combined with the allowed use of water and environmental potential natural disasters. Given this context, the objective of this work was to characterize the environmental fragility of the Congonhas river sub-basin, MG, located between the municipalities of Grão Mogol and Itacambira, and having as future project the construction of the Congonhas dam. The analysis was constructed using SRTM (Shuttle Radar Topography Mission), official data and a Sentinel-2 satellite image, and integrated to the GIS environment obtained the environmental variables that influence the erosive processes. Through information of rainfall, slope and types of soils of the area the Potential Fragility Map (MFP) was generated and by combining this map with land use and occupation information obtained in the Emerging Fragility Map (MFE). Most of the region has been found to have fragility levels (potential and emerging) in the medium to very strong class. The areas of medium environmental fragility occupy 25.54% (MFP) and 18.88% (MFE) and the low fragility areas correspond to 36.73% (MFP) and 32.55% (MFE). The model produced generated important information for environmental management and territorial planning for future governmental, municipal and civil society projects, encouraging the rational use of natural resources and, especially, the monitoring of unstable areas. |
|---|