Data/hora: 06/06/2024 13:20:20

Biblioteca(s): | Epagri-Sede.
Data corrente: | 20/09/2023
Data da última atualização: | 20/09/2023
Autoria: | CORSEUIL, C. W.; GIEHL, M. R.; PIMENTEL, L. O.; BACK, A. J.
Título: | Analysis of rainfall erosivity in South America.
Ano de publicação: | 2023
Fonte/Imprenta: | Concilium, Açores, v. 23, n. 18, p. 331-354, 2023.
Idioma: | Inglês
Conteúdo: | The study aimed to evaluate and spatialize rainfall erosivity, average annual rainfall and erosivity density in South America, based on 173 rain gauge stations in 7 countries, using 16 years of historical data series. The erosivity factor (EI30) from the USLE model was used to assess erosivity. The erosivity density was obtained from the relationship between erosivity and precipitation. An erosion risk map was obtained by associating the erosivity density with rainfall. The lowest erosivity factor obtained was 71.00 MJ mm ha-1 h-1 year-1 in Chile (El Sobrante) and the highest was 2,2452.00 MJ mm ha-1 h-1 year-1 in Brazil (Belém do Pará). The erosivity density showed values between 0.49 MJ ha-1 h-1 (Chile) and 12.59 MJ ha-1 h-1 (Brazil). High variability was also found for precipitation, with < 144.00 mm year-1 in Chile and > 4,327 mm year-1 (Colombia). In northeastern Brazil and northern Venezuela were identified the areas with the highest erosion risk, associated with low rainfall and high erosivity density.
Thesagro: | Average annual rainfall; Erosion risk; Erosivity density.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_58713.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (108659-1) - UPC - AP - DD -  -  -  - DIS