Detalhes bibliográficos
| Ano de defesa: |
2013 |
| Autor(a) principal: |
SANTOS, Cícero Gomes dos
 |
| Orientador(a): |
CANTALICE, José Ramon Barros |
| Banca de defesa: |
ALMEIDA, Brivaldo Gomes de,
OLIVEIRA, Flávio Pereira de,
AMARAL, André Júlio do,
LAFAYETTE, Kalinny Patrícia Vaz |
| Tipo de documento: |
Tese
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciência do Solo
|
| Departamento: |
Departamento de Agronomia
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4967
|
Resumo: |
The understanding of processes involved in the yield and transport of sediment on hydrosedimentological cycle from watersheds depends on the knowledge of the factors that control the gross erosion and sediment yield. The aim of this work was to monitor and quantify the suspended and bedload sediment yield and gross erosion of the Exu semiarid watershed by direct measurement, and to quantify the rates of the interrill, the rill and the gully erosion processes in order to compute the sediment delivery ratio from the Exu watershed. This watershed showed a highly branched drainage system and channels since straight until tortuous. The hydraulic and gully erosion rates predictions from the Exu watershed were found to be satisfactory because they were much closer to the observed final width and depth gully. The sediment yield and sediment delivery ratio from Exu were found to be 12.77 t km-2 year-1 and 0.0017, respectively. The value of the sediment delivery ratio can be greater for a larger monitoring period in case of the watersheds located in the semiarid regions |
