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Soil loss and sediment yield in a perennial catchment in southwest Piauí, Brazil.
Assis, Kamylla Gonçalves Oliveira; da Silva, Yuri Jacques Agra Bezerra; Lopes, José Wellington Batista; Medeiros, João Carlos; Teixeira, Marcos Paulo Rodrigues; Rimá, Fernando Braga; Singh, Vijay P.
Afiliação
  • Assis KGO; Agronomy Department, Federal University of Piaui (UFPI), Planalto Horizonte, Bom Jesus, PI, 64900-000, Brazil.
  • da Silva YJAB; Agronomy Department, Federal University of Piaui (UFPI), Planalto Horizonte, Bom Jesus, PI, 64900-000, Brazil. yurijacques@ufpi.edu.br.
  • Lopes JWB; Agronomy Department, Federal University of Piaui (UFPI), Planalto Horizonte, Bom Jesus, PI, 64900-000, Brazil.
  • Medeiros JC; Federal University of Southern Bahia (UFSB), Itabuna, BA, 45604-810, Brazil.
  • Teixeira MPR; Agronomy Department, Federal University of Piaui (UFPI), Planalto Horizonte, Bom Jesus, PI, 64900-000, Brazil.
  • Rimá FB; Federal Institute of Maranhão (IFMA), Codó, MA, 65400-000, Brazil.
  • Singh VP; Biological and Agricultural Engineering Department, Zachry Department of Civil Engineering, Texas A&M University, College Station, TX, 77843-2117, USA.
Environ Monit Assess ; 193(1): 26, 2021 Jan 03.
Article em En | MEDLINE | ID: mdl-33389231
Soil and water are vital natural resources. However, due to their indiscriminate use, these resources are being seriously threatened. Therefore, it is essential to manage them in a sustainable way and leave them for future generations. Population and agricultural areas have expanded, deforesting native landscapes for cultivation and pastures. As a result, soil loss from agricultural areas is increasing the amount of sediment transport in water courses. The objective of this study was to quantify soil loss and sediment yield from the Corrente dos Matões sub-basin (CMSB). These measurements are essential to quantify the environmental impact of advancing agricultural frontiers. The Universal Soil Loss Equation (USLE) was applied due to its wide use, compatibility with GIS, and data availability. The suspended sediment transport was calculated by collecting samples with DH-48 sampler. From the application of USLE, the average soil erosion contributed very little to sediment delivery in the watercourse, with a magnitude of only 0.37 t ha-1 year-1. The highest soil loss was associated with greater slope and was observed in areas with agriculture or under the absence of vegetation cover. The low transport of suspended sediments in CMSB is due to the existence of preserved sites. About 99% of the sub-basin had a low degree of erosion. The high degree of soil loss was attributed to the cliffs and the development of agricultural activities leaving the soil uncovered. This work will help identify the most susceptible areas to water erosion for optimizing the allocation of financial resources for the preservation of this natural resource.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Conservação dos Recursos Naturais País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Conservação dos Recursos Naturais País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda