Análise do risco à erosão do solo no município de Lucena - Paraíba.

The erosion processes are natural phenomena that occur in all environments, but the risk of soil destruction in Brazilian regions is very high due to the susceptibility of Brazilian soils to erosion. The soil loss in Brazil are derived from factors external geodynamics of the Earth, such as floods and floods, landslides of soil and / or rocks and storms. Several municipalities in Paraíba suffer the intense action of erosion. The municipality of Lucena, located in the Paraíba coast, not unlike this reality. This city was chosen as the study area for this work is inserted in two distinct geo-environmental units, the Coastal Plain and Lower Coastal Uplands, which, added to the climatic factors and human interference may intensify existing erosion may result in the occurrence of soil loss and landslides. Thus, this paper analyzed the loss of ground in the city of Lucena through the USLE (Universal Soil Loss Equation) identifying areas prone to erosion. By means of this model has been identified that erosion occurs with increased intensity in the region in which the predominant soil type Alfissol where the degree of erosion varies from 10 to 200 t / ha / year corresponding to a degree of erosion of moderate to high . This area has rainfall that reach a value of up to 8864 MJ.mm/ha/h/ano erosivity, configuring, thus as an area susceptible to occurrence of soil erosion. Finally, it was concluded that the integrated use of GIS and USLE proved an efficient technique for spatial representation of soil losses in the city of Lucena and the identification of areas most susceptible to erosion.

Grantor

Geociências

Year dc:date.issued

2014

Author dc:creator

• Dias, Erika Rodrigues.

• Geografia urbana
• Erosão do solo
• Perdas do solo
• Sistemas de informações geográficas
• Urban geography
• Soil erosion
• Soil losses
• Geographical information systems

Language dc:language.iso

pt

Repository record dc:identifier.uri

https://repositorio.ufpb.br/jspui/handle/123456789/812

OAI identifier oai:identifier

oai:repositorio.ufpb.br:123456789/812