Analysis of erodibility factors and declivity in the Gurgueia River sub-basin, Piauí - Brazil

Authors

Keywords:

Erodibility, Declivity, River basin, Soil management

Abstract

Soil degradation caused by erosion is one of the biggest environmental problems. The objective is to analyze the erodibility factors, slope in the Gurgueia-Piauí River (BHRG) sub-basin. The Geographic Information System (GIS) QGIS and ArcGIS were used to prepare thematic maps. The average slope resulted as smooth wavy (42.1%), flat (27.8%) and wavy to strong wavy (19.9%) over the entire length of the sub-basin. Erodibility resulted in very high (41%) mainly in sectors with a predominance of Neossolos Quartzarênicos soils, on average (7.1%) in the South and Southwest and low (51.1%) of the area associated with soil of the type Dystrophic Yellow Latosol. The expansion of grain agribusiness associated with inadequate soil management in areas susceptible to erosion at BHRG can compromise long-term environmental, social and economic sustainability, with important appropriate agricultural techniques for the soil to optimize its use and sustainable production capacity.

Author Biographies

  • Livania Norberta Oliveira, Federal University of Piauí

    Post-doctorate in Geography from the Federal University of Piauí (2019); PhD in Geography from the Federal University of Pernambuco (2017). He did a Sandwich doctorate in Geography at the University of Coimbra (2017). She holds a Master's degree in Development and Environment from the Federal University of Piauí (2011). Graduated in Full Degree in Geography from the Federal University of Piauí (2008). He is a member of the Geodiversity, Geomorphological Heritage and Geoconservation Study Group (GEOCON / UFPI); and in the Research Group Integrated Studies in Hydrographic Basins (IFMA); She is a teacher teacher at CEAD-UFPI (2018). It is part of the Bank of Evaluators of the National Higher Education Evaluation System (BASis) MEC. He coordinated the Geography Degree Course at the Faculty of Education São Francisco-FAESF (2012-2013). He coordinated the TCC at the Faculty of Education São Francisco-FAESF (2013). He works mainly in the area of ​​education and research, in the following themes: Development and Environment, Socio-environmental vulnerability, Hydrographic Basins, Sustainable Development, Urban and rural environmental impacts, Environmental management, Territorial planning and Environmental Education.

  • Cláudia Maria Sabóia Aquino, Federal University of Piauí

    Graduated in Full Degree in Geography from the Federal University of Piauí (1999), Master in Development and Environment from the Federal University of Ceará (2002) and doctorate in Geography from the Federal University of Sergipe (2010). She is currently an Adjunct Professor at the Federal University of Piauí, where she works in research and teaching undergraduate and graduate courses (Graduate Program in Geography at UFPI), in subjects and topics related to Physical Geography. He is Chief Editor of the electronic magazine EQUADOR and Leader of the Geodiversity Research Group, Geomorphological Heritage and Geoconservation (GEOCON). Together with Professor Dr. Gustavo Souza Valladares, he coordinates the PHYSICAL GEOGRAPHY Research Group. Has experience in the area of ​​Geography, with emphasis on Environmental Analysis. He is interested in the topics: Teaching in Physical Geography, Geodiversity, Geological and Geomorphological Heritage, Geoconservation, Watershed, Desertification and environmental planning.

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Published

2021-03-31

Issue

Vol. 15 (2021)

Section

Articles

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How to Cite

Analysis of erodibility factors and declivity in the Gurgueia River sub-basin, Piauí - Brazil. Terr@ Plural, [S. l.], v. 15, p. 1–14, 2021. Disponível em: https://revistas.uepg.br/index.php/tp/article/view/16655. Acesso em: 21 may. 2026.