<b>Use of SRTM data to calculate the (R)USLE topographic factor</b> - doi: 10.4025/actascitechnol.v35i3.15792

Authors

  • Paulo Tarso Sanches Oliveira Universidade de São Paulo
  • Dulce Buchala Bicca Rodrigues Universidade de São Paulo
  • Teodorico Alves Sobrinho Universidade Federal de Mato Grosso do Sul
  • Elói Panachuki Universidade Estadual de Mato Grosso do Sul
  • Edson Wendland Universidade de São Paulo

DOI:

https://doi.org/10.4025/actascitechnol.v35i3.15792

Keywords:

digital elevation model, LS factor, soil and water conservation

Abstract

The topographic factor of the Universal Soil Loss Equation and its revised version (R)USLE are currently calculated by Digital Elevation Models (DEM) integrated to Geographic Information Systems (GIS). However, some countries have no topographic information to calculate DEM. In this study we evaluated the use of the Shuttle Radar Topography Mission (SRTM) data for computing the (R)USLE topographic factor. Furthermore, 90 m SRTM DEM, refined 30 m SRTM DEM and DEMs 30 m and 90 m derived from official topographic maps (1:100,000 scale) were used. Using DEMs the topographic factor was calculated by USLE-2D software. The topographic factor calculated from SRTM data showed greater detail levels (especially in flat areas) than those obtained from topographic maps. The reduction of spatial resolution of DEM-SRTM provided the topographic factor´s average rate decrease. SRTM data may be employed in further studies for soil loss predictions. The methodology may be useful in Brazil for the development of soil and water conservation programs.

 

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Author Biographies

Paulo Tarso Sanches Oliveira, Universidade de São Paulo

Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, SHS-EESC-USP, Caixa Postal 359, CEP 13560-970, São Carlos, São Paulo, Brasil.

Dulce Buchala Bicca Rodrigues, Universidade de São Paulo

Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, SHS-EESC-USP, Caixa Postal 359, CEP 13560-970, São Carlos, São Paulo, Brasil.

Teodorico Alves Sobrinho, Universidade Federal de Mato Grosso do Sul

Universidade Federal de Mato Grosso do Sul, UFMS, Caixa Postal 549, CEP 79070-900, Campo Grande, (MS)

Elói Panachuki, Universidade Estadual de Mato Grosso do Sul

Universidade Estadual de Mato Grosso do Sul, UEMS, Caixa Postal 25, CEP 79.200-000, Aquidauana (MS);

Edson Wendland, Universidade de São Paulo

Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, SHS-EESC-USP, Caixa Postal 359, CEP 13560-970, São Carlos, São Paulo, Brasil.

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Published

2013-02-27

How to Cite

Oliveira, P. T. S., Rodrigues, D. B. B., Sobrinho, T. A., Panachuki, E., & Wendland, E. (2013). <b>Use of SRTM data to calculate the (R)USLE topographic factor</b> - doi: 10.4025/actascitechnol.v35i3.15792. Acta Scientiarum. Technology, 35(3), 507–513. https://doi.org/10.4025/actascitechnol.v35i3.15792

Issue

Vol. 35 No. 3 (2013)

Section

Geography

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