Geoprocessing applied to physiographic characterization of the Lontras River Basin - Paraná, Brazil | Geoprocessamento aplicado à caracterização fisiográfica da Bacia do Rio Lontras - Paraná, Brasil
Keywords:
morphometry, Qgis, remote sensing, precipitationAbstract
The morphometric characterization is considered an important tool in the management of river basins, and it provides relevant information to decision making by managers who are associated with the geographic divisions. The use of Geographic Information Systems (GIS) and remote sensing tools, widespread in monitoring and spatial analysis, is characterized as a facilitator component in the search for characterization and identification of factors which influence the geomorphometric parameters of the territory. The current spread of geoprocessing and GIS in general, culminate in a wide availability of storage systems and computer programs for data processing and conversion. Based on the above, this study aimed to morphometric and rainfall characterization of the Salto do Lontra watershed, which covers the municipalities of Salto do Lontra and Nova Esperança do Sudoeste located in West Region of Paraná State, Brazil, using the software Qgis 2.14. In this regard, the Digital Elevation Model (DEM) was used with a spatial resolution of thirty meters, provided by the National Institute for Space Research and historical precipitation data provided by the Paraná Water Institute. Through the MDE an altimetric data correction was performed obtaining a Hydrologically Consistent Digital Elevation Model (HCDEM), in which were obtained by manipulating data in a GIS environment, physical variables to determine the morphometric parameters. The results demonstrated that the Salto do Lontra watershed has a drainage area of 177.54 km² and a perimeter of 99.29 km. The compactness coefficient obtained was 2.09, the form factor 0.19 and circularity index 0.23, indicating that the basin has elongated shape and low propensity to flooding. The drainage density was 0.85 km.(km²)-1, time of concentration 535.59 min. and sinuosity index of 40.57%. In addition, the data obtained in this study indicated that the average annual precipitation was 1896.85 mm, watching orographic effect on its distribution.Downloads
References
BRAZIL. Law No. 9433 of 8 January, 1997. Establishes the National Water Resources Policy, creates the National System of Water Resources Management.
BRAZIL. TOPODATA. National Institute for Space Research (Comp.). Geomorphometric database from Brazil. 2016. Available at: <http://www.dsr.inpe.br/topodata/acesso.php>. Accessed on: May 17, 2016.
CARDOSO, C. A. et al. Morphometric characterization of the River Basin Debossan, Nova Friburgo - RJ. Revista Árvore, Viçosa - MG, v.30, n.2, p.241 - 248, 2006.
EMBRAPA - BRAZILIAN COMPANY OF AGRICULTURAL RESEARCH. National Service Survey and Soil Conservation (Rio de Janeiro, RJ). Precedent of the 10th Meeting of Soil Survey Technique. Rio de Janeiro, 1979. 83p. (EMBRAPA-SNLCS. Micelanea, 1).
FERREIRA, C. C. M. Agroclimatic zoning for implementation of agroforestry systems with eucalyptus in Minas Gerais. Viçosa, MG: Federal University of Viçosa, 1997. 158P.
GUERRA, A. J. T.; CUNHA, S. B. Environmental degradation. In: CUNHA, S. B. Geomorphology and Environment. Rio de Janeiro: Brazil Bertrand, 1996. p. 337-339.
LEPSCH, I.F .; BELLINAZZI Jr., R .; BERTOLINI, D .; ESPÍNDOLA, C.R. Manual for utility survey of the physical environment and land classification in the use of system capacity. 4a approach. 2. ed. Campinas: Brazilian Society of Soil Science, 1991.175p.
NETO, A. F. S.; GUIMARAES, C. L.; ARAUJO, J. S.; ARAUJO, J. S. Geotechnologies Application for Morphometric Characterization of the Basin Gramame River - PB. Principia Magazine - Science Communication and Technological IFPB [S.L.], n. 20, p. 31-37, Aug. 2015. ISSN 2447-9187.
PARANÁ. PARANÁ WATER INSTITUTE. (Comp.). Precipitation Heights Reports. 2016. Available at: <http://www.aguasparana.pr.gov.br/modules/conteudo/conteudo.php?conteudo=264>. Accessed on: May 15, 2016.
QGIS Development Team, . QGIS Geographic Information System. Open Source Geospatial Foundation Project. Available at: <http://qgis.osgeo.org>. Accessed on: May 17, 2016.
SILVA, D. G.; MELO, R. F. T. In: Correa, A. C. B. Drainage density influence on interpretation of the geomorphological evolution of Brejo da Madre de Deus municipality tanks complex - Pernambuco, northeastern Brazil. Journal of Geography, v.26, n.3, p. 294 - 306. 2009.
Sotério, P.; PEDROLLO, M. C .; Andriotti, J. L. Map of isohyets of Rio Grande do Sul. XVI Brazilian Symposium on Water Resources, Vol. 16, 2005.
TEODORO, V. L. I.; TEIXEIRA, D.; COSTA, D. J. L.; FULLER, B. B. The concept of watershed and the importance of morphometric characterization to understand the local environmental dynamics. Magazine Uniara, v.20, p.137 - 157. 2007.
VILLELA, S. M.; MATTOS, A. Hydrology applied. São Paulo, McGraw-Hill Brazil. 1975.