Influence of Use and Land Cover Combined with Rainfall on Water Quality of the Watershed of Ingaí River – RS/Brazil

Authors

  • Makele Rosa de Paula Universidade Federal de Santa Maria
  • Ana Caroline Paim Benedetti Universidade Federal de Santa Maria
  • Waterloo Pereira Filho Universidade Federal de Santa Maria

DOI:

https://doi.org/10.11606/rdg.v32i0.119330

Keywords:

Water quality, Limnological Variables, Land Use, Ingaí River

Abstract

The impacts resulting from human action generates a series of changes in water quality. In this sense, the objective of this research is to analyze the influence use and land cover and of rainfall of the watershed of Ingaí river the water quality parameters the same. From Landsat 5/TM images they were performed use and land cover of maps for the dates 21/01/2009 (vegetative period – agriculture) and 20/10/2009 (period between harvests - soil exposed). For this, we used the system software SPRING 4.3.3. The classes use and land cover were defined: forest, agriculture, soil exposed, urban area, water and field. Together the data of precipitation and use and land cover were observed then their influences in some limnological parameters: total of solids in suspension (TSS), water transparency (DS), chlorophyll a (Chl a), water temperature (temp.), hydrogen potential (pH) e electric conductivity (CE). It is concluded that the change of the properties of water from the Ingaí river has strong relationship with changes in use and land cover of the watershed, mainly from diffuse sources, due to the extensive area intended for agriculture, soil exposed areas, allies the occurrence of rainfall.

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Author Biographies

  • Makele Rosa de Paula, Universidade Federal de Santa Maria
    Departamento de Geografia e área de geociências
  • Ana Caroline Paim Benedetti, Universidade Federal de Santa Maria
    Colégio Politécnico e área Geoprocessamento
  • Waterloo Pereira Filho, Universidade Federal de Santa Maria
    Departamento de Geografia e área de geociências

Published

2016-12-27

Issue

Section

Artigos

How to Cite

de Paula, M. R., Benedetti, A. C. P., & Pereira Filho, W. (2016). Influence of Use and Land Cover Combined with Rainfall on Water Quality of the Watershed of Ingaí River – RS/Brazil. Revista Do Departamento De Geografia, 32, 143-152. https://doi.org/10.11606/rdg.v32i0.119330