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Assessing the stream water quality dynamics in connection with land use in agricultural catchments of different scales

Author

Listed:
  • Petr Fučík

    (Research Institute for Soil and Water Conservation, Prague, Czech Republic)

  • Tomáš Kvítek

    (Research Institute for Soil and Water Conservation, Prague, Czech Republic)

  • Martin Lexa

    (Research Institute for Soil and Water Conservation, Prague, Czech Republic)

  • Pavel Novák

    (Research Institute for Soil and Water Conservation, Prague, Czech Republic)

  • Alena Bílková

    (Research Institute for Soil and Water Conservation, Prague, Czech Republic)

Abstract

The ecological status of many surface waters in the Czech Republic is poor, mainly due to still relatively high discharges of N substances especially from agriculture. High nitrate values in the streams situated particulary in basins of drinking water reservoirs invoke the neccesity for the precise detection of diffuse pollution areas to enable the setting of the appropriate land management strategies or relevant measures. We introduce a simple method for estimating the changes of nitrate concentrations in surface waters regarding the land use modification. Stream and drainage water nitrate concentrations in prevailingly agricultural catchments of three different scales located in the Crystalline complex of the Czech massif were included in this study. Water quality samples were collected through the years 1992-2006 at monthly and bi-monthly intervals. For the catchment land use analysis, the satellite images LANDSAT 7 (CORINE Land Cover) and digitised cadastre maps of the land register were processed using ESRI ArcMap GIS; both sources corrected by field survey. We demonstrate on three different basin - scale studies a strong relation between the arable land ratio within a catchment and the coherent stream water nitrate concentration. The results acquired from all the evaluated catchments showed that every 10% decrease of ploughed land proportion in a catchment lowers the nitrate concentration C90 value (90% probability of non-exceedance) in average by 6.38 mg/l.

Suggested Citation

  • Petr Fučík & Tomáš Kvítek & Martin Lexa & Pavel Novák & Alena Bílková, 2008. "Assessing the stream water quality dynamics in connection with land use in agricultural catchments of different scales," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 3(3), pages 98-112.
    • Handle: RePEc:caa:jnlswr:v:3:y:2008:i:3:id:19-2008-swr
    DOI: 10.17221/19/2008-SWR
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    Citations

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    Cited by:

    1. Christopher O. AKINBILE & Andrew E. ERAZUA & Toju E. BABALOLA & Fidelis O. AJIBADE, 2016. "Environmental implications of animal wastes pollution on agricultural soil and water quality," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 11(3), pages 172-180.
    2. Jan Haberle & Helena Kusá & Pavel Svoboda & Jan Klír, 2009. "The changes of soil mineral nitrogen observed on farms between autumn and spring and modelled with a simple leaching equation," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 4(4), pages 159-167.
    3. Renata DUFFKOVÁ & Antonín ZAJÍČEK & Eva NOVÁKOVÁ, 2011. "Actual evapotranspiration from partially tile-drained fields as influenced by soil properties, terrain and crop," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 6(3), pages 131-146.
    4. Miroslav DUMBROVSKÝ & Veronika SOBOTKOVÁ & Bořivoj ŠARAPATKA & Radka VÁCHALOVÁ & Renata PAVELKOVÁ CHMELOVÁ & Jan VÁCHAL, 2015. "Long-term improvement in surface water quality after land consolidation in a drinking water reservoir catchment," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 10(1), pages 49-55.

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