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Multivariate approach for surface water quality mapping with special reference to nitrate enrichment in Sugadaira, Nagano Prefecture (Japan)

Author

Listed:
  • Pankaj Kumar

    (University of Tsukuba)

  • Sho Iwagami

    (University of Tsukuba)

  • Liu Yaping

    (University of Tsukuba)

  • Makato Mikita

    (University of Tsukuba)

  • Tadashi Tanaka

    (University of Tsukuba)

  • Tsutomu Yamanaka

    (University of Tsukuba)

Abstract

The hydrochemical study of the surface water along with land-use/land-cover study of its catchment area is useful for determining its suitability for support to aquatic ecosystem and agricultural purposes. The surface water quality around the wetland in Sugadaira region, Japan, is being affected both by complex hydrogeochemical processes and by anthropogenic activity, mainly intensive agricultural practices. Statistical analysis was carried out in this study using surface water chemistry data to enable hydrochemical evaluation of the water quality based on the ionic constituents, water types, and factors controlling water quality. Results show that the general trend of various ions was found to be Ca2+ > Mg2+ > Na+ > K+ and HCO3 − > NO3 − > SO4 2− > Cl−. Spatial distribution of water chemistry shows that enrichment of NO3 − has taken place along one side of the wetland that is exposed directly to human settlement and agricultural practices. This study is vital considering that pollution in a wetland indicates that poor health of water resources in the region not only makes the situation alarming but also calls for immediate attention.

Suggested Citation

  • Pankaj Kumar & Sho Iwagami & Liu Yaping & Makato Mikita & Tadashi Tanaka & Tsutomu Yamanaka, 2011. "Multivariate approach for surface water quality mapping with special reference to nitrate enrichment in Sugadaira, Nagano Prefecture (Japan)," Environment Systems and Decisions, Springer, vol. 31(4), pages 358-363, December.
    • Handle: RePEc:spr:envsyd:v:31:y:2011:i:4:d:10.1007_s10669-011-9343-8
    DOI: 10.1007/s10669-011-9343-8
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    Cited by:

    1. Liying Wang & Ming Ye & Paul Z. Lee & Richard W. Hicks, 2013. "Support of sustainable management of nitrogen contamination due to septic systems using numerical modeling methods," Environment Systems and Decisions, Springer, vol. 33(2), pages 237-250, June.

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