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Characteristics of Nutrients Release by Submerged Plants in Flood Control Reservoirs within Juam Lake

주암호 홍수조절용지내 침수 식물체의 영양염류 용출 특성

  • Kang, Se-Won (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Seo, Dong-Cheol (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Han, Myung-Ja (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Han, Jong-Hak (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Lim, Byung-Jin (Yeongsan River Environmental Research Center, National Institute of Environmental Research Ministry of Environment) ;
  • Park, Jong-Hwan (Yeongsan River Environmental Research Center, National Institute of Environmental Research Ministry of Environment) ;
  • Kim, Kap-Soon (Yeongsan River Environmental Research Center, National Institute of Environmental Research Ministry of Environment) ;
  • Lee, Yeong-Jae (Yeongsan River Environmental Research Center, National Institute of Environmental Research Ministry of Environment) ;
  • Choi, Ik-Won (Division of Environmental Engineering, University of Seoul) ;
  • Lee, Young-Han (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Heo, Jong-Soo (Division of Applied Life Science, Gyeongsang National University) ;
  • Kim, Hyun-Ook (Division of Environmental Engineering, University of Seoul) ;
  • Cho, Ju-Sik (Department of Bio-Environmental Sciences, Sunchon National University)
  • Received : 2011.03.16
  • Accepted : 2011.04.05
  • Published : 2011.04.30

Abstract

To improve the quality of water from water supply source and to establish the management plan of dead plants in flood control reservoir around Juam Lake, the effect of water quality by dead plant in column with passing time was investigated. In column test, the amounts of release by Carex dimorpholepis were $7,893-7,917mg\;m^{-2}\;month^{-1}$ COD, $2,711-2,816mg\;m^{-2}\;month^{-1}$ T-N and $342-547mg\;m^{-2}\;month^{-1}$ T-P. The amounts of release by Miscanthus sacchariflorus were $6,487-6,507mg\;m^{-2}$ COD, $1,813-1,868mg\;m^{-2}$ T-N and $226-405mg\;m^{-2}\;month^{-1}$ T-P in column. Therefore, the release of COD, T-N and T-P by Carex dimorpholepis were more than those by Miscanthus sacchariflorus Benth in column.

상수원수의 수질개선과 효율적인 수질관리를 위한 저수구역내 초목류 관리방안을 제시하고자 주암호 홍수조절용지내에 서식하는 식물체들의 침수 시 일어나는 분해 특성 및 영양염류의 용출 특성을 조사하였다. 침수시기에 따른 식물체별 수질내 COD, T-N 및 T-P 용출 패턴은 식생에 관계없이 전반적으로 침수 4-6일 까지는 약간씩 감소하다가 침수 6-8일 이후부터 영양염류의 용출량이 서서히 증가하고 침수 20일 이후부터 급격히 증가하는 경향을 보였다. 침수지역간의 식물체별 영양염류 용출 특성은 큰 차이가 없었으며, 이삭사초의 COD 용출량은 $7,893-7,917mg\;m^{-2}\;month^{-1}$ 범위, T-N 용출량은 $2,711-2,816mg\;m^{-2}\;month^{-1}$ 범위, T-P 용출량은 $342-547mg\;m^{-2}\;month^{-1}$ 범위이었다. 물억새의 COD 용출량은 $6,487-6,507mg\;m^{-2}\;month^{-1}$ 범위, T-N 용출량은 $1,813-1,868mg\;m^{-2}\;month^{-1}$ 범위이었으며, T-P 용출량은 $226-405mg\;m^{-2}\;month^{-1}$ 범위이었다.

Keywords

References

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