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Distribution Characteristics of Organic Matters and Nutrients in Surface Sediments of Yeongsan River Basin

영산강 수계 표층 퇴적물의 유기물 및 영양염류 분포 특성

  • Bong, Kimoon (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Kang, Taewoo (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Yang, Haejong (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Han, Jonghak (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Yang, Wonjun (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Jeong, Hyojin (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Jung, Heejung (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Hwang, Soonhong (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Kim, Kyunghyun (Yeongsan River Environment Research Center, National Institute of Environmental Research)
  • 봉기문 (국립환경과학원 영산강물환경연구소) ;
  • 강태우 (국립환경과학원 영산강물환경연구소) ;
  • 양해종 (국립환경과학원 영산강물환경연구소) ;
  • 한종학 (국립환경과학원 영산강물환경연구소) ;
  • 양원준 (국립환경과학원 영산강물환경연구소) ;
  • 정효진 (국립환경과학원 영산강물환경연구소) ;
  • 정희정 (국립환경과학원 영산강물환경연구소) ;
  • 황순홍 (국립환경과학원 영산강물환경연구소) ;
  • 김경현 (국립환경과학원 영산강물환경연구소)
  • Received : 2018.12.13
  • Accepted : 2018.12.24
  • Published : 2018.12.31

Abstract

This study was carried out to assess the distribution and pollution level of organic matters and nutrients in surface sediments of the Yeongsan River Basin. The surface sediments were collected from the mainstream (12) and tributaries sites (4) for two years from 2015 to 2016, and the particle sizes, organic matters (Ignition Loss, COD, TOC) and nutrients (TN, TP, SRP) were analyzed. The distribution of particle sizes was dominated by sand in the upstream sites (MS1-MS7) and by silt loam in the downstream sites (MS8-MS12), but MS3 and MS6, located slightly upstream of the two weirs, were found to be mostly loamy sand and silt loam, respectively. As a results of the correlation assessment, the organic matters (IL, COD, TOC) were strongly correlated with particle sizes, while the nutrients (TP, SRP) were weak except for TN. The concentrations of organic matter and nutrient were higher at the downstream and the sites nearby the two weirs (MS3, MS6). In particular, the TP concentration at the MS3 site sampled in the second half period of the years was higher than that in the first half periods. Comparing of sediments criteria, the organic matters and nutrients were evaluated to have almost no toxic effects at all sites.

Acknowledgement

Supported by : 국립환경과학원

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