Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Monitoring of Heavy Metals in Agricultural Soils from Consecutive Applications of Commercial Liquid Pig Manure

돈분액비 연용 농경지 중 중금속 함량 모니터링

  • Go, Woo-Ri (Chemical Safety Division, National Academy of Agricultural Science) ;
  • Kim, Ji-Young (Chemical Safety Division, National Academy of Agricultural Science) ;
  • Yoo, Ji-Hyock (Chemical Safety Division, National Academy of Agricultural Science) ;
  • Lee, Ji-Ho (Saemangeum Regional Environmental Office, National Institute Environment Research) ;
  • Kunhikrishnan, Anitha (Chemical Safety Division, National Academy of Agricultural Science) ;
  • Lee, Jeong-Mi (Chemical Safety Division, National Academy of Agricultural Science) ;
  • Kim, Kye-Hoon (Department of Environmental Horticulture, The University of Seoul) ;
  • Kim, Doo-Ho (Chemical Safety Division, National Academy of Agricultural Science) ;
  • Kim, Won-Il (Chemical Safety Division, National Academy of Agricultural Science)
  • 고우리 (국립농업과학원 화학물질안전과) ;
  • 김지영 (국립농업과학원 화학물질안전과) ;
  • 류지혁 (국립농업과학원 화학물질안전과) ;
  • 이지호 (국립환경과학원 새만금지방환경청) ;
  • ;
  • 이정미 (국립농업과학원 화학물질안전과) ;
  • 김계훈 (서울시립대학교 환경원예학과) ;
  • 김두호 (국립농업과학원 화학물질안전과) ;
  • 김원일 (국립농업과학원 화학물질안전과)
  • Received : 2012.08.24
  • Accepted : 2012.09.19
  • Published : 2012.09.30
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Abstract

BACKGROUND: Increase of heavy metals in agricultural ecosystem has become a social issue nationwide as it is related to public health. This study was performed to find out the status and long-term trends with consecutive application with the commercial liquid pig manure in the agricultural fields. METHODS AND RESULTS: Heavy metals including arsenic, cadmium, copper, lead, nickel, and zinc were analyzed in the 41 samples of paddy fields and 54 samples of upland fields consecutively applied with commercial liquid pig manure for 0 to 16 years. Heavy metal accumulation were not increased statistically at the both paddy and upland fields as the consecutive application year of commercial liquid pig manure were increased. However, some of surveyed upland soils exceeded the criteria of cadmium, copper, and zinc designated by the Soil Environmental Conservation Act in Korea. CONCLUSION: Therefore, analysis of heavy metals, specially copper and zinc, in agricultural fields is absolutely necessary before liquid pig manure application to the fields. In addition, heavy metal accumulation in agricultural fields following to the long-term application of liquid pig manure will be monitored periodically considering with bioavailability of copper and zinc to the crops as an essential nutrients.

본 연구에서는 돈분 액비를 연용한 논토양 및 밭토양의 유해 중금속을 관리하는 방안을 마련하고자 전국적으로 액비를 장기 시용한 연차별 논토양 41점과 밭토양 54점을 채취하여 유해 중금속인 카드뮴, 구리, 니켈, 납, 아연, 비소의 함량을 조사하였다. 액비연용에 따른 년차별 변화에서 논토양 및 밭토양 중금속 전함량은 원소별로 일부 증가하는 경향은 보이나 연도별 축적 차이를 통계적으로 확인할 수 없었다. 그러나 액비연용에 따른 중금속 특히 구리 및 아연의 축적 여부는 이들이 식물영양에 필수 원소로 작용함을 고려하여 보다 장기적인 관점으로 계속 검토되어야 할 사항이다. 그러나 일부 밭토양에서 토양오염 우려기준을 초과하는 지점이 조사되어 액비 시용 전 토양 내 중금속 함량조사를 통해 시용 여부를 결정하여야 할 것이다.

Keywords

References

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