Small-Scale Pond Effects on Reducing Pollutants Load from a Paddy Field

논의 양분유출 저감을 위한 저류지 효과

  • Kim, Min-Kyeong (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Kwon, Soon-Ik (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Jung, Goo-Bok (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Hong, Seong-Chang (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Chae, Mi-Jin (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Yun, Sun-Gang (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • So, Kyu-Ho (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA)
  • 김민경 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 권순익 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 정구복 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 홍성창 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 채미진 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 윤순강 (국립농업과학원 농업환경부 기후변화생태과) ;
  • 소규호 (국립농업과학원 농업환경부 기후변화생태과)
  • Received : 2013.09.23
  • Accepted : 2013.10.31
  • Published : 2013.12.31


BACKGROUND: Water-born pollution loads by agricultural non-point source (NPS) pollution are expected to become intensified due to ongoing precipitation change. Therefore, it is essential to develop a best management practice (BMP) that is suitable to agricultural environments in Korea. This study aimed to develop an environmental-friendly BMP to reduce NPS pollution load by agricultural activities. An eco-friendly way, small drainage pond, was suggested in this study to avoid direct drainage of agricultural runoffs and eventually reduce the amount of pollutants discharged into the surrounding aqua-environment. METHODS AND RESULTS: A small pond ($12m^2$) was constructed at the corner of a rice paddy field ($1,715m^2$) located in Suwon, Korea. Water was allowed to drain only via a small drainage pond. Sampling was repeatedly made at two locations, one from an entrance and the other from an exit of a pond, during the rice cultivation period (May to October, 2012). Generally, sampling was made only when runoff water drained through a pond, such as during and/or after rain (irrigation). The water quality analysis showed that all quality parameters (SS, $COD_{Mn}$, T-N, and T-P) were improved as water passed through the pond. The amount of runoff water was reduced by 96~100%. Suspended solids and COD concentrations was reduced by 79.3% and 45.6%, respectively. In case of T-N and T-P concentrations, the reduction rates were 52.2% and 60.5%, respectively and the amount of T-N and T-P were reduced by 16.3~73.0% and 15.4~70.1%, respectively. CONCLUSION(S): Our data implies that agricultural NPS pollution from rice paddy fields can be effectively managed when an appropriate drainage water management practice is imposed. In this paper, it was suggested that an installation of a small drainage pond can be effective to prevent not only the nutrient loss from rice fields but also pollutant discharge to surrounding water environments.


Grant : Research Program for Agricultural Science & Technology Development

Supported by : National Academy of Agricultural Science


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