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Effect of Sampling Frequency During Storm Period on Estimation of Pollutant Load from Paddy Field

강우시 채수빈도가 논 오염부하량 산정에 미치는 영향

  • Han, Kuk-Heon (Div. of Environment & Ecology, National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Jin-Ho (Div. of Environment & Ecology, National Institute of Agricultural Science and Technology, RDA) ;
  • Lee, Jong-Sik (Div. of Environment & Ecology, National Institute of Agricultural Science and Technology, RDA) ;
  • Lee, Jeong-Taek (Div. of Environment & Ecology, National Institute of Agricultural Science and Technology, RDA) ;
  • Cho, Jae-Young (Insti. of Agri. Sci. and Tech. Chonbuk National University) ;
  • Yoon, Kwang-Sik (College of Agricultural & Life Sciences, Chonnam National University)
  • 한국헌 (농업과학기술원 환경생태과) ;
  • 김진호 (농업과학기술원 환경생태과) ;
  • 이종식 (농업과학기술원 환경생태과) ;
  • 이정택 (농업과학기술원 환경생태과) ;
  • 조재영 (전북대학교 농업과학기술연구소남대학교) ;
  • 윤광식 (전남대학교 농생대(농업과학기술연구소))
  • Published : 2005.03.31

Abstract

In order to examine effects of sampling frequency during rainfall-runoff process from paddy field on the estimation of pollution load, EMCs of several water sampling frequencies were examined. Water quality samples were conducted by every two hours interval for each event. It was found that difference of load estimation between five times sampling and two hours consecutive sampling during rainfall-runoff showed $15.2{\sim}-15.2%$ for T-N, $20.0{\sim}-26.2%$ for T-P, $28.6{\sim}-35.7%$ for the SS, respectively. In the same way, the effects of number of sampling data on estimation of pollution load using runoff-mass load(L-Q) method were investigated. L-Q equation made of five times sampling data provided 10% differences in estimation of mass loads of T-N, T-P, and SS when compared to those by L-Q equation using entire two hours consecutive sampling data during runoff process.

Keywords

Sampling Frequency;pollution load;T-N;T-P;SS

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Cited by

  1. Effects of Fertilizer Types on Pollutant Loadings from Rice Paddy Fields vol.53, pp.6, 2011, https://doi.org/10.5389/KSAE.2011.53.6.111
  2. Probabilistic Analysis of Vertical Drains using Hasofer-Lind Reliability Index vol.53, pp.6, 2011, https://doi.org/10.5389/KSAE.2011.53.6.001
  3. Characteristics of TN and TP in Runoff from Reclaimed Paddy Field of Fine Sandy Loam vol.46, pp.6, 2013, https://doi.org/10.7745/KJSSF.2013.46.6.417