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


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.


  1. Lee, S. M., Yon, S. H., Kim, K. H. (1995) Changes in Concentrations of Urea-N , $NH_4$-N and $NO_3$-N in Percolating Water During Rice Growing Season, Korean Society of Soil Science and Fertilizer 28(2), 160-164
  2. Hong. S. G., Kwun, S. K. (1989) Characteristics of Pollutant Loading into Streams from Flooded Paddies, Journal of the Korean Society of agricultural engineers 31(3), 92-102
  3. Shih, G., W. Abtew, and J. Obeysekera 1994. Accuracy of nutrient runoff load calculations using time-composite sampling. Transations of the ASAE 37(2), 419-429
  4. Hong, S. K. (1997) Effects of sampling frequency on stream water quality assessment. Hankyong National University Annual Report. 29(1), 103-108
  5. Kim, J. S., Oh, S. Y., and Kim, K. S. (1999) Characteristics of concentration and load of nitrogen and phosphorus in paddy field areas, Journal of Korean society of Agricultural Engineering. 41(4), 47-56
  6. Oh, S. Y, Kim, J. S., Kim, K. S., Kim, S. J. Yoon, C. G. (2002) Unit loads of pollutants in a paddy fields area with large-scaled polls during irrigation seasons. Journal of the korean society of Agricultural Engineering. 44(2), 136-147
  7. Cho, J. Y.,(1999) Nitrogen balance and pollutant loading from a paddy field. A thesis for the degree of doctor, Jeonbuk National University
  8. Yoon K. S., Choi, J. Y., Han, K. H., Cho, J. Y. (2002) Flow weighted mean concentration and runoff-mass load relationship of pollutants derived from intensively sampled water quality data of a paddy field, Journal of the Korean Society of agricultural engineers 44(5), 127-135
  9. Smith, R.V., and D.A. Stewart (1977) Statistical models of river loading of nitrogen and phosphorous in the Lough Neagh system. Water Research 11(8), 631-636
  10. Shin, D. S., Kwun, S. K. (1990) The Concentration and Input/Output of Nitrogen and Phosphorus in Paddy Fields, Korean Society of Agricultural and Environment 9(2), 133-141
  11. Yuan, Y., and J. K. Mitchell (1999) A method to evaluate pollutant loads from tile drains. Transactions of the ASAE 42(5),1313-1319
  12. Kang, M S., Park S. W., Yoon, K. S., (1998) Variation of estimated pollutant loading from rural streams with sampling intervals. Proceedings of the 1998 Annual Conference. The Korean Society of Agricultural Engineers. 552-557
  13. Novotny, V., and Olem, H. (1994) Water quality prevention. identification and management of diffuse pollution, Van Nostrand Reinhold New York, NY
  14. Yoon, K. S., Choi, J. K., Cho, J. Y., Son, J. G, Koo, J. W. (2002) Comparison of initial and mean concentrations of Nitrogen and phosphorus in runoff from a paddy field. Korean Committee Irrigation and Drainage Journal 7(1), 27-35

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