Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
권호 표지

Characteristics of Nonpoint Source Pollution from a Reclaimed Rice Paddy Field

계화 간척지구 강우 유출수의 비점오염원 유출특성에 관한 연구

  • Received : 2009.09.09
  • Accepted : 2009.10.07
  • Published : 2009.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

This research addressed nonpoint source (NPS) pollution characteristics in a reclaimed rice paddy field. The paddy has an area of around 2,998 ha and is divided as two sub-watersheds, whose areas are 1,181 ha and 1,817 ha, respectively. Monitoring of hydrologic runoff and NPS pollution was undertaken during three-month period from June to August, 2008. Totally, three sampling trips were made when rainfall depth were 66.0 mm, 23.5 mm, and 23.0 mm, respectively. Generally pollution load increased with the heavier cultivation activity in Korea. Exported pollutants from the rice paddy, including TSS, TN and TP, have same levels as forest discharge. Organic nitrogen is main pattern but it mainly exists in the forms of dissolved organic nitrogen (DON). For phosphorus, dissolved inorganic phosphorus (DIP) takes the main part although part of them is associated with fine particles. This is different compared with other watersheds, where particles-associated phosphorus is the main form.

본 연구에서는 계화간척농지로부터 발생 되는 비점원 오염물질 유출현황을 조사하였다. 간척 논면적은 2,988ha로 크게 1,181ha와 1,817ha 크기의 두개의 소유역으로 구성되어 있다. 두개의 소유역에 대해 각각 3번의 강우사상에 대해 조사가 이루어졌으며 강우량은 각각 66.0, 23.5, 23mm이었다. 간척농지에서 오염물질 유출 특성은 일반 내륙의 논에서와 다른 양상을 나타내었다. 일반적으로 우리나라 논에서는 발생되는 비점오염부하는 큰 반면에 연구대상 간척농지에서 발생되는 TSS, TN, TP의 비점오염 유출수준은 일반 임야지역 수준으로 나타났다. 다른 유역과 다르게 질소의 경우 용존성 유기질소가 주종을 이루고 있으며 인의 경우에는 용존성 인이 주종을 이루고 있었다.

Keywords

References

  1. APHA, AWWA and WEF., Standard Methods for the Examination of Water and Wastewater, 19th edition. APHA/AWWA/WEF, Washington, DC, USA, 1995.
  2. Feng Y.W., Yoshinaga I., Shiratani E., Hitomi T., and Hasebe H., Characteristics and behavior of nutrients in a paddy field area equipped with a recycling irrigation system, Agricultural Water Management, Vol. 68, No. 1, pp. 47-60, 2004. https://doi.org/10.1016/j.agwat.2004.02.012
  3. Kim J. S., Oh, S. Y., Oh, and Kim Y., Nutrient runoff from a Korean rice paddy watershed during multiple storm events in the growing season, Journal of Hydrology, Vol. 327, No. 1-2, pp. 128-139, 2006. https://doi.org/10.1016/j.jhydrol.2005.11.062
  4. Kim Y., Report of Investigation of nonpoint source pollution in Seosan Area (A), the Institute of Environment Research, Hanseo University, 2006.
  5. KME., Nonpoint source pollution management handbook, Ministry of Environment in Korea, pp. 7-8, 2006.
  6. Kyuma. K., "Ecological Sustainability of the Paddy Soil-Rice System in Asia." International Seminar on the Appropriate Use of Fertilizers, Taiwan ROC, November 6-14, 1995.
  7. Lee, C.H., Park, C.Y., Ki Do Park, K.D., Jeon, W.T, and Kim, P.J., Long-term effects of fertilization on the forms and availability of soil phosphorus in rice paddy, Chemosphere, Vol. 56, No. 3, pp. 299-304, 2004. https://doi.org/10.1016/j.chemosphere.2004.02.027
  8. Takeda I., and Fukushima, A., Long-term changes in pollutant load outflows and purification function in a paddy field watershed using a circular irrigation system, Water research, Vol. 40, No. 3, pp. 569-578, 2006. https://doi.org/10.1016/j.watres.2005.08.034
  9. Yi Q.T., Hur C., and Kim Y., Dynamic runoff of nonpoint sources pollutants from agricultural areas, Journal of Korean Society on Water Quality, Vol. 24, No. 6, pp. 773-783, 2008.
  10. Zulu G., Toyota M., and Misawa S.I., Characteristics of water reuse and its effects on paddy irrigation system water balance and the riceland ecosystem, Agricultural Water Management, Vol. 31, No. 3, pp. 269-283, 1996. https://doi.org/10.1016/0378-3774(95)01233-8