Characteristics of Nonpoint Source Pollution from a Reclaimed Rice Paddy Field
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초록
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.
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.
참고문헌 (10)
- APHA, AWWA, "Standard Methods for the Examination of Water and Wastewater", pp.WEF, APHA
- Feng Y.W, "Characteristics and behavior of nutrients in a paddy field area equipped with a recycling irrigation system", Agricultural Water Management, 68(1), pp.47~60 (2004)
- Kim J. S, "Nutrient runoff from a Korean rice paddy watershed during multiple storm events in the growing season", Journal of Hydrology, 327(1), pp.128~139 (2006)
- Kim Y., "Report of Investigation of nonpoint source pollution in Seosan Area (A), the Institute of Environment Research", Hanseo University, ~ (2006)
- KME, "Nonpoint source pollution management handbook", Ministry of Environment in Korea, 7~8 (2006)
- Kyuma.K, "Ecological Sustainability of the Paddy Soil-Rice System in Asia", International Seminar on the Appropriate Use of Fertilizers, Taiwan ROC, 6~14 (1995)
- Lee, C.H, "Long-term effects of fertilization on the forms and availability of soil phosphorus in rice paddy", Chemosphere, 56(3), pp.299~304 (2004)
- Takeda I, "Long-term changes in pollutant load outflows and purification function in a paddy field watershed using a circular irrigation system", Water research, 40(3), pp.569~578 (2006)
- Qitao Yi, "농촌지역에서 유출시간에 따른 비점오염물질의 유출평가", 수질보전 한국물환경학회지, 24(6), pp.773~783 (2008), 한국물환경학회
- Zulu G., "Characteristics of water reuse and its effects on paddy irrigation system water balance and the riceland ecosystem", Agricultural Water Management, 31(3), pp.269~283 (1996)