지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Sediment pollutants have been considered an important source for the eutrophication of estuarine reservoir. In this study, the effects of pollutants released from bottom sediment to water column were investigated. Sediment samples were collected each two station from Namyang and Sukmoon estuarine reservoirs in August 2013. The fractionation result of sediment phosphorus indicated that Adsorbed-P (36.7±8.84 %) and Nonapatite-P (29.3±12.50 %) are the two dominant phosphorus groups in the sediments. For sediment release test, eight sets of acrylic chamber (0.3 m diameter×1 m high, with 0.15 m sediment depth) were used with aerobic and anaerobic environment.
Under anaerobic conditions, rates of NH4-N release from the sediments were highly variable, with final concentrations of NH4-N in the overlying water varying from between about 0.69～1.04 in Namyang and 2.58～4.23 mg/L in Sukmoon reservoir. The NH4-N release was active at the upstream around the confluence of tributary compared to downstream near the embankment. The PO4-P release was more obvious than NH4-N in anaerobic condition. The final PO4-P concentrations were approximately from two-fold to eight-fold higher than initial concentration. In terms of reservoir water quality management, not only tributary pollutants but also sediment nutrient loading is necessary to consider the water quality contribution.
목차
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참고문헌 (13)
참고문헌 신청
Chang, S. C. / 1957 / Fractionation of soil phosphorus / Soil Science 84 (2) : 133 ~ 144
Choi, L. S. / 2011 / Study on Water quality and Release Rate of Sediment in Lake / Journal of Korea Water Resources Association 44 (215) : 42 ~ 48
Hakanson, L. / 1983 / Principles of lake sedimentology / Blackburn Press
Hieltjes, A. H. M. / 1980 / Fractionation of inorganic phosphates in calcareous sediments / Journal of Environmental Quality 9 (3) : 405 ~ 407
Jang, B. W. / 2003 / A Study on the Degree of Pollution of Stream and Reservoir Sediments in Rural Area. Journal of Korean Society of Rural Planning 9(2) : 1-6(in Korea) / Jo
Choi, L. S. / 2011 / Study on Water quality and Release Rate of Sediment in Lake / Journal of Korea Water Resources Association 44 (215) : 42 ~ 48
Hakanson, L. / 1983 / Principles of lake sedimentology / Blackburn Press
Hieltjes, A. H. M. / 1980 / Fractionation of inorganic phosphates in calcareous sediments / Journal of Environmental Quality 9 (3) : 405 ~ 407
Jang, B. W. / 2003 / A Study on the Degree of Pollution of Stream and Reservoir Sediments in Rural Area. Journal of Korean Society of Rural Planning 9(2) : 1-6(in Korea) / Jo
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