春川地域의 人工湖堆積地에 함유된 燐의 存在形態에 따른 水質汚染의 可能性에 대하여 = Fractional Composition of Sediment Phosphorus and Potential for Water Pollution in Artificial Reservoirs in Chuncheon Area, Korea

다국어 초록 (Multilingual Abstract)

Fractional composition of sediment phosphorus and pollution potential of water quality by the sediments in three artificial reservoirs in the vicinity of Chuncheon area are investigated.
The fractional scheme was made for four chemically defined phosphorus forms as adsorbed phosphorus, nonapatite inorganic phosphorus, apatite phosphorus and organic phosphorus. The most abundant fraction is organic phosphorus and second, nonapatite inorganic phosphorus, so the efficient scavenging processes of dissolved phosphorus in lake water are biological uptake and chemical complexation.
The sediments are in high organic carbon contents of 1.74%, 2.45% and 0.77% in Lakes Soyang, Chuncheon and Uiam, respectively. The C/N ratios of the sediments are 7.4, 14.7 and 7.6 in Lakes Soyang, Chuncheon andUiam, respectively. This presents the organic matters deposited in the surficial sediments of the Lakes Soyang and Uiam are not mineralized so well. Based on the high labile fraction of sediments phosphorus, organic carbon contents, C/N ratios, sediments of Lakes Soyang and Uiam have high pollution potential to overlying water quality.