안동호와 진양호의 상류하천발생 난분해성유기물질 제어에 대한 호소의 기능
Lake's Function on Control of Refractory Dissolved Organic Matter caused by Upstream Rivers to Andong Lake and JinYang Lake
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초록
집중강우, 장마 및 태풍의 직접적인 영향을 배재한 기간 동안에 안동호와 진양호의 상류하천으로부터 발생되는 DOM과 RDOM의 부하량(DOC 기준)은, 안동호 상류하천에서 5.01-7.29(×102 kg/day)였고, 진양호 상류하천에서 1.23-3.75(×103 kg/day)이었다. 진양호 상류 두 개의 하천에서 진양호로 유입되는 DOM과 RDOM의 발생비율은 SS 발생비율과 높은 상관성(R2>0.8)을 나타내었으므로 장비사용과 장기간의 실험기간을 요구하는 DOC 및 RDOC 분석에 대체할 수 있는 신속 ․ 경제적인 지표로써 SS 수질인자를 활용할 수 있을 것으로 기대한다. 안동호와 진양호는 여름철 강한 강우 이후기간동안에 DOM 및 RDOM의 증가를 야기하고, 여름철 강우 이전 기간동안에도 DOM 및 RDOM에 대한 제어기능을 가지지 못하였다. 따라서 이들 두 호소수의 DOM 및 RDOM에 대한 수질적 개선을 위해서는 호소 상류유역의 비점오염원 자체의 제거가 이루어지거나, 호소로 유입되기 전에 이를 제어할 수 있는 완충지의 확보가 필요하다.
Abstract
Variations of load in both DOM and RDOM of inflowing rivers to lakes were in the range of 5.01-7.29(×102 kg/day) for AD lake and 1.23-3.75(×103 kg/day) for JY lake during the research period excluding the period directly affected by the strong rainy season and the monsoon and typhoon season. We observed a good relationship(R2>0.8) between SS load and DOM load (including RDOM) in both inflowing rivers to JY lake. Therefore, it was determined that SS would be an alternative parameter with a rapid and energy-efficient method for the analysis of both DOC and RDOC, which require the analytical equipment and a long time period. Both AD lake and JY lake may act as a DOM(including RDOM) source through primary production in the fall season. Because AD lake and JY lake may not act as a DOM buffer zone, both lakes couldn't control the DOM and RDOM in spring before the rainy season. Therefore to improve water quality in downstream rivers is needed to remove pollutants such as DOM and RDOM before inflowing to these lakes in upstream rivers, or to have the unique landscape of wetlands as a buffer zone.
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