도암호에서 하절기 수질의 장기적인 경향
(주)코리아스칼라
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- 2016.04.02
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- 2013.03
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서지정보
ㆍ발행기관 : 한국하천호수학회
ㆍ수록지정보 : 생태와 환경 / 46권 / 1호
ㆍ저자명 : 곽성진, 발데브, 이창근, 허우명
영어 초록
In the summer season (June~August) during the study period of Lake Doam, average concentrations of major water quality parameters, COD, SS, TN, and TP were 4.0, 16.2, 3.129 and 0.077 mg L-1, respectively, and Chl-a was 11.8 mg m-3. The result has indicated that Lake Doam was a meso-eutrotrophic lake. Lake Doam data from the summer season (June~August), precipitation from 2001 to 2012, and water quality (COD, SS, TN, TP, Chl-a etc.) of seven years (2001, 2002, 2004 and 2009~2012), were statistically analyzed for long-term trends by Mann-Kendall test and Sen’s slope estimator methods. The statistical results showed that precipitation, SD, COD, TN, NO3-N, NH3-N and Chl-a had decreasing trends, and EC, turbidity, SS, TP and DIP had increasing trends. Suspended solids and total phosphorus were directly affected by precipitation. In the case of suspended solids, more aggressive and constructive plans need to be implemented than the current turbidity reduction project to achieve the targeted water quality (5 mg L-1 of SS) in Lake Doam. In particular, we need to specify a project that considers the steep topographic characteristics of high, land farming areas and precipitation conditions of the Lake Doam watershed, which can increase the efficiency of a turbidity reduction project.
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