대청호 유입지천의 수질 특성 (Water Quality Properties of Tributaries of Daechung Lake, Korea)

서지정보

· 발행기관 : 한국수생태학회
· 수록지 정보 : 생태와 환경 / 48권 / 1호 / 12 ~ 25페이지
· 저자명 : 심무준, 윤재용, 이수형

초록

The tributaries of Daechung Lake play an important role in controlling eutrophication in the lake,which is used for agricultural purposes and as potable water. However, water quality properties were notextensively studied in the tributaries of Daechung Lake. The objectives of this study are to investigate spatialand temporal properties of water quality and to characterize streams which could threaten water quality ofDaechung Lake. For this study, water samples were weekly or monthly collected from February 2014 toOctober 2014 in 9 streams. Water quality parameters analyzed in this study include biochemical oxygendemand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), total nitrogen and phosphorus(TN and TP), suspended solids (SS), and chlorophyll a. Based on temporal distribution and principal componentanalysis, BOD, COD, TOC, SS, and TP were controlled by not only river discharge that increased duringsummer due to heavy rain fall, but also due to anthropogenic input (e.g., bridge construction and/or agriculturalactivity). Dilution is also one of the factors explaining TN and conductivity, both of which decreasedwith increased discharge. Generally, concentrations of contaminants (BOD, COD, TOC, TN and TP) in thetributaries were higher than those of Daechung Lake. However, pollution load indicated that only the mainchannel of Geum River and Sook Stream may largely influence lake waters, attributed mostly to their largevolumes. This implies that the main channel and Sook Stream are the major influences on the water quality ofDaechung Lake.

영어초록

The tributaries of Daechung Lake play an important role in controlling eutrophication in the lake,which is used for agricultural purposes and as potable water. However, water quality properties were notextensively studied in the tributaries of Daechung Lake. The objectives of this study are to investigate spatialand temporal properties of water quality and to characterize streams which could threaten water quality ofDaechung Lake. For this study, water samples were weekly or monthly collected from February 2014 toOctober 2014 in 9 streams. Water quality parameters analyzed in this study include biochemical oxygendemand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), total nitrogen and phosphorus(TN and TP), suspended solids (SS), and chlorophyll a. Based on temporal distribution and principal componentanalysis, BOD, COD, TOC, SS, and TP were controlled by not only river discharge that increased duringsummer due to heavy rain fall, but also due to anthropogenic input (e.g., bridge construction and/or agriculturalactivity). Dilution is also one of the factors explaining TN and conductivity, both of which decreasedwith increased discharge. Generally, concentrations of contaminants (BOD, COD, TOC, TN and TP) in thetributaries were higher than those of Daechung Lake. However, pollution load indicated that only the mainchannel of Geum River and Sook Stream may largely influence lake waters, attributed mostly to their largevolumes. This implies that the main channel and Sook Stream are the major influences on the water quality ofDaechung Lake.

참고자료

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