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http://dx.doi.org/10.17820/eri.2017.4.4.226

Evaluation of Water Quality Characteristics at Kyeongan Stream Using the Flow-Loading Equation and Factor Analysis  

Kwon, Phil-Sang (Han River Environment Research Center, National Institute of Environment Research)
Park, Min-Ji (Han River Environment Research Center, National Institute of Environment Research)
Lee, Young-Joon (Han River Environment Research Center, National Institute of Environment Research)
Cho, Yong-Chul (Han River Environment Research Center, National Institute of Environment Research)
Noh, Chang-Wan (Han River Environment Research Center, National Institute of Environment Research)
Jung, Woo-Seok (Han River Environment Research Center, National Institute of Environment Research)
Kim, Ji-Ho (Han River Environment Research Center, National Institute of Environment Research)
Yu, Soon-Ju (Han River Environment Research Center, National Institute of Environment Research)
Publication Information
Ecology and Resilient Infrastructure / v.4, no.4, 2017 , pp. 226-236 More about this Journal
Abstract
In this study, we aimed to analyze the characteristics of water quality variation at Kyeongan Stream for a decade and to investigate by the flow-loading equation. The correlation analysis of water quality parameters and the influence factors were examined by statistical analysis. The characteristics of water quality variation showed that the fluctuations in $BOD_5$, $COD_{Mn}$ and TOC were repeated from year to year. TN and TP were decreased by year. By the flow-loading equation, the concentrations of $BOD_5$, $COD_{Mn}$, TOC and TN were decreased when the flow rate was on the rise. However, the flow did not affect the concentration of TP. According to correlation analysis, $BOD_5$ was highly correlated with $COD_{Mn}$ and TOC with the correlation coefficients of 0.890 (p<0.01) and 0.721 (p<0.01). The result of factor analysis, we identified that the water quality in Kyeongan Stream has been highly influenced by the organic matter index, followed by nitrogenous substance depending on the seasonal variations and the influx of suspended solid in accordance with the increase of flow.
Keywords
Correlation analysis; Factor analysis; Flow-loading equation; Kyeongan stream; Multivariate statistics analysis;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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