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http://dx.doi.org/10.11614/KSL.2012.45.4.412

The Influence of Land Use on Water Quality in the Tributary of the Yeongsan River Basin  

Jung, Jae-Woon (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Lim, Byung-Jin (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Cho, So-Hyun (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Choi, Jin-Hee (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Song, Kwang-Duck (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Ha, Don-Woo (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Kim, Hae-Sung (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Park, Seung-Ho (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Hwang, Tae-Hee (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Jung, Soo-Jung (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Lee, Dong-Jin (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Kim, Kap-Soon (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
Publication Information
Abstract
This study assessed the impacts of land use types on water quality in the tributary of the Yeongsan river basin. Temporal changes in water quality parameters (BOD, COD, TOC, T-P, T-N, SS) were investigated. 13 water sampling sites were selected; they were then collected and analyzed according to the standard method. The results showed that water quality parameters of the study sites ranged as follows : BOD, from 0.3 to $21.9mg\;L^{-1}$ (mean $3.3mg\;L^{-1}$); COD, from 1.0 to $38.0mg\;L^{-1}$ ($6.4mg\;L^{-1}$); TOC, from 0.6 to $20.0mg\;L^{-1}$ ($4.5mg\;L^{-1}$); T-P, from 0.009 to $1.973mg\;L^{-1}$ ($0.144mg\;L^{-1}$); T-N, from 0.6 to $17.1mg\;L^{-1}$ (mean $3.5mg\;L^{-1}$); SS, from 0.3 to $292.0mg\;L^{-1}$ ($20.3mg\;L^{-1}$). Generally, the paddy and upland dominated region had high concentrations of water quality parameters, whereas the forest dominated region had low concentrations. In addition, water quality parameters were positively correlated with paddy and upland, whereas the parameters were negatively correlated with forest. The result implies that paddy and upland are the dominant factors leading to stream pollution in the study sites, while a higher percentage of forest area contributes to improved water quality. Therefore, it is important to manage paddy and upland in order achieve efficient management of water quality.
Keywords
correlation analysis; land use; paddy; upland; water qualtiy;
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