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KMID : 1024520070160070831
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Journal of the Environmental Sciences
2007 Volume.16 No. 7 p.831 ~ p.838
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Characteristics of Aquatic Environment in Close-to-Nature Onchun Stream - Before and After the Flowing of the Nakdong River -
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Kwon Dong-Min
Son Jung-Won
Yoo Eun-Hee
Jeong Jae-Won
Yun Na-Na
Hwang In-Jung
Kwon Ki-Won
Bin Jae-Hun
Cheigh Hong-Sik
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Abstract
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In order to improve the water environment at urban streams in Korea, several river restoration projects have been initiated for past few years. This study evaluates the impact of diverting water application at the riverhead of Onchun stream through the monitoring program for several water quality and ecological parameters. Various water quality parameters and ecological item such as benthic macroinverterates has been investigated between 09/05 and 12/06. Analysis indicates that the application of diverting water from Nakdong river to Onchun stream distinctly improved several water quality parameters such as, PH, BOD, TN, TP and concentrations of heavy metals. Low flow augmentation also improve ecological indicies such as the diversity index of benthic macroinvertebrates. Generally speaking, releasing addition water from head water of Onchun stream improves various water environmental characteristics.
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KEYWORD
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Water quality, Marcroinvertebrate, Onchun stream
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