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http://dx.doi.org/10.14249/eia.2020.29.1.37

Classification of the Algal Monitoring Points by Histogram Analysis of Chlorophyll-a  

Lee, Saeromi (Department of Land,Water and Environment Research, Korea Institute of Civil Engineering and BuildingTechnology)
Ahn, Chang Hyuk (Department of Land,Water and Environment Research, Korea Institute of Civil Engineering and BuildingTechnology)
Park, Jae Roh (Department of Land,Water and Environment Research, Korea Institute of Civil Engineering and BuildingTechnology)
Publication Information
Journal of Environmental Impact Assessment / v.29, no.1, 2020 , pp. 37-44 More about this Journal
Abstract
In this study, we analyzed the value of Chl-a by histogram to classify the points where algal management is required. The degree of algal bloom by point was analyzed using the ogive curve, and the algal control points were classified into three stages according to the shape of the frequency distribution table. Of the four major rivers, low concentration of Chl-a appeared most frequently in the Han River, while the high concentration of Chl-a was frequently found at the points of the Geum and the Yeongsan Rivers. In the case of the Han River, no apprehensive areas were found thatrequire intensive management, while most points on the Geum and the Yeongsan Rivers required algal management. Finally, the Nakdong River basin was identified as points requiring algal management from the mid to downstream. The results of this study have confirmation of the possibility that the frequency distribution could be used as a supplementary indicator to express the algal bloom.
Keywords
Algal bloom; Histogram; Chlorophyll-a; Water quality measuring system; Algal apprehensive area;
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Times Cited By KSCI : 8  (Citation Analysis)
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