Abstract

It is necessary to comprehensively understand about lake water quality, environmental factors to successfully manage environmental problems such as eutrophication and mass propagation of phytoplankton in lakes. When it comes to a method of eutrophication evaluation, Carlson’s trophic state index (TSI) has been used so far but was not suitable for artificial lakes in Korea. Accordingly, a new Korean trophic state index (TSIKO), was developed and utilized by National Institute of Environmental Research. The purpose of this research is to identify current situation of water quality in the six spots of artificial lakes, to measure eutrophication through Korean TSIKO, to finally provide information on lake eutrophication management. As a result, Chl-a (Chlorophyll a) of KAC9 showed higher than others. According to Korean TSIKO, nutritional status by lake In 2016 showed that Paldang Lake was mesotrophic·eutrophic In the long-term from 2008 to 2016, Korean TSIKO of Paldang Lake ranged from 44 to 50 and it was assessed mesotrophic·eutrophic as well. To conclude, in the Han River That is why going downstream and increasing inflow link to increasing retention time in the lake as well as an increase of algae, nutrients and so on, it could be reasons of eutrophication and needs management continuously with nonpoint pollution. This paper could be applied a basic resource for comprehensive management of lake eutrophication by types of lake.

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