Abstract
In this study, we present the optical properties of the eutrophic water in Nanhu Lake of Changchun, China, as a case study done in September 2003 and April 2004. The lake water in Nanhu Lake is optically dominated by scattering from suspended matter, and the lake water is dominated by absorption from phytoplankton (CHL-a), total suspended matter (TSM) and yellow substance (or so-called CDOM). The main reason is that the Nanhu Lake is highly affected by the input from rivers and drainage systems from the city of Changchun which discharges a high concentration of CDOM, nutrients, and suspended mineral solids. We measured the spectral characteristics (400–900 nm) of Nanhu Lake using the ASD-field spectrometer and analyzed the optical properties of the eutrophic water. The spectral measurements will be continued during the period of 2004–2005. Further studies are still needed to refine the method for determining the optical properties of inland waters under study.
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