Abstract
Lakes in desert areas are very different from large lakes in the eastern part of China,like Lake Taihu.The objective of this study was to find out the optical properties of desert lakes.Reflectance spectra were measured in October 2009 with ASD FieldSpec spectrometer.Concurrently,water samples were collected directly from the lake to be analyzed in laboratory.After correlation analysis between the TDS and concentration of chlorophyll-a,DOC,TSM,comparing absorption spectra of NPSS,CDOM,chlorophyll-a,and discussion of the remote sensing reflectance in different wave bands,the result shows TDS and water depth are the main influence of IOPs and AOPs.The TDS has influenced the absorption properties remarkably and has high correlation coefficient with the concentration of DOC and with absorption of CDOM in 240-300nm.Water depth is most important factor of remote sensing reflectance,and TDS plays a major role in 550-720nm within the same water depth ranges.These conclusions may provide useful RS basis to estimate water quality parameters in desert lakes.
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