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15 August 2011Optical absorption properties of water components in Xixi wetland of
Hangzhou
Water optical properties are important factors that affect phytoplankton biomass, carbon formation and carbon output of
the upper body. Water spectral absorption properties are among the most important inherent optical properties. This
paper was a preliminary analysis on spectral absorption properties of water suspended particle, de-pigmented particle,
pigment particle and chromophoric dissolved organic matter (CDOM) in main channel of Hangzhou Xixi Wetland
National Park phase I. The results indicate that the absorption spectrum of suspended particle is similar to the
de-pigmented particle, while the absorption spectrum of pigment particle is almost submerged in the de-pigmented
particle; The absorption spectrum of de-pigmented particle and CDOM follows the exponential decay law, the former
slope Sd average value of the exponential function in the range of 400-700nm is 9.56±0.86μm-1, the latter slope Sgaverage value of the exponential function in the range of 400-500nm is 14.28±1.23μm-1. The absorption peak of
chlorophyll a of pigment particle near 440nm is virtually not existent and also very weak at 675nm. According to the
absorption contribution rate of each component to the total absorption, de-pigmented particle is the greater contributor
than pigment particle and CDOM in this field campaign. In addition, according to water mass classification based on the
contribution rate of absorption coefficient at 440nm, vast majority of the water body in study area could be classified
into the most optical complex water mass type.
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Fangfang Zhou, Bin Zhou, Weiping Zhu, Wenjie Dou, Zaiying Ling, "Optical absorption properties of water components in Xixi wetland of Hangzhou," Proc. SPIE 8203, Remote Sensing of the Environment: The 17th China Conference on Remote Sensing, 82031D (15 August 2011); https://doi.org/10.1117/12.910432