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Volume 17 Issue 3
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DUAN Hong-tao, ZHANG Bai, SONG Kai-shan, WANG Zong-ming, XU Yan-ling. Hyperspectral model of chlorophyll-a concentration in Nanhu lake in Changchun[J]. Advances in Water Science, 2006, 17(3): 323-329.
Citation: DUAN Hong-tao, ZHANG Bai, SONG Kai-shan, WANG Zong-ming, XU Yan-ling. Hyperspectral model of chlorophyll-a concentration in Nanhu lake in Changchun[J]. Advances in Water Science, 2006, 17(3): 323-329.
shu

Hyperspectral model of chlorophyll-a concentration in Nanhu lake in Changchun

  • 1.

    Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, China;

  • 2.

    Graduate School of CAS, Beijing 100039, China;

  • 3.

    Institute of Environment Science, Xi'an University of Technology, Xi'an 710048, China

Funds: The study is financially supported by the National Natural Science Foundation of China (No.40401003 and No.40371082) and the Knowledge lnnovation Program of Chinese Academy of Sciences (KZCX-NA-3-10).
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  • Received Date: December 13, 2004
  • Revised Date: March 06, 2005
    Graphical Abstract
    • Abstract
  • This study presents an approach to the determination of the trophic parameters of chlorophyll-a from field reflectance spectra in Nanhu lake in eutrophic status in Changchun.The reflectance spectra was measured using ASD FieldSpec spectrometer from April to september in 2004.Based on in situ water samplies and the reflectance measurements,the features of the spectral reflectance of the water are discussed.Algorithms are developed to evaluation the spectral data.The single band R753nm,the spectra ratio of R753nm /R681nm,and the reflectance first-derivative of 700 nm,showing a linear relationship,are found to be significantly correlated with the concentration of chlorophyll-a,and the determinative coefficient R2 gained by using the single band is higher than that gained with other two models.There is satisfactory correspondence between hyperspectral models and chlorophyll-a concentration,therefore,it is possible to monitor the water quality of Nanhu lake throngh the hyperspetral remote sensing data.
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    • References (21)
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