Retrieval of Chlorophyll-a in Lower Reaches of the Minjiang River Via Three-Band Bio-Optical Model

Tingting Xie; Yunzhi Chen; Wenfang Lu

doi:10.3788/LOP57.071701

Laser & Optoelectronics Progress, Volume. 57, Issue 7, 071701(2020)

Retrieval of Chlorophyll-a in Lower Reaches of the Minjiang River Via Three-Band Bio-Optical Model

Tingting Xie^1,2, Yunzhi Chen^1,2、*, and Wenfang Lu^1,2

¹National & Local Joint Engineering Research Center of Satellite Geospatial Information Technology, Fuzhou University, Fuzhou, Fujian 350116, China;

²Key Laboratory of Spatial Data Mining and Information Sharing of Ministry of Education, Fuzhou, Fujian 350116, China

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Figures & Tables(8)

Fig. 1. Research area

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Fig. 2. Remote sensing reflectance curves of different Chla concentrations

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Fig. 3. Correlation between Chla concentration and reflectance of each wavelength

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Fig. 4. Correlation between band combinations and Chla concentration

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Fig. 5. Positions of bands of the maximum correlation

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Fig. 6. Scatter plots of model variables and measured Chla concentration. (a) Three-band bio-optical model; (b) ratio model; (c) reflection peak model

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Fig. 7. Scatter plots of Chla concentration in model predicted and measured. (a) Three-band bio-optical model; (b) ratio model; (c) reflection peak model

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Table 1. Statistical results of the optical water quality parameters measured
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Table 1. Statistical results of the optical water quality parameters measured
Concentration n X_min X_max X_avg X_sd
Chla /(mg·m^-3) 40 1.81 28.5 11.48 6.78
SS /(mg·L^-1) 40 12 37 22.75 6.49

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Tingting Xie, Yunzhi Chen, Wenfang Lu. Retrieval of Chlorophyll-a in Lower Reaches of the Minjiang River Via Three-Band Bio-Optical Model[J]. Laser & Optoelectronics Progress, 2020, 57(7): 071701

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