Hyper-spectrum models for monitoring water quality in Dianshan Lake,China |
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| Authors: | Lin Donghai Qiu Yanling Huang Hongyan Hong Jun Wei Shihui Zhang Hongen Zhu Zhiliang |
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| Institution: | [1]Key Laboratory of Yangtze Aquatic Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092,China [2]School of Ocean and Earth Science, Tongji University, Shanghai 200092, China |
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| Abstract: | The correlation between water quality parameters and hyper-spectral reflectance is studied with models established for each
parameter and applied in Dianshan Lake, in the upstream of the Huangpu River running through Shanghai, China. Models are for
dissolved oxygen (DO in mg/L): R
720/R
680 = 20.362×(R
720/R
680)2−31.438×(R
720/R
680)+19.156; for turbidity (NTU): R*714.5 = 206.07×(R*714.5)2−582.5×R*714.5 + 423.24; and for total phosphorus (TP in mg/L): R*509.5 = 16.661×(R*509.5)2−32.646×R*509.5+16.116. The R
2 values are 0.770 8, 0.660 4 and 0.738 7, respectively, showing strong positive relationships. The models were then applied
to assess water quality of different times. Results are quite satisfactory for some samples.
Supported by the National Science and Technology Infrastructure Program of China (No. 2006BAJ08B02) and Students Innovation
Training Program of Tongji University |
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| Keywords: | hyper-spectrum water quality model Dianshan Lake remote sensing |
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