To illustrate the relationship between nutrients of Taihu Lake and growth of algal three ecological model were introduced: 1)OECD management model 2)Monod equation 3)logistic equation. Based on these models of lake eutrophication good relationships between nutrients concentration and chlorophyll-a were found. Taking advantage of the consistent correlation to estimate nutrient concentration in Taihu Lake from CMODIS chl-a image was possible.

Remote monitoring of eutrophication parameters with basic ecological models

Satellite remote sensing has a wide foreground of application in the survey and monitoing of water environment.After atmospheric correcting, water pixels of satellite remote sensing data of optic spectrum are mainly influenced by pollutants,soil and sand,and chlorophyll in the water.From studying the imaging course of polluted water in reflected spectrum,and under the hypothesis that the depth of water is very large(2 m),the function between pixel reflectance and the densities of synthetical pollutants and soil and sand in the water is deduced and solved with multi_spectral remote sesing data.Then, using this method, synthetical pollutant concentration of seawater over the waters of Pearl River Estuary are derived from TM remote sensing data in 2002, and verified by field data. The result showed that the heavily polluted water area of Pearl River Estuary is mainly distributed in the northeast part of the estuary, Victoria Harbor of Hong Kong, and Shengzhen Bay.

Quantitative Analysis on Water Pollution in the Pearl River Estuary by Remote Sensing Method

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Quantitative Analysis on Water Pollution in the Pearl River Estuary by Remote Sensing Method