Remote Sensing Analysis of Algae Bloom in Taihu Lake

With the economic development of Taihu drainage area,the water body in Taihu lake became more and more eutrophic.Especially in the late of 20th century,the algae bloom brake out repetitiously.Today,the State Environment Protection Administration(SEPA) usually based on 21 monitoring points to access water quality of Taihu lake.This method is limited to monitor large area algae bloom.Remote sensing(RS) technology can complete large scale,dynamic monitoring quickly.Especially to traditional water monitoring,RS technology is time-save and finance-save.Using RS technology to analyze Taihu lake's algae bloom,we can know algae bloom's area,distribution and extent easily.This article uses multi-temporal TM images to abstract algae bloom of Taihu Lake,to analyze characteristics of algae bloom occur,to reflect Taihu lake's water quality.