On Early Warning Indicators of the Blue-green Algae in Taihu Lake Using Relfectance Spectroscopy
FANG Li-gang
LIANG Zhu
Abstract：In recent years,as eutrophication of Taihu Lake mounts up,increasing N,P,C contents in lake sediments lead to algae blooms.Forty-four typical stations were selected to measure ultraviolet and mid-infrared spectroscopy in Taihu Lake in April,2011 and three water quality parameters were analyzed by every station, including Total Phosphorous (TP),Total Nitrogen (TN),Chlorophyll-a (CHL) in the study.The correlations between the water quality parameters and mid-infrared reflectance were analyzed based on synergy interval partial least squares (SiPLS).The results show that,for TN and CHL,the SiPLS models have the smallest RMSE,and TN and CHL can be detected efficiently by in situ mid-infrared spectral analysis (R2>0.62).Similarly,TN,TP and CHL can be monitored efficiently by ultraviolet bands with SiPLS models (R2>0.78).The study indicates that early warning indicators of the blue-green algae can be monitored by ultraviolet and mid-infrared spectroscopy technology,which can provide the water supply and conservancy authorities with referenced spatial information to manage water resources.
Keywords：Taihu LakeTNTPCHLmodel
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 6-10 )