Investigation of Phytoplankton and Evaluation on Water Quality of Taizi River in Liaoyang Area
To evaluate water quality, an investigation of phytoplankton community was conducted in Taizi River of Liaoyang Area, June 2011. The results showed that 130 species of phytoplankton belong to 6 phyla and 63 genera existed. Chlorphyta has the richest species of algae, which accounted for 43.85% of the total number, followed by Bacillariophyta (32.41%). Water quality in upstream is better than downstream. Species and biomass of Cyanophyta and Euglenophyta which have tolerance of pollution increasing According to the integrative analysis result of Shannon-Wiener diversity index, Pielou Evenness index and Margalef Species diversity index, Taizi river is judged belong to low-polluted or oligo- polluted,but some sites belong to β -moderate polluted, effective managements should be taken in order to control the water pollution.