Abstract This research was performed at May, September and October in 2013 at 26 stations of Jingpo Lake, aiming to investigate the algal species. A total of 140 kinds of algal species belonging to 74 genera of 8 phyla were identified. The algal community was dominated by Chlorophyta and Bacillariophyta, and significant difference was found on algal composition across 26 sampling stations. The algae had the species ranging from 3 to 35 and abundance ranging from 0.5×104 to 230.8×104cells/L, and obviously different across the sampling stations in the three seasons. Overall, Margalef values varied from 0.48 to 2.31, while Shannon-Wienner and Pieloud varying from 1.27 to 3.97 and 0.45 to 0.94, and TLI of the water varied from 40 to 60, both showing that the water status of Jingpo Lake varied from middle nutrition to light eutrophication. Pearson correspondence analysis was applied to explore the relationship between algal species and environmental parameters by SPSS 13.0. The result showed that water temperature, dissolved oxygen (DO), transparency (SD), permanganate index (CODMn) and ammonia nitrogen (NH3--N) were the most important factors influencing the distribution of algal species across the 26sampling stations. Besides these, the other factors just like total nitrogen (TN) and fluorides (F) were also important to the algal species.
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Received: 15 April 2015
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