Abstract:A survey of phytoplankton and trophic status was carried out on August 21, 2009 in Shiziling Reservoir of Zhijiang which was used as a source of drinking water. The results showed that the reservoir had occurred Microcystis bloom. The quantitative analysis and diversity indices of phytoplankton community showed that the whole reservoir was in obvious eutrophic state, and Microcystis wesenbergii (Komárek) Komárek was the absolute dominant species. The niche measurement of phytoplankton indicated that cyanobacteria including Microcystis were being declining while Chlorophyta populations was being expanding, and the community successional tendency between Cyanobacteria and Chlorophyta was obvious. To understand the growth state, the chlorophyll fluorescence parameters of Microcystis sampled from the reservoir, cultured in dark for 24h or cultured underlaboratory illuminated conditions were compared. The results showed that in the late summer and early autumn Microcystis in Shiziling reservoir suffered from strong light stress. The analysis of nutrients suggested that the high concentrations of total nitrogen and total phosphorus and the suitable value of N/ P ratio were the main reasons for the occurrence of Microcystis bloom, and also were the key factors that resulted in the specific characteristics of phytoplankton community characteristics in Shiziling Reservoirs.
汪志聪, 饶本强, 李印霞, 刘永定, 李敦海. 湖北枝江市石子岭水库蓝藻水华研究[J]. 中国环境科学, 2012, 32(10): 1875-1881.
WANG Zhi-Cong, RAO Ben-Qiang, LI Yin-Xia, LIU Yong-Ding, LI Dun-Hai. Primary study on cyanobacteria bloom in Shiziling Reservoir of Zhijiang, Hubei Province. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(10): 1875-1881.