新丰江水库浮游植物功能分组特征及其与环境因子的关系

为了解新丰江水库的浮游植物功能群(Functional Group)特征及生态现状,2020～2021年逐月对新丰江水库的浮游植物群落结构和水体理化指标进行了调查分析.结果表明,水库主要水质指标达到国家《地表水环境质量标准》Ⅰ类标准.水库浮游植物可分为25个功能群,以A、D、E、F、J、K、L0、M、MP、NA、P、S...

Characteristics of phytoplankton functional groups and their relationships with environmental factors in Xinfengjiang Reservoir

To understand the structural characteristics of the phytoplankton functional groups (FGs) and the ecological status of Xinfengjiang reservoir, the structure of phytoplankton and physicochemical indexes of water were investigated and analyzed monthly from 2020 to 2021. The results showed that the major water quality indexes of Xinfengjiang reservoir met Ⅰ class standard of "Surface Water Environmental Quality Standard"(GB3838-2002). There were 25 identified phytoplankton functional groups. Among them, FGs A, D, E, F, J, K, L_o, M, MP, NA, P, S1, SN, TB, X1, X2, X3 and Y occurred frequently, and the dominant functional groups were A, E, F, J, L_o, MP, NA, X3 and Y. The main temporal changes characteristics of phytoplankton FGs occurred for L_o/A/E/Y in spring, for L_o/A/F/J/X3/NA in summer, for L_o/NA/F/A in autumn, and for L_o/E/MP/F/A in winter. The main dominant FGs were A, E, L_o, NA and X3, resulting from the oligotrophic factors of the reservoir. Correlation and Multivariate analysis (RDA) between phytoplankton abundance and environmental factors showed that pH, transparency and water temperature were the key factors affecting phytoplankton functional groups in Xinfengjiang Reservoir. The ecological state of Xingfengjiang reservoir is considered as in excellent level, as shown by its Q value with a range of 3.63~4.87.