宝应湖浮游植物群落演变趋势及其驱动因子分析

doi:10.19741/j.issn.1673-4831.2021.0272

Abstract

Abstract: Baoying Lake is located in the north of Yangzhou, Jiangsu Province. In order to evaluate the ecological health, series of investigations were carried out for the ecological status of Baoying Lake in 2014, 2016, 2018 and 2019. The structure and variation tendency of pytoplankton community and the potential relationships of pytoplankton community with environmental driving factors were studied by using correlation analysis and redundancy analysis. The results show that Chlorophyta, Cyanophyta and Bacillariophyta dominated the phytoplankton community in Baoying Lake. A total of 103 species of phytoplankton belonging to 68 genera were identified in 2019, which showed an increase of 17 genera and 27 species compared with that in 2014. The total phytoplankton abundance in 2019 was 26.87×10⁶ L^-1, which showed an increase of 755.73% compared with that in 2014. The phytoplankton abundance in the downstream was significantly higher than that in the upstream of the lake. Cyanophyta and Bacillariophyta showed the tendency of further dominating the pytoplankton. However, Shannon-Wiener Diversity Index and Pielou Evenness Index were assessed of significant variation from year to year, and the water of Baoying Lake in these years was slightly polluted. The redundancy analysis show that transparency, TP, DO and NH³-N concentrations are the main environmental factors that drive the changes of phytoplankton community and species abundance.

Key words: Baoying Lake, phytoplankton, succession, water quality evaluation, driving factors

CLC Number:

X835

ZHU Yu-lei, HU Xiao-dong, FENG Ye, HEN Wen-meng. Succession and Driving Factors of Phytoplankton Community in Baoying Lake[J]. Journal of Ecology and Rural Environment, 2022, 38(4): 485-493.

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Succession and Driving Factors of Phytoplankton Community in Baoying Lake

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