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柳溪湖湿地生态修复前后浮游植物群落结构变化
Changes of Phytoplankton Community Structure before and after Ecological Restoration in Liuxi Lake

DOI: 10.12677/AEP.2021.114102, PP. 856-863

Keywords: 柳溪湖，生态修复，浮游植物，生物指数
Liuxi Lake, Ecological Restoration, Phytoplankton, Biotic Index

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Abstract:

为研究生态修复对浮游植物群落结构和生物多样性的影响，分别于2015年和2020年的夏季(7月)与秋季(10月)在宁夏柳溪湖湿地选取6个样点进行调查研究。使用SPSS12.0进行Kolmogorov Smirnov检验、one-way ANOVA和Kruskal-Wallis检验，并利用PSAT326b.1.1进行生物多样性分析。研究结果显示，生态修复后柳溪湖浮游植物种类增加，绿藻门浮游植物最为显著；藻类丰度与生物量均普遍升高，分别可达72,486.11 ind？L？1和13.77 mg？L？1；优势种种数减少，优势度指数相比于修复前升高；生态修复后呈现Shannon-Wiener多样性指数(H)下降而Pielou均匀度指数(J)夏季上升、秋季下降的特点。上述调查结果表明，在生态修复中柳溪湖浮游植物群落并不稳定，需要较长时间的演替使得生态系统趋于稳定。
In order to study the impact of ecological restoration on phytoplankton community structure and biodiversity, six samples were selected from Liuxi Lake Wetland in Ningxia in summer (July) and autumn (October) in 2015 and 2020. Kolmogorov Smirnov test, one-way ANOVA and Kruskal-Wal- lis test were performed using SPSS12.0, and biodiversity analysis was performed using PSAT326b. 1.1. The results showed that the species of phytoplankton in Liuxi Lake increased after ecological restoration, and the phytoplankton of Chlorophyta was the most significant. The abundance and biomass of algae were generally increased, up to 72,486.11 ind？L？1 and 13.77 mg？L？1, respectively. The number of dominant species decreased and the dominance index increased compared with that before repair. After ecological restoration, Shannon-Wiener diversity index (H) decreased, Pielou evenness index (J) increased in summer and decreased in autumn. The above survey results showed that the phytoplankton community in Liuxi Lake was not stable in ecological restoration, and it would need a long time of succession to make the ecosystem tend to be stable.

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