摘要
为研究生态修复对浮游植物群落结构的影响,分别于2015年与2020年的夏季(7月)和秋季(10月)在宁夏鸣翠湖湿地选取6个样点开展调查。调查结果显示,生态修复后鸣翠湖浮游植物种类增加,绿藻、蓝藻门浮游植物最为显著;藻类丰度与生物量均大幅升高,最高分别可达65,152.78 ind∙L−1和28.34 mg∙L−1;优势种种数减少,优势度指数相较于生态修复前普遍升高;生态修复后表现为Shannon-Wiener多样性指数(H’)降低、Pielou均匀度指数(J)升高。上述结果表明鸣翠湖浮游植物群落依然处于演替之中,生态系统趋于稳定还需要更长的时间。
In order to learn the effects of ecological restoration on phytoplankton community structure, six sample sites were selected in Mingcui Lake of Ningxia in summer (July) and autumn (October) in 2015 and 2020. The results showed that the phytoplankton species increased after ecological res-toration, and chlorophyta and cyanophyta phytoplankton were the most significant. The algal abundance and biomass increased significantly, reaching the maximum of 65,152.78 ind∙L−1 and 28.34 mg∙L−1, respectively. The number of dominance decreased and the dominance index gener-ally increased compared with that before ecological restoration. Shannon-Wiener diversity index (H’) decreased and Pielou evenness index (J) increased after ecological restoration. These results indicate that the phytoplankton community is still in succession, and it will take a longer time for the ecosystem to stabilize.
出处
《世界生态学》
2021年第3期415-422,共8页
International Journal of Ecology
