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不同营养状态水体中生态浮床对浮游植物群落的影响

刘娅琴 邹国燕 宋祥甫 潘 琦 付子轼 刘福兴

刘娅琴, 邹国燕, 宋祥甫, 潘 琦, 付子轼, 刘福兴. 不同营养状态水体中生态浮床对浮游植物群落的影响[J]. 环境科学研究, 2015, 28(4): 629-637.
引用本文: 刘娅琴, 邹国燕, 宋祥甫, 潘 琦, 付子轼, 刘福兴. 不同营养状态水体中生态浮床对浮游植物群落的影响[J]. 环境科学研究, 2015, 28(4): 629-637.
LIU Yaqin, ZOU Guoyan, SONG Xiangfu, PAN Qi, FU Zishi, LIU Fuxing. Effects of Ecological Floating Bed System (EFBS) on Phytoplankton Community Structure in Water Bodies with Different Nutrient Levels[J]. Research of Environmental Sciences, 2015, 28(4): 629-637.
Citation: LIU Yaqin, ZOU Guoyan, SONG Xiangfu, PAN Qi, FU Zishi, LIU Fuxing. Effects of Ecological Floating Bed System (EFBS) on Phytoplankton Community Structure in Water Bodies with Different Nutrient Levels[J]. Research of Environmental Sciences, 2015, 28(4): 629-637.

不同营养状态水体中生态浮床对浮游植物群落的影响

基金项目: 国家水体污染控制与治理科技重大专项(2012ZX07101-009);国家自然科学基金项目(31360133)

Effects of Ecological Floating Bed System (EFBS) on Phytoplankton Community Structure in Water Bodies with Different Nutrient Levels

  • 摘要: 为研究不同营养状态下水体中浮游植物群落对生态浮床系统的响应关系及其影响因素,设不同营养水平试验组〔A组ρ(CODCr)、ρ(NH4+-N)、ρ(TP)分别为10.0、2.00、0.200 mg/L,B组分别为100.0、20.00、2.000 mg/L〕,每组设对照、框式浮床2个处理,每个处理3个重复. 自2012年8月5日—10月5日,定期对水体营养盐质量浓度、浮游生物群落特征、浮床植物的生长状况进行检测. 结果显示:①2个试验组浮床植物长势良好,其中B组浮床植物茎叶部分干物质量增加7.9倍,浮床系统对水体N、P的净去除率均在60%以上;②浮床系统能明显抑制浮游植物的大量生长(P<0.05),对浮游植物密度和总生物量在峰值处的最大抑制率可达75.9%(A组)和83.6%(B组);③框式浮床处理中浮游植物的群落结构比对照处理复杂,A组中浮游植物优势种为隐藻门的卵形隐藻(Cryptomonas ovata)、尖尾蓝隐藻(Chroomonas acuta)和绿藻门的四尾栅藻(Scenedesmus quadricauda)、小空星藻(Coelastrum microporum),B组为隐藻门的尖尾蓝隐藻和裸藻门的梭形裸藻(Euglena acus);④B组试验中,框式浮床处理浮游植物Shannon-Wiener多样性指数显著高于对照处理,生态浮床对浮游植物群落的影响更多体现在提升浮游植物的生物多样性上. 研究表明,浮床系统能高效去除水体N、P,抑制浮游植物的增殖,改变浮游植物的群落结构,并且这些作用受到水体营养水平的影响.

     

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  • 刊出日期:  2015-04-25

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