沙蚕对翅碱蓬-降油细菌系统降解菲效果的影响

发布时间：2018-01-16 14:17

本文关键词：沙蚕对翅碱蓬-降油细菌系统降解菲效果的影响　出处：《应用与环境生物学报》2016年05期 　论文类型：期刊论文

【摘要】：选取近岸大型优势底栖动物多毛类双齿围沙蚕(Perinereis aibuhitensis)以及盐沼先锋植物翅碱蓬(Suaeda heteroptera),应用微宇宙方法比较沙蚕、翅碱蓬、降油细菌3种生物类型不同修复组合对菲的降解效果,分析不同修复组合对沉积质细菌数量的影响,揭示沙蚕对翅碱蓬-降油菌去除、降解菲的强化效应.结果表明,不同生物组合对土壤菲的降解率存在明显差异,降解率从高到低依次为沙蚕-翅碱蓬-降油菌翅碱蓬-降油菌沙蚕.其中,至实验30 d时,沙蚕-翅碱蓬-降油菌和翅碱蓬-降油菌两种生物组合对菲的总降解率分别达到97.02%和93.93%;不同生物组合平均降解率均随着时间的延长出现下降趋势;沙蚕对菲去除途径(翅碱蓬-降油菌交互作用、非生物因素)有显著的强化作用,最高强化贡献率分别达到14.32%、20.08%.在0-5 d沙蚕-翅碱蓬-降油菌组合中土壤降油菌数量显著高于翅碱蓬-降油菌组合;随着时间延长,两种生物组合降油菌数量均出现下降趋势,至实验20-30 d时均降至对照组水平.综上可知,沙蚕-翅碱蓬-降油菌联合修复模式较其它模式修复效果更显著,沙蚕对各去除因子降解以菲为代表的多环芳烃(PAHs)有明显的强化作用,并对降油菌生长有促进效果.
[Abstract]:Selection of large coastal advantage of benthic animal polychaete perinereisaibuhitensis (Perinereis aibuhitensis) and salt marsh pioneer plant Suaeda Heteroptera (Suaeda Heteroptera), compare the application of micro cosmic Nereis, Suaeda salsa, reducing oil bacteria of 3 species of different types of combination of repair of phenanthrene degradation effect, analysis of the influence of different combinations of sedimentary bacteria repair quality the reveal of Suaeda salsa oil - drop lobworm bacteria removal, strengthening effect of degradation of phenanthrene. The results show that the combination of different biological differences on soil phenanthrene degradation rate, the degradation rate from high to low - down oil Nereis suaedasalsa bacteria of Suaeda salsa oil degradation bacteria - Nereis. Among them, to experiment 30 d, lobworm - down oil suaedasalsa bacteria and Suaeda salsa down total phenanthrene degradation rate of oil were two kinds of biological combination reached 97.02% and 93.93% respectively; the average degradation rate of different biological combination were decreased with the prolonging of time; sediment The approach for removal of phenanthrene silkworm (Suaeda Heteroptera down oil bacteria interactions, non biological factors) have a significant strengthening effect, strengthen the highest contribution rate reached 14.32%, 20.08%. in 0-5 D - suaedasalsa - reducing oil lobworm bacteria combination bacteria was significantly higher than that of soil reducing oil - oil degradation bacteria of Suaeda Heteroptera combined with time; extended, two kinds of biological bacteria combination reducing oil declined trend, to experiment 20-30 D decreased to the level of the control group. In summary, S.heteroptera down - lobworm effect than other modes repair and repair mode oil bacteria is more significant, the removal of PAHs lobworm with phenanthrene as the representative of the degradation factor (PAHs) there is a significant enhancement, and the decreasing oil bacteria growth promoting effect.

【作者单位】：大连海洋大学辽宁省海洋生物资源恢复与生境修复重点实验室;
【基金】：国家海洋公益性行业科研专项经费(201305002,201305043) 蓬莱19-3油田溢油事故海洋生态修复技术研究项目(201416)资助~~
【分类号】：X17;X55
【正文快照】： 海洋大型底栖动物的挖掘、灌注等生物扰动可以改变海洋沉积质的物理、化学性状,为海洋微生物创造出适宜的微生境[1],因此海洋大型底栖动物被称为“生态系统工程师”[2].近些年,随着对海洋污染生物修复方法的不断探索,海洋大型底栖动物在海洋污染修复中的作用倍受关注.底栖动物

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