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当前位置: 首页 > 文章 > 狭叶香蒲分解体系对镉污染水体修复的影响 生态学杂志 2018 (8) 2490-2496
Position: Home > Articles > Effects of Typha angustifolia decomposition system on the remediation of cadmium polluted freshwater Chinese Journal of Ecology 2018 (8) 2490-2496

狭叶香蒲分解体系对镉污染水体修复的影响

作  者：
杜京京;周垠霏;张玉燕;郭瑞林;李柯
关键词：
狭叶香蒲;水生真菌;镉污染;隆线溞
摘  要：
选用狭叶香蒲(Typha angustifolia)凋落叶及其微生物分解者为修复材料,探索水生植物与微生物对重金属镉离子的联合修复作用。以水生浮游动物隆线溞(Daphnia carinata)为受试对象,研究了不同浓度Cd~(2+)(0.1、1.0、10μg·L-1)对其生存、生长和繁殖的影响。选择其中0.1μg·L-1作为Cd~(2+)污染浓度,分别将自然驯化以及Cd~(2+)驯化15天和21天的蒲叶放于含Cd~(2+)(0.1μg·L-1)的培养基中,测定隆线溞体长、第一次怀卵日、后代个数、繁殖率以及驯化后微生物分解者的群落组成。结果表明:Cd~(2+)添加显著降低了隆线溞的存活率,其中10μg·L-1Cd~(2+)的毒害作用最强,隆线溞的存活率仅有40%;自然驯化和加镉驯化的蒲叶能够显著改善Cd~(2+)干扰下隆线溞的个体生长与群体繁殖状况,且修复效果会随着驯化时间的延长而提高。个体的第一次生产时间提前1~2天,总产幼数提高22%~81%,群体繁殖率提高3.07~4.7倍,从而使食物链得到快速修复。真菌多样性分析表明,Dactylaria和Massarina在真菌分解者中占据优势地位,推测该属真菌具有修复Cd~(2+)污染的生态功能。
译  名：
Effects of Typha angustifolia decomposition system on the remediation of cadmium polluted freshwater
作  者：
DU Jing-jing;ZHOU Yin-fei;ZHANG Yu-yan;GUO Rui-lin;LI Ke;School of Materials and Chemical Engineering,Zhengzhou University of Light Industry;Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou University of Light Industry;
单  位：
DU Jing-jing%ZHOU Yin-fei%ZHANG Yu-yan%GUO Rui-lin%LI Ke%School of Materials and Chemical Engineering,Zhengzhou University of Light Industry%Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou University of Light Industry
关键词：
Typha angustifolia;;aquatic fungi;;cadmium pollution;;Daphnia carinata
摘  要：
We investigated the remediation effects of Typha angustifolia litter and its microbial decomposers on Cd~(2+)induced pollution. The impacts of Cd~(2+)with different concentrations(0.1,1.0,10 μg L-1) on the growth and reproduction of Daphnia carinata were examined firstly and then 0.1 μg L-1 of Cd~(2+)was used as the test concentration. The growth and reproduction of D.carinata were monitored after the addition of naturally incubated litter and Cd~(2+)incubated litter for 15 and 21 days. The results showed that the survival rate of D. carinata significantly decreased in the presence of Cd~(2+). The highest concentration of Cd~(2+)(10 μg L-1) showed the strongest toxic effect,with the survival rate of D. carinata being only 40%. The growth and reproduction rates of D. carinata were significantly improved under both naturally and Cd~(2+)incubated litter. For the reproduction parameters of D. carinata,the time for the first brood was shortened by 1-2 days,the number of offspring was increased by 22%-81%,and the reproduction rate was increased3.07-4.7 times. Such a result indicated that T. angustifolia litter with microbial decomposers could quickly restore the food chain under Cd~(2+)pollution. Dactylaria and Massarina were the dominant species among the decomposers of T. angustifolia litter,which could perform the remediation effect on cadmium pollution in the aquatic ecosystems.

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