植物-AM真菌联合修复排污河道复合污染沉积物

发布时间：2018-06-25 21:28

本文选题：植物修复 + AM真菌　；参考：《太原理工大学学报》2017年06期

【摘要】：针对重金属在我国排污河道底泥中大量富集的现状,进行玉米-黑麦草间作修复排污河道底泥的盆栽试验,并设置接种AM真菌的试验组,以研究植物-AM真菌在河道底泥修复过程中的作用以及真菌对河道底泥修复的辅助效果。结果表明:排污河道底泥中Zn、Cd含量严重超标,经玉米-黑麦草间作修复后情况明显好转,尤其在辅以AM真菌后,植物对Cd的吸收量显著增加,且植物对排污河道底泥的整体修复效果有所提升。底泥中重金属形态测试结果表明,玉米和黑麦草对河道底泥中的重金属元素有活化作用,但AM真菌对金属活化作用的影响不明显,仅有效促进了黑麦草对Cd元素的活化作用。重金属在植物体内不同部位的积累情况发现,AM真菌可促进金属元素由地下部分向地上部分的运输。植物-AM真菌联合修复的方法可促进沉积物中大分子有机物的降解,尤其对萘的降解效果较为明显。
[Abstract]:In view of the present situation of heavy metal accumulation in the sediment of sewage channel in China, a pot experiment of corn-ryegrass intercropping to repair the sediment of sewage channel was carried out, and a test group was set up to inoculate AM fungi. In order to study the role of plant-AM fungi in the process of river sediment remediation and the auxiliary effect of fungi on the restoration of river sediment. The results showed that the content of Zn ~ (+) CD in the sediment of sewage channel exceeded the standard seriously, and the situation was improved obviously after the intercropping of maize and ryegrass, especially after the addition of AM fungi, the uptake of CD by plants increased significantly. And the effect of plant on the whole restoration of sewage channel sediment has been improved. The results showed that maize and ryegrass could activate heavy metals in river sediment, but AM fungi had little effect on metal activation, which only promoted the activation of CD by ryegrass. The accumulation of heavy metals in different parts of plants showed that AM fungi could promote the transport of metal elements from underground parts to aboveground parts. The combined phytoremediation of plant-AM fungi can promote the degradation of macromolecular organic compounds in sediments, especially for naphthalene.
【作者单位】：太原理工大学环境科学与工程学院;太原理工大学建筑设计研究院;
【基金】：山西省青年基金资助项目(2015021119) 国家青年科学基金资助项目(51408396) 山西省高等学校科技创新资助项目(2016146)
【分类号】：X52

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