【作者】 马旭；

【导师】 丁永生；

【作者基本信息】 大连海事大学 ， 环境科学， 2004， 硕士

【摘要】 生物修复技术作为一门新兴的环境生物技术，与传统的物理、化学修复技术相比，具有处理费用低、净化效果好、不造成二次污染等优点，因而受到世界各国的关注，并在治理污染土壤、地表水及地下水等方面发挥越来越重要的作用。欧美等等发达国家高度重视，并投入大量资金进行生物修复技术的研究和应用。我国作为发展中国家，更应重视生物修复技术的研究与应用。 生物修复包括植物修复、微生物修复等，本篇论文主要讨论滨海湿地环境的植物修复。寻找能够适合滨海湿地环境并且能耐受和净化各种污染的滨海湿地植物种是植物修复的关键所在，同时该植物还必须具有较高的生物量和一定的经济利用价值。 论文首先综述了土壤重金属污染的现状、植物修复技术的研究进展，并且对本文的研究对象—辽宁盘锦河口湿地生态系统中遍布海岸线78公里的一种非常常见的植物翅碱蓬的研究状况以及该植物与环境的作用机理进行了简单介绍；其次介绍了原子吸收和极谱仪两种技术手段，运用这些技术手段，对翅碱蓬的根茎叶及其周围土壤和海水的重金属含量进行了测定，并且对测定结果进行了分析比较，总结了Cu、Pb、Cd在该植物体内的累积和形态分布特性以及其迁移转化规律，探讨重金属在其体内的迁移积累过程，发现其确实是一种海洋生态环境中的累积植物；最后介绍了赤碱蓬在生态工程和生态系统中的意义及其应用前景。更多还原

【Abstract】 As a kind of newly invented bio-environmental technology, bioremediation is much more available than the traditional technology of physical and chemical remediation as its advantage of low cost, high efficiency and no secondary pollution. As a matter of fact, it has attracted attentions from countries all over the world and has played an increasing role in the treatment of water and soil pollution. European and America countries had paid highly attention to it and have granted a lot to the relevant research and application, As a developing country, China is contributing more and more to the research and application of the bio-remediation.Corresponding techniques mainly include phyto-remediation, microbe remediation and so on. The former was focused on in this paper. The key point for phyto-remediation is to seek for one or more kinds of coastland plants which can grow and sprout adaptive to the surroundings and restrain contamination factors. At the same time, ecological functions and economic merits are additional considerations either.Firstly this paper summarily reviewed the present profile of pollution caused by heavy metal and the advances of phyto-remediation. Then it introduced a candidate plant named Suaeda heteroptera Kitag, which grows abundantly for about 78 miles along with the coast wetland oil field located in PanJin, LiaoNing province. And the mutual influence between local environment and this plant was also discussed. Secondly, using tools of both furnace atomic absorption spectrophotometry and polarography, the different metal distribution in the leaf, stem, root, soil and seawater were investigated systematically. Experimental data gives a clear description of how the metals of Cu, Pb and Cd were accumulated and distributed in this plant. That could help us to understand the transference rule of Cu, Pb and Cd in plant body parts. Therefore we conclude that Suaeda heteroptera Kitag could be an ideal plantgrowing there and could improve the environment infected by some harmful heavy metal. Therefore, the eco-engineering to protect the health of Suaeda heteroptera Kitag is the great contribution to the eco-system.更多还原