不同种类湿地植物吸铜能力差异及规律性研究  

Variations among Wetland Plant Species in Copper Uptake and the Rules

作　　者：刘建国[1] 李光辉[1] 邵婉晨[1] 徐加宽[2] 

机构地区：[1]江苏工业学院环境与安全工程学院,江苏常州213164 [2]常州市农林局,江苏常州213001

出　　处：《江苏工业学院学报》2008年第1期51-54,共4页Journal of Jiangsu Polytechnic University

基　　金：常州市科技计划项目(CC2007203);江苏省"青蓝工程"中青年学术带头人项目

摘　　要：为探索不同种类湿地植物在铜污染废水中对铜吸收能力的差异,在人工湿地池中对10种湿地植物的吸铜能力及其规律性进行了研究。结果表明,不同种类湿地植物间植株铜浓度相差2倍,而植株铜积累量相差41倍,其原因是不同湿地植物间植株生物量(干重)相差51.8倍。相关性分析表明,不同种类湿地植物的铜积累量与植株铜浓度无明显关系,而与植株生物量的相关性达极显著水平(P<0.01)。该结果说明,在铜污染废水处理的湿地工程技术中,选择适宜的湿地植物种类对处理效果有很大影响。而在选择对铜积累能力强的湿地植物时,首要选择指标是植株的生物量,其次是植株铜浓度。本研究还筛选出了4个对废水中铜吸收积累能力强的湿地植物。In order to investigate the differences among wetland plant species in the uptake of copper （Cu） from wastewater, Cu accumulation in ten wetland plant species and the rules were studied in constructed wetlands. The results showed that the difference among the plant species was two times for Cu concentrations in the plants, but it was as much as 41 times for Cu accumulation. The reason for this is that the variation among the plant species was more than 50 times for plant biomass （dry weight）. Correlation analysis indicates that the accumulations of Cu in wetland plants have no obvious relation with Cu concentrations in the plants, but significantly correlate （P〈0.01） with plant biomasses. These results demonstrate that selection of suitable wetland plant species in the wetland for the treatment of Cu-polluted wastewater will greatly affect Cu removal efficiency. The first index for selecting wetland plant species with high Cu accumulating ability is biomass, and the second index is Cu concentration in the plant. Four wetland plant species with high Cu accumulating abilities were screened out.

关 键 词：铜 废水 湿地植物 吸收 规律 

分 类 号：X703.1[环境科学与工程—环境工程]