期刊论文

Growth and heavy metal accumulation of Paulownia fortunei and Koelreuteria bipinnata in an ecological restoration site of the manganese-ore tailing

Wu, Xiao-Fu(wuxiaofu530911@vip.163.com)

中文

中国环境科学

1000-6923

2016

36

3

908-916

10.3969/j.issn.1000-6923.2016.03.037

国家科技惠民计划项目（2012GS430203）； 国家十二五科技支撑计划项目（2014BAC09B00）；

本校为第一且通讯机构

在湘潭锰矿废弃地种植泡桐和栾树,建立了4hm~2生态修复示范区.工程区基质Mn平均含量高达20041mg/kg,Pb、Zn、Cu、Cd含量也远超过湖南省和全国的背景值,属复合型重度污染.污染区不覆土,苗木移植前每株根际定量施用了含有自污染区矿渣分离出的抗性菌株的专用有机肥.种植两年后,泡桐和栾树成活率均达到83%以上.泡桐生长状况明显优于栾树,两种植物叶的重金属含量均大于根和茎,泡桐Mn、Cu、Zn的浓度和积累量显著高于栾树.5年生泡桐Mn积累量达到2295g/hm~2,转运量系数为2.32.试验证明,采用有机菌肥改良根际环境后,泡桐与栾树均可作为锰污染区的修复树种,而泡桐的生长速率和重金属的耐受和积累性能优于...

A four hectare ecological restoration plot using wood species P. fortunei and K. bipinnata as phytoremediation plants was established in the Xiangtan manganese-ore tailing. The total average content of Mn at the project site was 20041 mg/kg. The total average contents of Pb, Zn, Cu and Cd at the site were also much higher than the background values of Hunan province and China, showing a high level of multiple heavy metal contamination. The metal contaminated site was not sealed with normal soil. Before transplanting the seedlings, the rooting areas of the wood species at the experimental site ...