蚯蚓活动对汞污染土壤植物修复效果的影响  

Effects of earthworm activity on phytoremediation of Hg contaminated soil

作　　者：刘钊钊 黄沈发[2] 唐浩[2,3] LIU Zhaozhao;HUANG Shenfa;TANG Hao(Shanghai Textile Architectural Design Research Institute,Shanghai 200060;Shanghai Academy of Environmental Science,Shanghai 200233;School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240)

机构地区：[1]上海纺织建筑设计研究院,上海200060 [2]上海市环境科学研究院,上海200233 [3]上海交通大学农业与生物学院,上海200240

出　　处：《环境污染与防治》2018年第8期866-869,874,共5页Environmental Pollution & Control

基　　金：国家公益性行业(农业)科研专项(No.200903056);崇明岛土壤环境调查评估及生态修复技术研究与示范项目(崇明区环境保护局土壤专项)

摘　　要：采用自然土壤人工染毒法,模拟2、10mg/kg的汞污染土壤,选用苎麻作为修复植物,研究蚯蚓活动对苎麻修复汞污染土壤效果的影响。结果表明,添加蚯蚓能显著提高苎麻地上部分对汞的富集效果,最大提升效果分别为59.34%和33.69%。同时也发现,接种蚯蚓使苎麻对汞的富集系数提升效果明显,最大分别达到0.340和0.160,但是对转运系数的影响并不明显。此外,苎麻在生长中期对汞有较快的富集速率,在生长前期和末期对汞的富集速率较慢。最后,提出了汞污染土壤修复的研究建议。Through natural soil artificial exposure method,the effect of earthworm activity on the remediation of Hg contaminated soil under 2 mg/kg and 10 mg/kg by Boehmeria nivea was studied.The results showed that:Hg enrichment by the aerial parts of Boehmeria nivea was significantly improved by adding earthworms,the maximum lifting effect was 59.34%and 33.69%.The enrichment coefficient of the Boehmeria nivea was significantly improved at the same time,reached 0.340 and 0.160,but adding earthworms had little effect on transfer coefficient;Boehmeria nivea had a faster enrichment rate in middle growth stage.Finally the Hg contaminated soil phytoremediation research suggestions were put forward.

关 键 词：苎麻 蚯蚓 汞污染土壤 植物修复 

分 类 号：X17[环境科学与工程—环境科学] X53