生态环境学报2018，Vol.27Issue(6)：1167-1172,6.DOI:10.16258/j.cnki.1674-5906.2018.06.023
3种基因型芹菜修复DDT老化污染农田土壤初探
Study on Remediation Aged DDT Contaminated Farmland Soil by Three Genotypes of Celery
摘要
Abstract
In this study, we selected a greenhouse as the experimental site which contained 2 levels DDTs contaminated [low concentration: (46.0±2.8) μg·kg-1and high concentration: (72.2±3.0) μg·kg-1] and explored on the remediation effects of 3 celery species (Apium graveolens Linn, Rubrum apium and Libanotis seseloides Turcz). After 90 days, GC-ECD method was used for the analyzed of DDT, the results showed that all the celery had certain remediation effect, the Apium graveolens with the highest DDT degradation rate of 48.8% and 39.41%, respectively. The response of Rubrum apium was more stable, the degradation rate was 33.96% and 35.14%, respectively. The difference in 2 concentrations levels were significant with ANOVA analysis (P＜0.05). The DDT in underground part was higher than the above-ground. The PPO activity in rhizosphere soil of Libanotis seseloides Turcz was the highest, and the INV activity in rhizosphere soil of the Apium graveolen was the highest. With the Pearson correlation coefficient, INV activity could be set as a microecological index during the remediation process. In addition, Rubrum apium have a strong ability of up-take DDT although with a high concentration, so it is a valuable research that the maximum tolerance of the Rubrum apium. Apium graveolens has the ability of low enrichment and the highest DDT degradation which is positive to be used in phytoremediation, so it has great potential in the future.关键词
芹菜/滴滴涕/污染土壤/植物修复/植物富集/土壤酶Key words
celery/DDT/contaminated soil/phytoremediation/plant accumulation/soil enzymes分类
资源环境引用本文复制引用
郑学昊,孙丽娜,马欣雨,刘克斌,王辉,张鸿龄,王晓旭,桑淑婷,李福臣..3种基因型芹菜修复DDT老化污染农田土壤初探[J].生态环境学报,2018,27(6):1167-1172,6.基金项目
国家重点基础研究发展计划项目(973 计划)(2014CB441106) （973 计划）
中国博士后面上项目(2016M601333),辽宁省自然科学基金项目(20170540638) （2016M601333）
