TITLE

甜菜与牧草间作对多环芳烃污染土壤的修复作用

AUTHOR(S)
王娇娇; 呼世斌; 魏丽琼; 柴琴琴; 刘晋波; 王佳颖; 杨文晓
PUB. DATE
June 2016
SOURCE
Journal of Agro-Environment Science;2016, Vol. 35 Issue 6, p1090
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A pot experiment was conducted to investigate removal mechanisms and remediation efficiencies of polycyclic aromatic hydrocarbons(PAHs) under beet and grass intercropping systems in a greenhouse. Representative PAHs, phenanthrene, fluoranthene, pyrene and benzo(a) pyrene, were used, and four plant species, cash crops(beet) and gramineae(ryegrass, sudangrass and vetiver grass) selected. The experiment lasted 180 days and two harvests were performed. Plants grew normal at initial concentrations of phenanthrene(101.23±6.63) mg·kg-1, fluoranthene(99.79±4.21) mg·kg-1, pyrene(105.41±4.59) mg·kg-1 and benzo(a) pyrene(50.12±7.75) mg·kg-1. The efficiencies of PAHs removal were greater in treatments with plants than in no-plant control, and higher in beet-grass intercropping than in single cropping. The reduction of PAHs was 84.85%, 84.11%, and 79.96% for beet-ryegrass, beet-vetiver grass and beet-sudangrass, respectively. Beet plants grew even better when intercropped with other plants in contaminated soil. Soil polyphenol oxidase and catalase activities were enhanced by growing plants, with 4.37%~43.07% higher activities in intercropping system than in single-cropping system. Catalase was relatively more sensitive than polyphenol oxidase to soil pollution, which may serve as an indicator to evaluate the risk of polycyclic aromatic hydrocarbon contaminated soil. Therefore, the present results suggest that grasses and beet intercropping is a feasible technique for phytoremediating PAHs contaminated soils.
ACCESSION #
118016649

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics