4种植物对重金属铅、镉和砷污染土壤的修复作用.pdf

文档介绍：400 第三届全国农业环境科学学术研讨会论文集 2009年10月
4 种植物对重金属铅、镉和砷污染土壤的修复
作用
钟珍梅 1,王义祥 1,杨冬雪 2,黄毅斌 1*
(,福建福州 350013; , 福建福州 350003)

摘要:通过盆栽试验从野生和栽培的植物中筛选具有吸收重金属 Cd、As 和 Pb 修复重金属污染土壤的超富集植物,
结果表明重金属 Cd、As 和 Pb 处理对所选的 4 种植物的株高均无显著影响,但显著降低皱叶狗尾草和百喜草的生物
量,As 胁迫显著降低辣蓼的生物量。4 种植物地上部重金属含量均未超过临界指标含量,辣蓼地下部 Cd 含量、香根
草地下部 Pb 含量和皱叶狗尾草地下部 Pb 含量超过临界指标含量,具有修复污染土壤的潜能。
关键词:富集植物;重金属污染土壤;生物量;吸收

Phytoremediation by Four Kinds of Plants to Soils Contaminated by Heavy Mental Lead,Cadmium and
Arsenic.
ZHONG Zhen-mei1, WHANG Yi-xiang1, YANG Dong-xue2, HUANG Yi-bin1
( Ecology Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
environmental monitoring central station, Fuzhou 350003, China)
Abstract:A pot experiment was develop to screen umulator which can extract heavy metal lead,cadmium and arsenic
from contaminated soils in the wild and cultivated plants. The experiment showed that the height of four plants hadn’t be
significant affected by heavy metals, however the biomass of winkledleaf bristlegrass and bahia grass was decreased significantly,
the biomass of polygonum hydropiperl had the same result by arsenic. The heavy metal content of four plants above-ground part
didn’t exceed critical values, however there of lead in under-ground part of winkledleaf bristlegrass and vetiver grass and that of
cadmium