几种观赏花卉对土壤铅的吸收特性和抗性能力研究  

Pb-endurance and Accumulative Characteristics of Several Varieties of Ornamental Flowers

作　　者：崔爽[1] 周启星[2,3] 李萍[1] 赵杉林[4] 黄璐[1] 

机构地区：[1]辽宁石油化工大学环境与生物工程学院,辽宁抚顺113001 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [3]南开大学环境科学与工程学院,天津370001 [4]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《江西科学》2009年第1期157-160,共4页Jiangxi Science

基　　金：辽宁省教育厅项目(2008T112);国家重点基础研究发展规划项目(2004CB418503);辽宁石油化工大学校科技基金

摘　　要：本实验研究花卉在铅污染条件下对铅的吸收特性及其对铅的抗性,积累铅毒害作用资料,为铅污染环境的净化和景观化提供材料。结果表明三种观赏花卉中波斯菊(Cosmos bipinnatus)地上部吸收富集铅的量最大,积累铅能力最强,其次为翠珠花(Trachymene coerulea),香石竹(Dianthus caryophyllus)吸收积累铅能力最弱;根部铅富集量最大的为波斯菊,其次为香石竹,翠珠花根部铅吸收积累能力最弱。在Pb浓度为1 000 mgkg-1时,铅污染可以刺激波斯菊和翠珠花生长,使其根部和地上部的生物量增加,这两种花卉对铅污染的抗性很强,但铅污染会显著抑制香石竹的生长,香石竹对铅污染的抗性很差。In order to enrich data of Pb toxicity, purify and beautify Pb - contaminated environment, three ornamental flowers were screened to determine their absorbing characteristics for Pb and their endurable characteristics by pot-culture experiment. The results showed Cosmos bipinnatus had a stronger capability of accumulating Pb in shoot than Trachymene coerulea and Dianthus caryophyllus,which had the weakest accumulating ability. Cosmos bipinnatus accumulated more Pb in root than Dianthus caryophyllus and Trachymene coerulea, which accumulated the lowest Pb. Cosmos bipinnatus and Trachymene coerulea exhibited stronger endurance to Pb,however,Pb contamination significantly inhibited Dianthus caryophyllus development,which exhibited the weakest enduring ability.

关 键 词：花卉 铅 植物修复 

分 类 号：X171[环境科学与工程—环境科学]