生态学报2017，Vol.37Issue(14)：4656-4662,7.DOI:10.5846/stxb201604050618
滨海盐渍土壤中不同类型盐生植物富集镉的效应
Effects of different types of halophytes on the concentration of cadmium in coastal saline soil
摘要
Abstract
In order to utilize saline soil polluted with Cd in the coastal region,the experiment was conducted to analyze the differences in accumulation of Cd by three types of halophytes and to determine the effectiveness of the different halophytes in the remediation of saline soils polluted with Cd.The study was conducted using pot experiments in a greenhouse,and salt accumulating,salt secreting,and salt avoiding plants were used as the study subjects.The halophytes were planted with supplies of salt and Cd,and the bioconcentration factor,translocation factor,biomass,and Cd content of the above ground parts and the root were investigated after 60 days of culture.The results indicated that different Cd contents in the soil had little effect on the growth of Suaeda glauca and Phragmites australis,but had a greater influence on the growth of Limonium bicolor.The variation of the Cd concentration factor in the aboveground parts of Phragmites australis was not significant,and the percentage of Cd uptake in the aboveground part was higher.The translocation factor in S.glauca and P.australis was greater than that in L.bicolor;the translocation factor in S.glauca did not change significantly with the change in Cd contents in the soil,but it increased greatly in L.bicolor.Among the three types of halophytes,S.glauca had the highest potential to remediate coastal saline soil polluted with Cd,which may be related to the physiological type of this halophyte as salt accumulating plant.Among the three types of halophytes,P.australis accumulated the highest total amount of Cd in the aboveground parts.Therefore,P.australis can be used to remediate soils that have lower Cd levels.关键词
滨海盐渍土壤/盐生植物/镉/富集Key words
coastal saline soil/halophytes/cadmium/concentration引用本文复制引用
弋良朋,王祖伟..滨海盐渍土壤中不同类型盐生植物富集镉的效应[J].生态学报,2017,37(14):4656-4662,7.基金项目
国家自然科学基金项目(40940010,40973078) （40940010,40973078）
