农业环境科学学报2025，Vol.44Issue(4)：952-963,12.DOI:10.11654/jaes.2024-0353
轻度锌污染土壤植物修复效果研究
Study on phytoremediation effect of mildly zinc contaminated soil
摘要
Abstract
This study aimed to evaluate the efficacy of various plant combinations in remediating zinc(Zn)-contaminated soil.In a mildly Zn-affected site in Shanghai,metasequoia,pentacanthus awn,ryegrass,and reed were cultivated,followed by a year-long experimental remediation using these plant assemblages.Throughout the study,we conducted continuous surveillance of key soil parameters,including pH,electrical conductivity(EC),total and available Zn,organic matter,available phosphorus,potassium,nitrogen,and the Zn content in both the above-and underground parts of the plants,so as to evaluate the remediation effect of each plant combination,and screen out the plant combinations with the best repair effect.This paper serves as a reference for phytoremediation initiatives targeting similar Zn-contaminated soils.The findings of this research are as follows:the total Zn removal rates achieved were 8.89％～26.24％,demonstrating the selected combinations' promising phytoremediation potential,particularly for addressing heavy metal Zn contamination in the Yangtze River Delta.The removal rate of total Zn in metasequoia+ryegrass was the highest(26.24％),and the removal rate in the early stage(16.10％)was higher than that in the whole restoration cycle(14.77％),this pairing exhibited superior remediation performance,the most efficient repair dynamics,and the swiftest remediation timeline.Ryegrass exhibited the most potent enrichment capacity with a bioconcentration factor of 2.02,significantly outperforming pentacanthus awn and reeds in Zn uptake(P＜0.05),indicating its robust and stable ability to absorb Zn and its classification as a root-accumulating species.The indigenous metasequoia displayed commendable soil fertility maintenance capabilities,contributing significantly to enhanced soil fertility during the combined plant remediation process,and holds profound importance for the remediation of analogous enduring Zn pollution scenarios.关键词
土壤重金属污染/锌污染/植物修复/富集转运Key words
soil heavy metal pollution/zinc pollution/phytoremediation/enrichment and transport分类
环境科学引用本文复制引用
张瑞瑞,顾佳艳,何国富,陈潇楠,郭林睿,薛文瑾,杨春懿..轻度锌污染土壤植物修复效果研究[J].农业环境科学学报,2025,44(4):952-963,12.基金项目
崇明长兴镇桔林小镇及郊野公园水系沟通工程疏浚底泥堆放例行监测重金属锌超标植物修复跟踪监测项目 Chongming Changxing Town Jilin Town and Country Park Water System Communication Project Dredged Sediment Pile Routine Monitoring Heavy Metal Zinc Excessive Phytoremediation Tracking Monitoring Project （）
