| 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. |
| 轻度锌污染土壤植物修复效果研究 |
| Study on phytoremediation effect of mildly zinc contaminated soil |
| 投稿时间：2024-04-24 |
| DOI：10.11654/jaes.2024-0353 |
| 中文关键词: 土壤重金属污染 锌污染 植物修复 富集转运 |
| 英文关键词: soil heavy metal pollution zinc pollution phytoremediation enrichment and transport |
| 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 |
| 作者 | 单位 | E-mail | | 张瑞瑞 | 华东师范大学生态与环境科学学院, 上海市城市化生态过程与生态恢复重点实验室, 上海 200241 | | | 顾佳艳 | 华东师范大学生态与环境科学学院, 上海市城市化生态过程与生态恢复重点实验室, 上海 200241 | | | 何国富 | 华东师范大学生态与环境科学学院, 上海市城市化生态过程与生态恢复重点实验室, 上海 200241
崇明生态研究院, 上海 200062
上海有机固废生物转化工程技术研究中心, 上海 200241 | gfhe@des.ecnu.edu.cn | | 陈潇楠 | 华东师范大学生态与环境科学学院, 上海市城市化生态过程与生态恢复重点实验室, 上海 200241 | | | 郭林睿 | 华东师范大学生态与环境科学学院, 上海市城市化生态过程与生态恢复重点实验室, 上海 200241 | | | 薛文瑾 | 华东师范大学生态与环境科学学院, 上海市城市化生态过程与生态恢复重点实验室, 上海 200241 | | | 杨春懿 | 华东师范大学生态与环境科学学院, 上海市城市化生态过程与生态恢复重点实验室, 上海 200241 | |
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| 中文摘要: |
| 为探究不同植物组合对锌（Zn）污染土壤的修复效果，本研究以上海某轻度Zn污染地块为研究对象，选取水杉、五节芒、黑麦草和芦苇4种植物，开展为期1 a的Zn污染土壤植物组合修复工程，连续监测土壤的pH值、电导率（EC值）、锌全量、有效态锌、有机质、有效磷、速效钾、全氮，草本植物地上及地下部分Zn含量，评估各植物组合的修复效果，筛选出修复效果最佳的植物组合，为同类型土壤Zn污染的植物修复提供参考。结果表明：各地块全Zn去除率为8.89%~26.24%，表明所选组合植物修复效果良好，适用于长江河口区域的重金属Zn污染修复；水杉+黑麦草组合全Zn去除率最高（26.24%），且前期去除率（16.10%）高于水杉整个修复周期的去除率（14.77%），该组合修复效果最佳；草本植物黑麦草富集能力最强，富集系数为2.02，其体内Zn含量显著高于五节芒及芦苇（P<0.05），具备稳定吸收锌Zn的能力，属于根部囤积型植物；乔木水杉维持土壤肥力能力较好，在植物组合修复中有助于土壤肥力的改善，对Zn污染植物修复工程的持续具有重要意义。 |
| 英文摘要: |
| 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. |
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