污泥还林土壤砷污染的本土植物修复研究  

Study on local phytoremediation of arsenic pollution in soil from sludge reforestation

作　　者：任悦 周伟松 何国富[1] 杨春懿 杨根森 顾佳艳 胡元树 REN Yue;ZHOU Weisong;HE Guofu;YANG Chunyi;YANG Gensen;GU Jiayan;HU Yuanshu(School of Environmental and Ecological Sciences,East China Normal University,Shanghai 200241,China;Shanghai Chongming District Water Bureau,Shanghai 202150,China)

机构地区：[1]华东师范大学生态与环境科学学院,上海200241 [2]上海市崇明区水务局,上海202150

出　　处：《华东师范大学学报（自然科学版）》2022年第6期150-156,共7页Journal of East China Normal University(Natural Science)

摘　　要：上海市某林地土壤的重金属砷超标后,选择芦苇、水杉两种本土植物进行了修复,且跟踪监测了土壤在植物修复前后各项指标的变化情况.结果表明:(1)芦苇和水杉两种植物根际区土壤的砷含量与非根际区相比分别减少了52.4%、28.6%,且非根际区土壤的砷含量均低于土壤环境风险筛选值;(2)研究比较了芦苇和水杉的根际微生态特性后发现,水杉对养分的富集效果优于芦苇,证明在土壤肥力恢复方面选择水杉进行修复效果会更好.Exploring the remediation effect of native plants on soil contaminated with heavy metals has significant value for real-world applications.In this study,two native plants—reed and metasequoia—were selected for remediation of heavy metal arsenic in the soil of a woodland in Shanghai,and changes in soil indexes before and after phytoremediation were monitored.The results showed that:(1)The arsenic content in rhizosphere soil of Ph.australis and Metasequoia was52.4%and 28.6%lower,respectively,than the arsenic content in non-rhizosphere soil.The arsenic content in non-rhizosphere soil,moreover,was lower than the screening value for soil environmental risk.(2)After comparing the microecological characteristics of rhizosphere between reed and metasequoia,it was found that metasequoia had a better nutrient enrichment effect than reed,demonstrating that metasequoia would have a better restoration effect in terms of soil fertility.

关 键 词：重金属 污染等级 植物修复 修复效果 

分 类 号：X53[环境科学与工程—环境工程]