武夷山市常见绿化树种修复重金属污染土壤的研究  

Research on Phytoremediation of Heavy Metals Contaminated Soil of Main Greening Tree Species in Wuyishan City

作　　者：李灵[1] 唐辉[2] 张玉[3] 孙梦阳[1] 

机构地区：[1]福建省生态产业绿色技术重点实验室/武夷学院生态与资源工程学院,福建武夷山354300 [2]陕西理工学院外国语学院,陕西汉中723003 [3]武夷学院土木工程与建筑学院,福建武夷山354300

出　　处：《黑龙江农业科学》2015年第12期44-49,共6页Heilongjiang Agricultural Sciences

基　　金：南平市科技局资助项目(N2009Z10-3);武夷学院对接南平产业发展专项资助项目(2011DJ08);武夷山风景名胜区管理委员会资助项目(2008-03)

摘　　要：为了筛选出不同重金属污染条件下富集较强的乔木树种,对武夷山市道路两侧土壤重金属及11种绿化树种叶片富集能力进行测定分析。结果表明:武夷山市区公路两侧土壤重金属Cu、Cr、Pb、Zn和Ni单项潜在风险系数Eri从大到小的顺序为:Pb>Cr>Cu>Ni>Zn,土壤重金属处于轻微潜在生态风险;同一树种中Cu、Cr、Pb、Zn和Ni的含量差异较大,相同元素在不同树种中的含量也存在一定差异。香樟对Pb、Ni和Zn的吸收较多,栾树对Pb、Cr和Cu的吸收量较大,深山含笑对Pb和Cu的吸收较多,四季桂对Cr和Cu吸收较多;不同树种对Cu和Zn的富集能力较强,其次是Cr,对Pb和Ni的富集能力较低。香樟对Pb和Ni的富集能力较强,深山含笑对Pb和Cu的富集能力较强,栾树对Cr和Cu的富集能力较强,四季桂对Cr的富集能力较强。武夷山市区公路两侧Pb和Cr的潜在生态风险较大,因此香樟、栾树、四季桂和深山含笑是重金属污染修复比较理想的绿化树种。The concentration of heavy metals（Cu,Cr,Pb,Zn and Ni）and the concentration capacity of plant leaves to these metals from 11 species of greening tree species in Wuyishan city were studied to figure out the arbor species with strong concentration capacity to heavy metals.The results showed that the individual Potential Ecological Risk Factor Eri of 5kinds of heavy metals was described as follows：Pb CrCuNi Zn.These heavy metals in roadside soils of Wuyishan city belonged to a light potential ecological risk.The concentrations of Cu,Cr,Pb,Zn and Ni in the same tree species have larger difference.The accumulation amounts of the same element in different tree species had certain difference.The accumulation amounts of Cinnamomumto Pb,Ni and Zn,Koelreuteriato Pb,Cr and Cu,Micheliato Pb and Cu,Osmanthus to Cr and Cu were relatively larger.The enrichment capability of heavy metals in most of the tree species was CuZnCrNiPb.The enrichment capability of Cinnamomumto Pb and Ni,Micheliato Pb and Cu,Koelreuteriato Cr and Cu,Osmanthus to Cr were relatively stronger.The potential ecological risk of Pb and Cr behaves stronger in roadside pavement soil of Wuyishan city.Cinnamomum,Koelreuteria,Osmanthus and Michelia were ideal greening tree species for phytoextraction from polluted soil in Wuyishan city.

关 键 词：土壤 绿化树种 重金属 富集能力 植物修复 武夷山市 

分 类 号：X53[环境科学与工程—环境工程] S688[农业科学—观赏园艺]