LI Ling,TANG Hui,ZHANG Yu,et al.Research on Phytoremediation of Heavy Metals Contaminated Soil of Main Greening Tree Species in Wuyishan City[J].HEILONGJIANG AGRICULTURAL SCIENCES,2015,(12):44-49.[doi:10.11942/j.issn1002-2767.2015.12.0044]
武夷山市常见绿化树种修复重金属污染土壤的研究
- Title:
- Research on Phytoremediation of Heavy Metals Contaminated Soil of Main Greening Tree Species in Wuyishan City
- 文章编号:
- 1002-2767（2015）12-0044-06
- Keywords:
- soil; greening tree species; heavy metal; concentration capacity; phytoremediation; Wuyishan city
- 分类号:
- S731.8；X171.5；X53
- 文献标志码:
- A
- 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。
- Abstract:
- 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 5 kinds of heavy metals was described as follows: Pb> Cr>Cu>Ni > 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 Cinnamomum to Pb,Ni and Zn,Koelreuteria to Pb,Cr and Cu,Michelia to Pb and Cu,Osmanthus to Cr and Cu were relatively larger.The enrichment capability of heavy metals in most of the tree species was Cu＞Zn＞Cr＞Ni＞Pb.The enrichment capability of Cinnamomum to Pb and Ni,Michelia to Pb and Cu,Koelreuteria to 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.
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备注/Memo
收稿日期：2015-09-28