YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室
Dynamics of plant metal uptake and metal changes in whole soil and soil particle fractions during repeated phytoextraction
Li, Zhu1,2; Wu, Longhua1; Luo, Yongming1,3; Christie, Peter4
2014
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume374Issue:1-2Pages:857-869
Contribution Rank[Li, Zhu; Wu, Longhua; Luo, Yongming] Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China; [Li, Zhu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Luo, Yongming] Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Christie, Peter] Agri Food & Biosci Inst, Agri Environm Branch, Belfast BT9 5PX, Antrim, North Ireland
AbstractPhytoextration of metal polluted soils using hyperaccumulators is a promising technology but requires long term successive cropping. This study investigated the dynamics of plant metal uptake and changes in soil metals over a long remediation time. A soil slightly polluted with metals (S1) was mixed with highly polluted soil (S4) to give two intermediate pollution levels (S2, S3). The four resulting soils were repeatedly phyto-extracted using nine successive crops of Cd/Zn-hyperaccumulator Sedum plumbizincicola over a period of 4 years. Shoot Cd concentration decreased with harvest time in all soils but shoot Zn declined in S1 only. Similar shoot Zn concentrations were found in S2, S3 and S4 although these soils differed markedly in metal availability, and their available metals decreased during phytoextraction. A possible explanation is that plant active acquisition ability served to maintain plant metal uptake. Plant uptake resulted in the largest decrease in the acid-soluble metal fraction followed by reducible metals. Oxidisable and residual fractions were less available to plants. The coarse soil particle fractions made the major contribution to metal decline overall than the fine fractions. Sedum plumbizincicola maintained long term metal uptake and the coarse soil particles played the most important role in phytoextraction.; Phytoextration of metal polluted soils using hyperaccumulators is a promising technology but requires long term successive cropping. This study investigated the dynamics of plant metal uptake and changes in soil metals over a long remediation time.
Corresponding AuthorWu, LH (reprint author), Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China. lhwu@issas.ac.cn
KeywordZinc/cadmium Hyperaccumulator Successive Cropping Particle-size Metal Availability
Subject AreaAgronomy ; Plant Sciences ; Soil Science
Funding OrganizationNational Natural Science Foundation of China [40930739]; National High-Technology Research and Development Program of China [2012AA06A204]
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Indexed BySCI
WOS KeywordTHLASPI-CAERULESCENS ; EXTRACTION PROCEDURES ; ZINC ACCUMULATION ; SEDUM-ALFREDII ; POLLUTED SOILS ; HEAVY-METALS ; CADMIUM ; RHIZOSPHERE ; ZN ; AVAILABILITY
SubtypeArticle
Language英语
Funding Project中国科学院海岸带环境过程与生态修复重点实验室
WOS Research AreaAgriculture ; Plant Sciences
WOS IDWOS:000328849200064
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/6923
Collection中科院海岸带环境过程与生态修复重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
4.Agri Food & Biosci Inst, Agri Environm Branch, Belfast BT9 5PX, Antrim, North Ireland
Recommended Citation
GB/T 7714
Li, Zhu,Wu, Longhua,Luo, Yongming,et al. Dynamics of plant metal uptake and metal changes in whole soil and soil particle fractions during repeated phytoextraction[J]. PLANT AND SOIL,2014,374(1-2):857-869.
APA Li, Zhu,Wu, Longhua,Luo, Yongming,&Christie, Peter.(2014).Dynamics of plant metal uptake and metal changes in whole soil and soil particle fractions during repeated phytoextraction.PLANT AND SOIL,374(1-2),857-869.
MLA Li, Zhu,et al."Dynamics of plant metal uptake and metal changes in whole soil and soil particle fractions during repeated phytoextraction".PLANT AND SOIL 374.1-2(2014):857-869.
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