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Spatial distribution and ecological risk assessment of heavy metals in surface sediments from a typical plateau lake wetland, China
Bai, Junhong1; Cui, Baoshan1; Chen, Bin1; Zhang, Kejiang2; Deng, Wei3; Gao, Haifeng1; Xiao, Rong1
Corresponding AuthorJunhong Bai
2011-01-24
Source PublicationECOLOGICAL MODELLING
ISSN0304-3800
Volume222Issue:2Pages:301-306
SubtypeArticle
AbstractSurface sediment (0-15 cm) samples were collected from 31 different grid points throughout the Yilong Lake in April 2004. Samples were subjected to a total digestion technique and analyzed for As, Cd, Cr, Pb, Ni, Cu, and Zn in order to study spatial distribution characteristics based on Kriging method and assess their ecological risks posed by these heavy metals. Results showed that the mean concentrations of these heavy metals were lower than potential effect levels. Patches of higher heavy metal concentrations occurred in the inflow area of the Cheng River and northeast area nearby the road and railway. The higher concentrations of As and Cr also appeared in the east area (lake outlet), while the patches of lower concentrations were uniformly distributed at the southwest corner between Luosewan and Xiaoguoxi. The heavy metal loads such as As, Cd and Pb might come from the common sources due to industrial sewage and traffic pollution, while higher concentrations of Ni, Cr, and Zn in these sediments were dominated by parent rocks. However, Cu originated from both sources. Sediments with respect to As, Cd and Cu were grouped below the effect range low (ERL) at all sites, and with respect to Cr and Pb were grouped into the range from ERL to the effect range median (ERM) at more than 50% of sampling sites. The mean heavy metal toxic units in the Yilong Lake decreased following the order Pb > Cr > As > Ni > Zn > Cd > Cu, with higher contributions to the sum of toxic units of Pb, Cr and As. (C) 2009 Elsevier B.V. All rights reserved.
KeywordSurface Sediment Heavy Metals Spatial Distribution Ecological Risk Assessment
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.ecolmodel.2009.12.002
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordQUALITY GUIDELINES ; ROADSIDE SOILS ; RIVER ; CONTAMINATION ; WATER ; ECOSYSTEMS ; ESTUARY ; URANIUM ; MARINE
Language英语
WOS SubjectEcology
WOS IDWOS:000286542000011
Funding OrganizationNational Basic Research Program of China(2006CB403301) ; National Natural Science Fund(50879005 ; U0833002 ; 40701003)
Citation statistics
Cited Times:162[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5341
Collection山区发展研究中心
Affiliation1.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China
2.Univ Calgary, Ctr Environm Engn Res & Educ, Calgary, AB T2N 1N4, Canada
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Bai, Junhong,Cui, Baoshan,Chen, Bin,et al. Spatial distribution and ecological risk assessment of heavy metals in surface sediments from a typical plateau lake wetland, China[J]. ECOLOGICAL MODELLING,2011,222(2):301-306.
APA Bai, Junhong.,Cui, Baoshan.,Chen, Bin.,Zhang, Kejiang.,Deng, Wei.,...&Xiao, Rong.(2011).Spatial distribution and ecological risk assessment of heavy metals in surface sediments from a typical plateau lake wetland, China.ECOLOGICAL MODELLING,222(2),301-306.
MLA Bai, Junhong,et al."Spatial distribution and ecological risk assessment of heavy metals in surface sediments from a typical plateau lake wetland, China".ECOLOGICAL MODELLING 222.2(2011):301-306.
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