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Geostatistical analyses and co-occurrence correlations of heavy metals distribution with various types of land use within a watershed in eastern QingHai-Tibet Plateau, China
Dai, LJ (Dai, Lijun)1; Wang, LQ (Wang, Lingqing)1,2; Liang, T (Liang, Tao)1,2; Zhang, YY (Zhang, Yongyong)1,2; Li, J (Li, Jing)1,2; Xiao, J (Xiao, Jun)3; Dong, LL (Dong, Linlin)4; Zhang, HD (Zhang, Haidong)4
2019-02-25
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume653Pages:849-859
Contribution Rank3
AbstractDue to increasing anthropogenic disturbance, various pollutants have been frequently detected in QingHai-Tibet Plateau, where the environment is extremely fragile and sensitive to human activities. In this study, 51 sampling siteswith different land coverswere selected in a sub-basin in theHuangshui watershed in eastern QingHai-Tibet Plateau. A total of 102 soil samples were collected at surface (0-20 cm) and subsurface (20-40 cm) depths for studying on heavy metal pollution in this region. The relationships between land cover types and spatial distribution of five heavy metals Cr, Cu, Cd, Pb, and Zn were systematically analyzed combing field survey, remotesensing database, and geostatistical methods. The relationships between soil physiochemical properties and heavy metals were assessed by geostatistics, co-occurrence network analysis and geographically weighted regression (GWR) model. The results indicated that the average concentrations of all five heavy metals in soil were higher than the local background values, indicating the influence of anthropogenic inputs of these elements into environment. Strong positive correlations were observed between some heavy metals and soil physicchemical properties in different land covers, combinedwith the geoaccumulation index, human activities contribution can be interpolated. The Cr and Zn in surface soils are explainers for Cr and Zn in subsurface soils in the GWRmodels respectively, as well as the area of different land cover. Cd contamination was specifically analyzed due to its degree of contamination and then the sources of Cd were identified such as energy production as well as chemical fertilizers. The results of this study can provide basic data for long-termaccumulation of heavymetals in soils under different land uses in QingHai-Tibet Plateau.
KeywordHeavy metal Co-occurrence network Geostatistics Geographically weighted regression Soil
Indexed BySCI ; SCIE
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10947
Collection加速器质谱中心
Corresponding AuthorWang, LQ (Wang, Lingqing)
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China;
4.Suzhou Acad Agr Sci, Suzhou 215155, Peoples R China
Recommended Citation
GB/T 7714
Dai, LJ ,Wang, LQ ,Liang, T ,et al. Geostatistical analyses and co-occurrence correlations of heavy metals distribution with various types of land use within a watershed in eastern QingHai-Tibet Plateau, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,653:849-859.
APA Dai, LJ .,Wang, LQ .,Liang, T .,Zhang, YY .,Li, J .,...&Zhang, HD .(2019).Geostatistical analyses and co-occurrence correlations of heavy metals distribution with various types of land use within a watershed in eastern QingHai-Tibet Plateau, China.SCIENCE OF THE TOTAL ENVIRONMENT,653,849-859.
MLA Dai, LJ ,et al."Geostatistical analyses and co-occurrence correlations of heavy metals distribution with various types of land use within a watershed in eastern QingHai-Tibet Plateau, China".SCIENCE OF THE TOTAL ENVIRONMENT 653(2019):849-859.
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