| After having been digested,the samples were determined by flame atomic absorption spectrophotometry. And the data were analysed used SPSS, Origin, Excel.Through the study on characteristics of heavy metal migration in soil-plant system of Datong Wetland restoration area and Panyi mine restoration area, the following co-nclusions can be drawn:(1) Available K in soil from Datong Wetland restoration area and Panyi restoration area is rich, which is more than moderate nutritional status; And the nutritional status of soil organic matter in these two places is 0-1 level.(2) In Datong Wetland restoration area, the coefficient of variations used to meas-ure spatial uniformity of heavy metals, from large to small respectively are Cu, Zn, Ni, Cr, Pb and Cd, while in Panyi restoration area are Pb, Ni, Cr, Cd, Zn and Cu.(3) In study area, the distributions of Cu, Zn, Ni, Pb, Cr and Cd in different plants species show different, even the same species in different environmental conditions al-so show different.(4)In Datong Wetland restoration area soil, concentrations of Zn and Cu, Pb and Cr, Pb and Ni, available K and Ni, organic matter and Ni, organic matter and available K, repectively are significantly correlate(p<0.01), while concentrations of Cr and Cu, Cd and Cu, Cd and Cr, organic matter and Cu repectively are signifycantly correlate (p< 0.05).(5) In Datong Wetland restoration area, enrichment factors of Zn and Cu,Ni and Cr in plants roots repectively are significantly positively correlate (p≤0.01), while enrich-ent factors of Cd and Pb are significantly negatively correlate (p≤0.01); In Datong We-tland restoration area, enrichment factors of Ni and Cu, Cd and Cr in plants roots repe-ctively are significantly positively correlate(p<0.05), while enrichment factors of Cd and Pb are significantly negatively correlate(p≤0.01); Except enrichment factor of Cu in roots is positively with available K in soil, the enrichment factors of the other five kinds of heavy metals in roots are negatively correlated with available K in soil. Exce-pt enrichment factor of Pb in roots is positively with organic matter in soil, the enrich-ment factors of the other five kinds of heavy metals in roots are negatively correlated with organic matter in soil. In Datong Wetland restoration area, enrichment factors of Zn and Pb, Cd and Cr in plants stems repectively are significantly positively correlate (p<0.01), while enrich-ent factors of Ni and Zn are significantly negatively correlate (p<0.01); In Datong Wetland restoration area, enrichment factors of Ni and Cu, Cd and Cr in plants stems repectively are significantly positively correlate (p<0.05);Except enrichment factor of Cu,Zn, Pb in stems repectively are positively with available K in soil, the enrichment factors of the other three kinds of heavy metals in stems repectively are negatively cor-related with available K in soil. Except enrichment factor of Cu, Cd in stems repective-ly are negatively with organic matter in soil, the enrichment factors of the other four kinds of heavy metals in stems are positively correlated with organic matter in soil.In Datong Wetland restoration area, enrichment factors of Ni and Cr in plant leaves repectively are significantly positively correlate (p<0.01), at the same time enrichment factors of Zn and Cu are significantly positively correlate (p<0.05), enrichment factors of Cd and Pb are negatively positively correlate (p<0.05); Except enrichment factor of Pb in leaves is positively with available K in soil, the enrichment factors of the other five kinds of heavy metals in leaves repectively are negatively correlated with availa-ble K in soil; enrichment factor of Ni in leaves is positively correlate with organic mat-ter in soil (p<0.05); Except enrichment factor of Cu, Cr, Cd in leaves repectively are negatively with organic matter in soil, the enrichment factors of the other three kinds of heavy metals in leaves are positively correlate with organic matter in soil.(6) In Panyi restoration area soil, concentrations of Zn and Cu, Cr and Cu, Cr and Zn, organic matter and Cu, organic matter and Ni repectively are significantly correl-ate (p<0.01), while concentrations of Cu and available K, Cr and available K, Ni and available K repectively are signifycantly correlate (p<0.05). Except concentration of Cd, Concentrations of the other five kinds of heavy metals in soil are positively corr-elate with available K in soil; Except concentration of Cu, Concentrations of the other five kinds of heavy metals in soil are negatively correlate with available K in soil.(7) In Panyi restoration area, enrichment factors of Cr and Cu, Ni and Cr, on the Cr and Cd, Ni and Cd in plants roots repectively are significantly positively correlate (p< 0.01); enrichment factors of Ni and Cu in roots are significantly positively correlate (p<0.05),while enrichment factors of Cd in roots and available K in soil are significan- tly negatively correlate (p<0.05):Except enrichment factor of Zn in roots is positively with available K in soil, the enrichment factors of the other five kinds of heavy metals in roots are negatively correlated with available K in soil. Except enrichment factor of Zn, Cu in roots repectively are negatively with organic matter in soil, the enrichment factors of the other four kinds of heavy metals in roots are positively correlated with organic matter in soil.In Panyi restoration area, enrichment factors of Cr and Zn,Cd and Ni in plants stems repectively are significantly positively correlate (p<0.01), while enrichment factors of Cr and Cu, Zn and Cu repectively are significantly negatively correlate (p≤0.05); In Panyi restoration area, Except enrichment factor of Zn in stems are positively with available K in soil, the enrichment factors of the other five kinds of heavy metals in stems repectively are negatively correlated with available K in soil. Except enrichment factor of Cu, Zn in stems repectively are negatively with organic matter in soil, the enrichment factors of the other four kinds of heavy metals in stems are positively correlated with organic matter in soil.In Panyi restoration area, enrichment factors of Zn and Cu, Zn and Cr in plant lea-ves repectively are significantly positively correlate (p≤0.01), at the same time enrich-ment factors of Cu and Cr are significantly positively correlate (p<0.05).In Panyi restoration area, Except enrichment factor of Zn in leaves are positively with available K in soil, the enrichment factors of the other five kinds of heavy metals in stems repectively are negatively correlated with available K in soil. Except enriche-nt factor of Ni in leaves are positively with organic matter in soil, the enrichment fact-ors of the other five kinds of heavy metals in leaves are negatively correlate with orga-nic matter in soil.Figures [49] Tables [38] References [72]... |
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