WANG Wendong, BAI Zhiqiang, LIU Duan, et al. Assessment of Soil Heavy Metal Pollution and Its Potential Ecological Risk in Kanas Scenic Area[J]. Bulletin of Soiland Water Conservation, 2018, 38(6): 352-357.
DOI:
WANG Wendong, BAI Zhiqiang, LIU Duan, et al. Assessment of Soil Heavy Metal Pollution and Its Potential Ecological Risk in Kanas Scenic Area[J]. Bulletin of Soiland Water Conservation, 2018, 38(6): 352-357. DOI: 10.13961/j.cnki.stbctb.2018.06.053.
Assessment of Soil Heavy Metal Pollution and Its Potential Ecological Risk in Kanas Scenic Area
[Objective] The heavy metal pollution and potential ecological risk of soil in Kanas scenic area were evaluated to provide reference for scientific management and protection of scenic area resources.[Methods] The Kanas area was used as the study area to determine As
Pb
Hg
Cd
Zn
Cr
and Cu contents of soil samples
through the pollution load index. A comprehensive evaluation of the heavy metal pollution in the Kanas area was conducted. The potential ecological risk index was used to evaluate the potential ecological risk of heavy metals in the soil. The correlation analysis and principal component analysis were used to analyze the heavy metal sources and pollution levels.[Results] ① The average contents of As
Pb
Hg
Cd
Zn
Cr and Cu in the surface soil of the study area were 6.48
16.60
0.10
0.08
84.71
2.47 and 32.23 mg.kg-1
respectively
of which As
Pb
Hg and Cd were high. The soil background values in Xinjiang area
Zn
Cr and Cu are lower than the soil background values in Xinjiang area. ② The human activities were different from the 7 kinds of heavy metals
their contents were different. ③ Hg was a heavy pollution in a extremely strong disturbance plot of human activities
a strong disturbance plot of human activities
and a slight disturbance plot of human activity(PLI values are 5.70
4.36
and 4.64 respectively). And Zn
Cr and and Cuwere slightly polluted. All metal RIs were less than 150. There was only a slight ecological hazard in the study area
but Hg pollution in the study area needed more attention. ④ Correlation analysis showed that most of the 7 heavy metals had a relationship. The sources of Cd and Hg are the same and the source of As
Zn and Cu may be the same.[Conclusions] The Kanas scenic area interferes with the accumulation of heavy metals in the soil by tourism activities
and the heavy metal pollution in the soil is more serious.
关键词
Keywords
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