[1]XU Xingbin,JIAO Li,WANG Yonghui.Risk Evaluation and Correlation Analysis of Soil Heavy Metal Contamination in Xiaerxili Nature Reserve[J].Research of Soil and Water Conservation,2015,22(05):336-341.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 05
Page number:
336-341
Column:
Public date:
2015-10-28
- Title:
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Risk Evaluation and Correlation Analysis of Soil Heavy Metal Contamination in Xiaerxili Nature Reserve
- Author(s):
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XU Xingbin1,2,3, JIAO Li1,2, WANG Yonghui1,2
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1. Xinjiang Laboratory of Lake Environment and Resources in Arid Zone, Urumqi 830054, China;
2. College of Geography and Tourism, Xinjiang Normal University, Urumqi 830054, China;
3. College of Resources and Environment, Lanzhou University, Lanzhou 730000, China
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- Keywords:
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Xiaerxili nature reserve; heavy metal; contamination evaluation; correlation analysis
- CLC:
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X53
- DOI:
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- Abstract:
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To explore the status and correlation of soil heavy metal contamination in Xiaerxili nature reserve, the stationing and sampling were carried out in this research following an S-line along the mountain road. Based on field sample data and experimental data, the heavy metal contamination of soil in Xiaerxili nature reserve was evaluated and analyzed through single factor contamination index method and potential ecological risk index method. The result showed that extractable metal contents in Xiaerxili nature reserve exceeded the first-level evaluation standard according to soil environment quality standard (GB15618—1995). The exceeding standard ratios of Ni, Cr were zero; the exceeding standard ratios of Pb, Zn, Co, Cu were 65%, 50%, 60% and 85%, respectively; the exceeding ratios of Hg and As were 90% and 100%, respectively. The order of potential ecological risk index of the above 8 heavy metal elements is Hg > As > Cu > Pb > Co > Ni > Cr > Zn,among which the following pairs of elements were positively correlated: Zn—Ni, Cu—Pb, Co—Cu (tested at the 0.05 significant level);Zn—Pb, Cr—Ni, Co—Pb, Co—Zn (tested at 0.05 significant level). These elements shared high homology. Extractable metal contents were mainly connected with the parent material with relatively small human disturbance. There was low or no correlation between Hg and As for any other elements.