[1]ZHAO Xuan,LI Xinsheng,ZHAO Zuoping,et al.Assessment on Soil Heavy Metal Contents in Tea Plantation in Southern Shaanxi Province[J].Research of Soil and Water Conservation,2016,23(03):287-290.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 03
Page number:
287-290
Column:
Public date:
2016-06-28
- Title:
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Assessment on Soil Heavy Metal Contents in Tea Plantation in Southern Shaanxi Province
- Author(s):
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ZHAO Xuan1, LI Xinsheng1,2,3, ZHAO Zuoping1, Guowen Bo4, MI Gui1, FU Jing1,2
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1. Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China;
2. Shaanxi Key Laboratory of Bio-Resource, Hanzhong, Shaanxi 723000, China;
3. Shaanxi Province Black Organic Food Engineering Technology Research Center, Hanzhong, Shaanxi 723000, China;
4. Hanzhong Tea Industry Office, Hanzhong, Shaanxi 723000, China
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- Keywords:
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tea plantation; soil; heavy metal; assessment
- CLC:
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X53
- DOI:
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- Abstract:
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A total of 31 soil samples were colletcted in 31 tea plantations in the southern Shaanxi Province. Concentrations of heavy metals such as Cu, Cd, Cr, Zn and Ni, and the pH of soils, were measured.Single factor index, comprehensive index were used to assess the degree of heavy metal contamination, and the potential ecological risk index method was applied to evaluate the ecological risk of heavy metal contamination of soil in tea plantation. The results showed that the tea plantation soil was mainly acidic with a pH ranging from 4.32 to 6.66, the average concentrations of Cu, Cd, Cr, Zn and Ni were 23.73 mg/kg, 0.00 mg/kg, 46.79 mg/kg, 102.78 mg/kg and 35.17 mg/kg, respectively. Heavy metal concentrations in the tea plantation soil samples were all lower than the heavy metal limit values of the class Ⅱ environmental quality standard for soils in China (GB15618—1995). If the concentrations of soil heavy metals in Shaanxi Province was selected as the standard, it could be seen that the heavy metal pollution in tea plantation soil was generally low and posed low ecological risk, the soils all reached the standards of pollution-free, and most soils conformed to the organic standars.