[1]DONG Hongmei,ZHAO Jingbo,SONG Yougui,et al.Characteristics and Risk Assessment of Heavy Metal Content in Soils of Apple Orchard with Different Cultivating Years in Baishui County on the Loess Plateau[J].Research of Soil and Water Conservation,2021,28(05):205-211.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 05
Page number:
205-211
Column:
Public date:
2021-08-20
- Title:
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Characteristics and Risk Assessment of Heavy Metal Content in Soils of Apple Orchard with Different Cultivating Years in Baishui County on the Loess Plateau
- Author(s):
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DONG Hongmei1,ZHAO Jingbo2,SONG Yougui3,LIU Huifang3
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(1.School of Management,Xi'an University of Science and Technology,Xi'an 710054,China; 2.School of Geography and Tourism,Shaanxi Normal University,Xi'an 710119,China; 3.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710061,China)
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- Keywords:
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soil in apple orchard; cultivating years; heavy metal content; risk assessment; Loess Plateau
- CLC:
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X825; X53
- DOI:
-
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- Abstract:
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In order to study enrichment characteristics of heavy metal elements of soils from different cultivating years apple orchard and evaluate their heavy metal pollution risk,we employed inductively coupled plasma mass spectrometry(ICP-MS)method to determine the heavy metal contents of soils of apple orchards with 5 different cultivating years(5 a,10 a,15 a,20 a,and 25 a)and soil in modern farmland from Baishui County in the Loess Plateau,and used the single-factor pollution index(Pi)and Nemerow multi-factor comprehensive index(NCI)to evaluate heavy metal pollution risk. The results show that the average contents of Cr,Ni,As,Pb,Hg in soil of farmland is higher than those in soil of apple orchard,suggesting that these heavy metal elements are more likely to be enriched in soil of farmland. The average contents of Ni,Cu,As,Hg in soil of the 25-year apple orchard are relatively higher than those of soils in the other apple orchards,indicating the accumulation of heavy metals in soil of the apple orchard increases with the increase of cultivating years. From the perspective of the comprehensive pollution index,the soil of farmland is the highest,while the index of soil in apple orchard increases with the increase of cultivating years. Pollution risk based on pollution indexes Pi and NCI suggests that the soils of the apple orchards can meet the heavy metal quality standard of pollution-free fruit and green food production.