Journal of Northern Agriculture ›› 2018, Vol. 46 ›› Issue (2): 82-82.

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Pollution evaluation of urban soil heavy metal and distribution in different functional zones of Qiqihar city

QIAO Xue,LU Hai jun,WANG Jinyu,BAI Lin,LIU Shu,JING Yan (College of Architecture and Civil Engineering,Qiqihar University, Qiqihar 161006,China)   

  • Online:2018-04-20 Published:2018-04-20

Abstract: As soil in different functional areas of Qigihar city for the research object, analysis of heavy metal pollution and study the spatial variability feature using of Arc GIS in order to provide a reference basis for the overall construction of regional development planning, comprehensive management of the environment and landscape construction and plant configuration. The results showed that Zn, Pb, Cr, As, Hg of the surface soil in that area whoso average content was not more than second level national standard and background value of province,variation of Zn, Pb, Cr were high (CV〉0.36), and Hg was at low variability; spatial of surface soils accumulated obviously. Different functional areas of heavy metals Zn, Pb, Cr, As and Hg had significant difference (P〈0.05); different function area in Qigihar city pollution order were road area〉 residential area〉commercial area〉 park area〉 urban area〉industrial area〉storage area. The spatial distribution map showed the city northwest, south and east corner of the pollution were serious, central and southeast were relatively little; Zn, Pb and As had similar spatial distribution characteristics of the high content of the southeast and little content of northwest; the content of Cr element in the southeast and northwest was high,low content Hg in northeast;element distribution was relatively special, it showing annular diffusion trend from midwest to the northeast, but the content was little. These spatial distribution characteristics were closely related to the overall urban construction activities in our city. On the whole, 5 heavy metal elements show heterogeneous patch distribution in Qigihar.

CLC Number: 

  • X53