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[1]CHEN Weifeng,SUN Qi Yuan,SONG Xi Liang,et al.Distribution and Ecological Risk Assessment of Heavy Metal Elements in Soils of Green Spaces at Different Urban Functional Areas[J].Research of Soil and Water Conservation,2019,26(03):148-153.

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Distribution and Ecological Risk Assessment of Heavy Metal Elements in Soils of Green Spaces at Different Urban Functional Areas

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 03 Page number: 148-153 Column: Public date: 2019-04-12

Title:: Distribution and Ecological Risk Assessment of Heavy Metal Elements in Soils of Green Spaces at Different Urban Functional Areas

Author(s):: CHEN Weifeng, SUN Qi Yuan, SONG Xi Liang, DONG Yuan Jie; College of Resources and Environment, Shandong Agricultural University, Tai’an, Shandong 271018, China

Keywords:: urban functional areas; green space soil; heavy metal; ecological risk assessment

CLC:: X53

DOI:: -

Abstract:: The contents of four heavy metal elements (Cu, Zn, Pb and Cd) in 64 soil samples of green spaces from 9 urban functional areas in a typical city of central Shandong Province were measured to analyze and evaluate both the pollution characteristics and ecological risk of soil heavy metals. The results showed that:(1) the average contents of Cu, Zn, Pb and Cd in soils of green spaces at each urban functional area were higher than the background values in local soils under natural vegetation; at the same time, those heavy metal elements exhibited an enrichment state and the average content of Cd exceeded the standard seriously; (2) the most polluted soils of green spaces were found in the industrial area, scenic area, business district and residence community, respectively; (3) based on the single factor pollution assessment, Cu, Zn and Pb in soils of the city green spaces were in a potential pollution state while Cd was in a heavy pollution state; (4) according to the research of comprehensive pollution evaluation, the green spaces at medium pollution level were industrial green space, business district green space, scenic area and residence community green space, respectively; in addition, the seedling production area and road green space were close to the medium pollution level; (5) the potential ecological hazard assessment showed that the soils in study city were in slight ecological risk, but the Cd potential ecological risk index had been in medium ecological risk; (6) the relationship between Cu and Zn, Cu and Cd, Pb and Cd were significant, and the correlations between Cu and Pb, Zn and Cd were extremely significant. The combined pollution phenomenon found in different heavy metal elements indicated that those heavy metal elements may have the same pollutant source. In the end, more attentions should be paid to the prevention of Cd pollution in soils of green spaces in the study city.

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