SOIL HEAVY METAL POLLUTION AND ECOLOGICAL RISK ASSESSMENT OF URBAN GREEN LAND UNDER DIFFERENT MANAGEMENT METHODS

MENG Tingting; LIU Jinbao; DONG Hao; WANG Bo; ZHANG Guojian

doi:10.13205/j.hjgc.202212029

Volume 40 Issue 12

Nov. 2022

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MENG Tingting, LIU Jinbao, DONG Hao, WANG Bo, ZHANG Guojian. SOIL HEAVY METAL POLLUTION AND ECOLOGICAL RISK ASSESSMENT OF URBAN GREEN LAND UNDER DIFFERENT MANAGEMENT METHODS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 217-223. doi: 10.13205/j.hjgc.202212029

Citation:

MENG Tingting, LIU Jinbao, DONG Hao, WANG Bo, ZHANG Guojian. SOIL HEAVY METAL POLLUTION AND ECOLOGICAL RISK ASSESSMENT OF URBAN GREEN LAND UNDER DIFFERENT MANAGEMENT METHODS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 217-223. doi: 10.13205/j.hjgc.202212029

Citation:

MENG Tingting, LIU Jinbao, DONG Hao, WANG Bo, ZHANG Guojian. SOIL HEAVY METAL POLLUTION AND ECOLOGICAL RISK ASSESSMENT OF URBAN GREEN LAND UNDER DIFFERENT MANAGEMENT METHODS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 217-223. doi: 10.13205/j.hjgc.202212029

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SOIL HEAVY METAL POLLUTION AND ECOLOGICAL RISK ASSESSMENT OF URBAN GREEN LAND UNDER DIFFERENT MANAGEMENT METHODS

doi: 10.13205/j.hjgc.202212029

MENG Tingting^1,2,4,
LIU Jinbao^{1,2,3,4
,
,},
DONG Hao^1,2,4,
WANG Bo^1,2,4,
ZHANG Guojian¹

1. Shaanxi Provincial Land Engineering Construction Group Co., Ltd, Xi'an 710075, China;
2. Institute of Shaanxi Land Engineering and Technology Co., Ltd, Xi'an 710075, China;
3. Xi'an University of Technology, Xi'an 710048, China;
4. Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources, Xi'an 710075, China

Received Date: 2021-07-15
Available Online: 2023-03-23

Abstract

Abstract

Treatment of heavy metal pollution in urban ecological environment becomes an urgent environmental problem. In order to explore the difference of remediation effect of heavy metal pollution in urban green space under different management measures, experimental plots with different management methods were established as the research object, and soil samples were collected to determine the contents of Cr, Ni, Cu, Zn, As, Cd and Pb in soil. The quantitative analysis of soil heavy metal pollution and ecological risk under different management methods by combining the single factor pollution index method, the Nemerow comprehensive pollution index, the geo-accumulation index method and the potential ecological risk assessment method. The results showed: 1) the contents of Cr, Ni, Cu, Zn, As, Cd and Pb in soil under different management methods were higher than the background value of Shaanxi Province. The contents of heavy metals in soil under different management methods were in an order of natural growth > irrigation > fertilization; 2) the variation trend of heavy metal content with the increase of soil depth was gradually decreasing, or first decreasing and then increasing, and the minimum value was obtained at the depth of 20 to 40 cm; 3) Cd was the main element causing ecological risk in the region, which is in light pollution state but with highest pollution level. Irrigation and fertilization have better remediation effect on soil heavy metal pollution than natural growth. Reasonable layout of urban green space management measures is conducive to the remediation of soil heavy metal pollution in urban green space and improvement of urban ecological environment quality.
- urban green land,
- soil remediation,
- heavy metal pollution,
- ecological risk,
- regulative measure

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References(28)

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