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Analysis of Heavy Metal Pollution in Cultivated Land of Different Quality Grades in Yangtze River Delta of China

Author

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  • Hua Wang

    (Zhejiang University of Finance and Economics Dongfang College, Haining 314408, China
    School of Earth Sciences and Engineering, Hohai University, Nanjing 211110, China)

  • Wuyan Li

    (Zhejiang University of Finance & Economics, Hangzhou 310018, China)

  • Congmou Zhu

    (Institute of Agriculture Remote Sensing and Information Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China)

  • Xiaobo Tang

    (Zhejiang University of Finance and Economics Dongfang College, Haining 314408, China)

Abstract

The distribution of heavy metal pollution in cultivated land is closely related to the quality of the cultivated land. In this study, 533 soil samples were collected from cultivated land in the Yangtze River delta region in China for Cd, Pb, and Hg analyses. Spatial statistical analysis was used to study the heavy metal pollution in the cultivated land, and the driving forces of heavy metal distribution in different cultivated land quality subdivisions were analyzed with GeogDetector. The conclusions are as follows: (1) Among the three heavy metals in the study area, the coefficient of variation of Cd is the largest, and that of Pb is the smallest. The proportion of Cd and Hg exceeding the standard value (the standard of level two in GB 15618—2018) is relatively large, both of which are 5%; (2) From the perspective of the spatial distribution of soil heavy metal pollution, only four counties (CX, HN, WY, and LH) were free of heavy metal pollution. Soil heavy metal pollution in AJ, SY, QJ, and DS counties is relatively serious, and the pollution may come from agricultural activities, manufacturing, and prevalent coastal shipping industries in these counties; (3) The heavy metal pollution levels of cultivated land with different quality levels are different. The high-quality cultivated land has no high contamination, while the medium and the general cultivated land both have high contamination. High contamination is related to Cd for medium and general cultivated lands, and to Hg in only general cultivated land; (4) The main driving factors of heavy metal concentration in cultivated soil were GDP, followed by soil organic matter, and pH. These results indicate that the spatial distribution of heavy metal concentration in cultivated soil was affected by the level of economic development, followed by the ecological environment, indicating that human activities had a critical impact on the ecological environment of cultivated land.

Suggested Citation

  • Hua Wang & Wuyan Li & Congmou Zhu & Xiaobo Tang, 2021. "Analysis of Heavy Metal Pollution in Cultivated Land of Different Quality Grades in Yangtze River Delta of China," IJERPH, MDPI, vol. 18(18), pages 1-17, September.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:18:p:9876-:d:639148
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    References listed on IDEAS

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    1. Weiwei Guo & Tao Wu & Guojun Jiang & Lijie Pu & Jianzhen Zhang & Fei Xu & Hongmei Yu & Xuefeng Xie, 2021. "Spatial Distribution, Environmental Risk and Safe Utilization Zoning of Soil Heavy Metals in Farmland, Subtropical China," Land, MDPI, vol. 10(6), pages 1-13, May.
    2. Shuangmei Tong & Hairong Li & Li Wang & Muyesaier Tudi & Linsheng Yang, 2020. "Concentration, Spatial Distribution, Contamination Degree and Human Health Risk Assessment of Heavy Metals in Urban Soils across China between 2003 and 2019—A Systematic Review," IJERPH, MDPI, vol. 17(9), pages 1-22, April.
    3. Bifeng Hu & Ruiying Zhao & Songchao Chen & Yue Zhou & Bin Jin & Yan Li & Zhou Shi, 2018. "Heavy Metal Pollution Delineation Based on Uncertainty in a Coastal Industrial City in the Yangtze River Delta, China," IJERPH, MDPI, vol. 15(4), pages 1-13, April.
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    Cited by:

    1. Fengqiang Wu & Caijian Mo & Xiaojun Dai & Hongmei Li, 2022. "Spatial Analysis of Cultivated Land Productivity, Site Condition and Cultivated Land Health at County Scale," IJERPH, MDPI, vol. 19(19), pages 1-20, September.
    2. Wenhao Yang & Wenwen Luo & Tong Sun & Yingming Xu & Yuebing Sun, 2022. "Adsorption Performance of Cd(II) by Chitosan-Fe 3 O 4 -Modified Fish Bone Char," IJERPH, MDPI, vol. 19(3), pages 1-14, January.
    3. Xiangling Zhang & Yan Li & Genmei Wang & Huanchao Zhang & Ruisi Yu & Ning Li & Jiexiang Zheng & Ye Yu, 2022. "Soil Quality Assessment in Farmland of a Rapidly Industrializing Area in the Yangtze Delta, China," IJERPH, MDPI, vol. 19(19), pages 1-16, October.
    4. Xigui Li & Qing Wu & Yujie Liu, 2023. "Spatiotemporal Changes of Cultivated Land System Health Based on PSR-VOR Model—A Case Study of the Two Lake Plains, China," IJERPH, MDPI, vol. 20(2), pages 1-28, January.

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