Risk Assessment of Heavy Metal Pollution in Farmland Soil

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Soil and Plant Nutrition".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 712

Special Issue Editors


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Guest Editor
Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
Interests: environmental monitoring; assessment in agriculture and rural areas; pollution prevention and control technology

E-Mail Website
Guest Editor
Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
Interests: land use; ecosystem assessment; planning management; environmental monitoring

Special Issue Information

Dear Colleagues,

Strengthening farmland protection is a crucial guarantee for food security, sustainable agricultural development, and the quality and safety of agricultural products. The spatial distribution of heavy metals in cultivated land varies greatly. Meanwhile, with the diversified development of the social economy, there is a lack of refined prevention and control technologies and supervision methods for heavy metal pollution in farmland in different regions. This Special Issue, in response to the important mission of farmland protection, solicits the latest research manuscripts related to the entire chain of farmland protection, Source tracing, soil environment monitoring, restoration, restoration effect assessment, and supervision technology methods.
   What kind of papers are we soliciting:

  • Monitoring and risk assessment of the farmland soil environment;
  • Source tracing, remediation technology, and a model of heavy metal pollution in farmland;
  • Evaluation of the effect of farmland restoration;
  • Intelligent and information-based supervision of farmland land protection and restoration;
  • Policies for the protection and restoration management of farmland land.

Prof. Dr. Rongguang Shi
Dr. Tiantian Ma
Guest Editors

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Keywords

  • farmland protection
  • environmental monitoring
  • risk assessment restoration and governance
  • regulatory techniques and policies

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Published Papers (1 paper)

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Research

19 pages, 4271 KB  
Article
Spatial Distribution and Pollution Source Analysis of Heavy Metals in Cultivated Soil in Ningxia
by Xiang Yue, Rongguang Shi, Jianjun Ma, Hong Li, Tiantian Ma, Junhua Ma, Xiangyu Liang and Cheng Ma
Agronomy 2025, 15(11), 2543; https://doi.org/10.3390/agronomy15112543 - 31 Oct 2025
Viewed by 494
Abstract
This study collected 820 topsoil samples from cultivated lands across Ningxia, covering the Yellow River irrigation area, the central arid zone, and the southern mountainous region. The ordinary kriging were spatially interpolated to analyze As, Hg, Cd, Cr, and Pb heavy-metal pollution spatial [...] Read more.
This study collected 820 topsoil samples from cultivated lands across Ningxia, covering the Yellow River irrigation area, the central arid zone, and the southern mountainous region. The ordinary kriging were spatially interpolated to analyze As, Hg, Cd, Cr, and Pb heavy-metal pollution spatial patterns. Pollution was evaluated using the Nemerow and geoaccumulation (I(geo)) indices, and sources quantified via Pearson correlations, PCA (Principal Component Analysis), and PMF (Positive Matrix Factorization). The results indicated that Hg and Cd posed the highest ecological risks. The overall mean concentrations (mg.kg−1) of Hg, Cd, As, Pb, and Cr were 0.04, 0.27, 9.91,23.81, and 57.34, respectively. Compared with the background values, they were 1.90, 2.41, 0.83, 1.14, 2.74 times higher, respectively. Geospatially, regions with higher pollution probabilities for Cd, Cr, Pb, Hg, and As were concentrated in the northern and central parts of Ningxia, whereas the southern region exhibited lower pollution probabilities. pH significantly influenced the accumulation and spatial distribution of heavy metals in soil. Source apportionment identified three primary contributors: transportation and natural parent materials (As, Pb, Cr), industrial activities (Hg), and agricultural practices (Cd). Hg and Cd were identified as the key risk elements requiring prioritized management. These results enhance understanding of the pollution levers of heavy metals in Ningxia cultivated soils, and also provide foundation for developing more scientific and precise soil risk control policies, offering significant practical value for environmental risk management. Full article
(This article belongs to the Special Issue Risk Assessment of Heavy Metal Pollution in Farmland Soil)
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