Soil metal contamination poses potential risks

The gap

Evidence profile

Sourced from the abstract and stated challenges and stated research gap and limitations section and conclusions of the source papers, classified as general, spanning 6 journals.

Supporting evidence — 6 representative gaps

• Chemical Dynamics of Heavy Metal Translocation and Phytoaccumulation Paradoxes in Highly Leached, Acidic Xanthic Ferralsols of Fendall, Liberia (2026) · bioRxiv · doi

  Heavy metal contamination in soil systems is an escalating global crisis, yet over 55% of urban agriculture literature focuses on high-tech indoor vertical farming, leaving vulnerable open-field tropical urban agriculture (UPA) severely under-researched.

  generalabstractevidence 5/5
  Keywords: urban agriculture heavy metal contamination soil systems escalating global crisis literature focuses high tech indoor
• Variation in the morphological characters, essential oil content and composition of Mentha arvensis L. grown in zinc enriched soils (2026) · Discover Chemistry · doi

  High concentrations of zinc can cause growth inhibition and oxidative stress. Zinc contamination in soil is a significant environmental hazard. There is a need to develop strategies for safe utilization of zinc-contaminated soils.

  generalstated challengesevidence 5/5
  Keywords: high concentrations zinc cause growth inhibition oxidative stress
• Integrated assessment of heavy metal contamination and dietary health risks in mining soil-crop systems using the IICQ: a case study of maize in Luanchuan, China (2026) · Environmental Geochemistry and Health · doi

  There is a lack of systematic assessments of heavy metal contamination in both soils and crops from mining-affected regions. There is a need to consider population-specific dietary risks in food safety assessments.

  generalstated research gapevidence 5/5
  Keywords: there lack systematic assessments heavy metal contamination both
• From Soil Amendment to Fruit Quality: Evidence and Uncertainties in Organic Amendment-Driven Regulation of the Rhizosphere Microbiome in Fruit Tree Systems (2026) · Agriculture · doi

  Most underlying mechanisms remain hypothetical. The generalizability of these findings to other tree species and soil conditions remains to be verified. Incompletely composted materials pose risks of pathogen and heavy metal contamination. Long-term application of swine manure may lead to cadmium and zinc accumulation.

  generallimitations sectionevidence 5/5
  Keywords: underlying mechanisms remain hypothetical generalizability findings other tree
• Differential morphological, physiological, and antioxidant responses of Allium cepa and Allium sativum to untreated municipal wastewater (2026) · Scientific Reports · doi

  These findings support cautious wastewater reuse and highlight the need for further studies on tissue metal accumulation, soil effects, and long-term food-safety implications.

  generalconclusionsevidence 4/5
  Keywords: support cautious wastewater reuse highlight need further tissue metal accumulation soil effects long term food
• Variation in Soil Metals, Metalloids and Bacterial Communities in Chinese Alligator Habitat Across Different Functional Zone and Soil Depth (2026) · Soil Systems · doi

  Soil metal contamination poses potential risks to ecosystem health, yet its vertical distribution and impacts on microbial communities in protected wildlife habitats remain poorly understood.

  generalabstractevidence 2/5
  Keywords: soil metal contamination poses potential risks ecosystem health vertical distribution impacts microbial communities protected wildlife

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