Fang et al. (2025) The applications of radiocesium-137 to soil redistribution and related studies in NE China: a review

Identification

• Journal: Soil and Tillage Research
• Year: 2025
• Date: 2025-09-18
• Authors: Haiyan Fang, А. П. Жидкин
• DOI: 10.1016/j.still.2025.106865

Research Groups

• Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
• College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
• V.V. Dokuchaev Soil Science Institute, Moscow, Russia

Short Summary

This review systematically analyzes the applications of radiocesium-137 (137Cs) in soil redistribution studies in Northeastern China, identifying key research areas and future needs, including the necessity for alternative radionuclides due to 137Cs decay.

Objective

• To systematically review the achievements of 137Cs-derived studies in Northeastern China concerning soil erosion and related issues, and to identify future research needs and implications.

Study Configuration

• Spatial Scale: Northeastern China
• Temporal Scale: Applications of 137Cs since the 1960s, with fallout from the 1950s–1970s. The review covers literature up to the present.

Methodology and Data

• Models used: Not applicable (review paper); however, future studies are recommended to couple 137Cs techniques with soil erosion models.
• Data sources: Scientific literature (81 papers reviewed).

Main Results

• Over 60% of the 81 reviewed papers focused on soil erosion and associated soil organic carbon and nutrient loss.
• Over 25% of the papers were dedicated to sedimentation dating, with only a few employing 137Cs as a fingerprinting tracer.
• Due to its decay and short half-life, 137Cs inventories will become difficult to detect after approximately 50 years.
• Radionuclides 239+240Pu and Np are identified as potential replacements for 137Cs in soil erosion estimation due to their longer half-lives and similar soil transport behavior.
• Future research should explore sedimentation information in various water bodies using 137Cs and other tracers, integrate 137Cs techniques with soil erosion models under changing land use and climate, and expand studies to larger spatial scales.

Contributions

• Provides the first systematic analysis of 137Cs applications specifically for soil redistribution and related studies in Northeastern China.
• Identifies the dominant research themes and gaps in 137Cs-based studies within the region.
• Highlights the impending limitations of 137Cs due to radioactive decay and proposes alternative radionuclides (239+240Pu, Np) for future soil erosion assessments.
• Outlines critical future research directions, including model coupling, expanded spatial scales, and utilization of sedimentation archives.

Funding

• Not specified in the provided text.

Citation

@article{Fang2025applications,
  author = {Fang, Haiyan and Жидкин, А. П.},
  title = {The applications of radiocesium-137 to soil redistribution and related studies in NE China: a review},
  journal = {Soil and Tillage Research},
  year = {2025},
  doi = {10.1016/j.still.2025.106865},
  url = {https://doi.org/10.1016/j.still.2025.106865}
}