Combining Soil Immobilization and Dressing Techniques for Sustaining the Health of Metal-Contaminated Arable Soils

Jung-Hwan Yoon, Chan-Gyu Lee, Byung-Jun Park, Seok Soon Jeong, Young Don Lee, Mary Beth Kirkham, Kwon-Rae Kim, Jae E. Yang, Yong-Ha Park, Sung Chul Kim and Hyuck Soo Kim ()
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Jung-Hwan Yoon: Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea
Chan-Gyu Lee: Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea
Byung-Jun Park: Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea
Seok Soon Jeong: Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea
Young Don Lee: Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea
Mary Beth Kirkham: Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA
Kwon-Rae Kim: Department of Smart Agro-Industry, Gyeongsang National University, Jinju 52725, Republic of Korea
Jae E. Yang: Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea
Yong-Ha Park: Korea Environment Institute, Sejong 30147, Republic of Korea
Sung Chul Kim: Department of Biological Environmental Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
Hyuck Soo Kim: Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea

Sustainability, 2024, vol. 16, issue 8, 1-16

Abstract: The combination of lime immobilization of metals and soil dressing has been a prevalent practice in Korea for remediating metal-contaminated arable soils. However, there have been limited reports on whether this method effectively sustains soil health after remediation, particularly in arable soils. This study undertook a comparative assessment of the soil health index (SHI) across metal-contaminated arable lands, arable soils remediated with lime immobilization and soil dressing, and uncontaminated soils. A total 389 soil samples were collected from these sites and analyzed for nineteen indicators encompassing physical, chemical, and biological properties. To assess soil health, these indicators were screened using principal component analysis, yielding five minimum data set (MDS) indicators: total nitrogen, clay content, dehydrogenase activity, bacterial colony-forming units, and available phosphorus. Among these MDS indicators, total nitrogen exhibited the highest value as the principal component contributing to soil health assessment. Scores of the MDS indicators exhibited significant correlation with those of total data set indicators, affirming the appropriateness of the soil health assessment adopted in this study. The SHI of the remediated arable soils (0.48) surpassed those of the contaminated soils (0.47) and were statistically comparable to those of the uncontaminated forest (0.51) and upland (0.51) soils. The health of the contaminated soils demonstrated a high dependence on soil properties rather than metal concentrations. These findings underscore the robustness of the combined immobilization and soil dressing method for sustaining the health of contaminated arable soils post-remediation.

Keywords: soil health; metal contamination; immobilization; soil dressing (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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