Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions
A comprehensive understanding of cadmium (Cd) migration in soils near contaminated hotspots is crucial for optimizing remediation efforts and ensuring crop health. This study investigates agricultural soils from four sites in mining and sewage-irrigation areas, assessing the impact of inorganic and...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651325000351 |
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| author | Zhong Zhuang Hao Qi Siyu Huang Qiqi Wang Yanan Wan Huafen Li |
| author_facet | Zhong Zhuang Hao Qi Siyu Huang Qiqi Wang Yanan Wan Huafen Li |
| author_sort | Zhong Zhuang |
| collection | DOAJ |
| description | A comprehensive understanding of cadmium (Cd) migration in soils near contaminated hotspots is crucial for optimizing remediation efforts and ensuring crop health. This study investigates agricultural soils from four sites in mining and sewage-irrigation areas, assessing the impact of inorganic and organic fertilizer application on soil Cd remobilization. Results revealed that fertilization, particularly with mineral phosphorus, disrupts soil stability, substantially increases short-term Cd mobility in vulnerable regions. Random Forest analysis identified elevated dissolved organic matter and pH changes as key drivers of Cd remobilization. Monte Carlo simulation, integrating Michaelis-Menten reaction kinetics model, further accessed the potential risk of Cd remobilization. The model predicted that the probabilities of grain exceeding Cd thresholds ranged from 021.6 % for rice, 13.8 %100 % for wheat, and 084.2 % for maize in the absence of fertilizer use. Fertilization significantly increased these exceedance probabilities by 6.1 %87.4 %, with the highest risks observed in irrigation-contaminated soils, particularly under mineral phosphorus fertilization. Nevertheless, it recommended that while fertilization can elevate Cd remobilization risk in hotspots, remediation strategies might not always be necessary. This study highlights the potential of hybrid data-driven approaches, combining machine learning, mechanistic model and stochastic prediction to simplify the complex environmental process, allowing for integrated risk evaluations. |
| format | Article |
| id | doaj-art-bf9e8ab5f267495287cee70edfa99d96 |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-bf9e8ab5f267495287cee70edfa99d962025-01-23T05:26:09ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01289117699Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regionsZhong Zhuang0Hao Qi1Siyu Huang2Qiqi Wang3Yanan Wan4Huafen Li5Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR ChinaBeijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR ChinaBeijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR ChinaBeijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR ChinaCorresponding authors.; Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR ChinaCorresponding authors.; Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR ChinaA comprehensive understanding of cadmium (Cd) migration in soils near contaminated hotspots is crucial for optimizing remediation efforts and ensuring crop health. This study investigates agricultural soils from four sites in mining and sewage-irrigation areas, assessing the impact of inorganic and organic fertilizer application on soil Cd remobilization. Results revealed that fertilization, particularly with mineral phosphorus, disrupts soil stability, substantially increases short-term Cd mobility in vulnerable regions. Random Forest analysis identified elevated dissolved organic matter and pH changes as key drivers of Cd remobilization. Monte Carlo simulation, integrating Michaelis-Menten reaction kinetics model, further accessed the potential risk of Cd remobilization. The model predicted that the probabilities of grain exceeding Cd thresholds ranged from 021.6 % for rice, 13.8 %100 % for wheat, and 084.2 % for maize in the absence of fertilizer use. Fertilization significantly increased these exceedance probabilities by 6.1 %87.4 %, with the highest risks observed in irrigation-contaminated soils, particularly under mineral phosphorus fertilization. Nevertheless, it recommended that while fertilization can elevate Cd remobilization risk in hotspots, remediation strategies might not always be necessary. This study highlights the potential of hybrid data-driven approaches, combining machine learning, mechanistic model and stochastic prediction to simplify the complex environmental process, allowing for integrated risk evaluations.http://www.sciencedirect.com/science/article/pii/S0147651325000351Cadmium behaviorEnvironmental riskContaminated hotspotsAgronomic practices |
| spellingShingle | Zhong Zhuang Hao Qi Siyu Huang Qiqi Wang Yanan Wan Huafen Li Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions Ecotoxicology and Environmental Safety Cadmium behavior Environmental risk Contaminated hotspots Agronomic practices |
| title | Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions |
| title_full | Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions |
| title_fullStr | Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions |
| title_full_unstemmed | Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions |
| title_short | Impact of short-term soil disturbance on cadmium remobilization and associated risk in vulnerable regions |
| title_sort | impact of short term soil disturbance on cadmium remobilization and associated risk in vulnerable regions |
| topic | Cadmium behavior Environmental risk Contaminated hotspots Agronomic practices |
| url | http://www.sciencedirect.com/science/article/pii/S0147651325000351 |
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