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Quantifying the dual role of river network density in cadmium accumulation from mining area (source) to agricultural soil (sink) and implications for mitigation strategies

文献类型：期刊论文

作者Ma, Hongxi1,2,3; Tao, Huan1,2,3; Li, You1,2,3; Wulijia, Bayier1,2,3; Yao, Qixing1,2,3; Liao, Xiaoyong1,2,3
刊名JOURNAL OF HAZARDOUS MATERIALS
出版日期2026-01-15
卷号502页码:140608
关键词River network density Mining activities Interaction mechanism Threshold effect Geographical zoning control
ISSN号0304-3894
DOI10.1016/j.jhazmat.2025.140608
产权排序1
文献子类Article
英文摘要Cadmium (Cd) contamination in croplands, often exacerbated by mining-polluted irrigation water, is a global environmental challenge. However, the role of river networks in modulating Cd transport and accumulation remains poorly understood, hindering targeted remediation. This study aims to bridge this gap by developing a novel basin-specific control framework that integrates pollution classification with river network zoning. We systematically compared the driving mechanisms of Cd contamination across different basin types using machine learning and modeling approaches on an extensive soil dataset. We innovatively quantified the interaction between mining activities and river network density (RD) and the critical RD thresholds. Our key finding reveals the dual role of RD, where dispersion at moderate levels (0.28-0.83 km/km(2)) mitigates Cd contamination, whereas retention (at RD < 0.28 km/km(2)) and flood irrigation (at RD > 0.83 km/km(2)) exacerbate Cd accumulation. Guided by these critical thresholds, we delineated regulatory zones and proposed tailored strategies within the risk-control basins. For Tier I croplands, source interception measures are recommended to curb Cd dispersion. For Tier II croplands, maintaining river connectivity and timely removal of sediments are essential. This RD-based framework offers a theoretical and practical tool for precise agricultural soil protection in mining-affected basins.
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WOS关键词HEAVY-METALS ; SPATIAL-DISTRIBUTION ; POLLUTION ; CONTAMINATION ; SEDIMENTS ; WATER
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001633076600001
出版者ELSEVIER
源URL[http://ir.igsnrr.ac.cn/handle/311030/219472]  
专题陆地表层格局与模拟院重点实验室_外文论文
通讯作者Tao, Huan; Liao, Xiaoyong
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China;
3.Beijing Key Lab Environm Damage Assessment & Remed, Beijing 100101, Peoples R China;
推荐引用方式
GB/T 7714		 Ma, Hongxi,Tao, Huan,Li, You,et al. Quantifying the dual role of river network density in cadmium accumulation from mining area (source) to agricultural soil (sink) and implications for mitigation strategies[J]. JOURNAL OF HAZARDOUS MATERIALS,2026,502:140608.
APA Ma, Hongxi,Tao, Huan,Li, You,Wulijia, Bayier,Yao, Qixing,&Liao, Xiaoyong.(2026).Quantifying the dual role of river network density in cadmium accumulation from mining area (source) to agricultural soil (sink) and implications for mitigation strategies.JOURNAL OF HAZARDOUS MATERIALS,502,140608.
MLA Ma, Hongxi,et al."Quantifying the dual role of river network density in cadmium accumulation from mining area (source) to agricultural soil (sink) and implications for mitigation strategies".JOURNAL OF HAZARDOUS MATERIALS 502(2026):140608.

入库方式： OAI收割

来源：地理科学与资源研究所

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