Metal(loid) Source Apportionment and Spatial Drivers in Irrigated Terrace Soils in a Typical Pb-Zn Mining Area.

IF 2.2 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Bulletin of Environmental Contamination and Toxicology Pub Date : 2025-09-04 DOI:10.1007/s00128-025-04110-0

Peiyu Zhang, Xinyang Li, Jiawen Zhou, Wenyong Wang, Tong Zhou, Changyin Tan, Longhua Wu, Peter Christie

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Abstract

Metal(loid) contamination levels and the factors governing metal(loid) accumulation patterns in terraced agricultural systems were studied using 1250 surface (0-20 cm depth) soil samples. The average concentrations of Cr, Ni, Cu, As, Cd, Pb, and Zn were 132, 62.3, 140, 42.2, 33.8, 535, and 2384 mg kg^-1, respectively. Correlation analysis (CA) and positive matrix factorization (PMF) modeling were conducted to identify the sources of the metal(loid)s and the forest regression algorithm was used to elucidate the factors influencing their spatial differentiation. Cr and Ni originated mainly from natural soil-forming processes and As, Cd, Pb, and Zn originated from irrigation water. Cu, As, Cd, Pb, and Zn were controlled by source-related factors, and the distance to a residential area (Dis-RE) was the most significant covariate for these five elements. The results provide insights into the identification of the sources and clarification of the diffusion of metal(loid)s in similar mining regions.

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典型铅锌矿区灌溉梯田土壤金属（样）源解析及空间驱动因素

利用1250个表层（0 ~ 20 cm）土壤样品，研究了梯田农业系统中金属（样）污染水平和控制金属（样）积累模式的因素。Cr、Ni、Cu、As、Cd、Pb和Zn的平均浓度分别为132、62.3、140、42.2、33.8、535和2384 mg kg-1。利用相关分析（CA）和正矩阵分解（PMF）模型确定了金属样物质的来源，并利用森林回归算法阐明了影响金属样物质空间分异的因素。Cr、Ni主要来源于自然成土过程，As、Cd、Pb、Zn主要来源于灌溉水。Cu、As、Cd、Pb和Zn受源相关因素控制，其中与居民区的距离（Dis-RE）是影响这5种元素的最显著协变量。研究结果对确定金属（样）化物的来源和澄清类似矿区金属（样）化物的扩散具有重要意义。

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来源期刊

Bulletin of Environmental Contamination and Toxicology 环境科学-毒理学

CiteScore

5.60

自引率

3.70%

发文量

230

审稿时长

1.7 months

期刊介绍： The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.