Distribution and Source Appointment of Potentially Toxic Elements in Rivers via Self-Organizing Map and Positive Matrix Factorization (Qinghai-Tibet Plateau, China)
文献类型：期刊论文
| 作者 | Cai, Na2; Wang, Xueping1,5; Liu, Xiaoyang4; Deng, Li3 |
| 刊名 | WATER
 |
| 出版日期 | 2025-08-28 |
| 卷号 | 17期号:17页码:2547 |
| 关键词 | Qinghai-Tibet plateau self-organizing map positive matrix factorization potentially toxic elements Qarhan Salt Lake potential ecological risk |
| DOI | 10.3390/w17172547 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | The fragile ecological environment of the Qinghai-Tibet Plateau (QTP) is significantly affected by human activities. This study employed a self-organizing map (SOM) for cluster analysis and positive matrix factorization (PMF) to trace the source of potentially toxic elements (PTEs) in the surface water of rivers. The results revealed that the average concentration of PTEs in the rivers was generally low. However, at some sampling points, especially in areas near the Qarhan Salt Lake, the content of Cu, Hg, and Ni were high. The water quality index (WQI), contamination factor (CF), and modified contamination index (mCd) identified good water quality, while potential Ni in the Quanji and Golmud River basins were the primary contaminants of concern. The potential ecological risk index (PERI) showed a low ecological risk. The SOM yielded four clusters of water PTEs, including Hg, Cu-Ni, Pb-Cd-Zn, and As. PMF model further revealed PTE sources, with industrial sources (39.73%) as the primary anthropogenic factor, followed by natural weathering (33.44%), vehicle emissions (21.52%), and atmospheric deposition (5.31%). This study laid the foundation for the ecological monitoring of rivers on the QTP and provided a reference for balancing industrial development and ecological protection in Qarhan Salt Lake areas. |
| URL标识 | 查看原文 |
| WOS关键词 | HEAVY-METALS ; TRACE-ELEMENTS ; IDENTIFICATION ; SEDIMENTS ; MERCURY ; WATER ; SOIL |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001569511600001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/216065]  |
| 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 | Cai, Na; Liu, Xiaoyang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; 2.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Peoples R China; 3.Qinghai Prov Dept Ecol & Environm, Xining 810007, Peoples R China 4.Minist Ecol & Environm, Tech Ctr Soil Agr & Rural Ecol & Environm, Beijing 100101, Peoples R China; 5.Changan Univ, Sch Water & Environm, Xian 710054, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Cai, Na,Wang, Xueping,Liu, Xiaoyang,et al. Distribution and Source Appointment of Potentially Toxic Elements in Rivers via Self-Organizing Map and Positive Matrix Factorization (Qinghai-Tibet Plateau, China)[J]. WATER,2025,17(17):2547. |
| APA | Cai, Na,Wang, Xueping,Liu, Xiaoyang,&Deng, Li.(2025).Distribution and Source Appointment of Potentially Toxic Elements in Rivers via Self-Organizing Map and Positive Matrix Factorization (Qinghai-Tibet Plateau, China).WATER,17(17),2547. |
| MLA | Cai, Na,et al."Distribution and Source Appointment of Potentially Toxic Elements in Rivers via Self-Organizing Map and Positive Matrix Factorization (Qinghai-Tibet Plateau, China)".WATER 17.17(2025):2547. |
入库方式： OAI收割
来源：地理科学与资源研究所
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