Evidence map›Paper›PMID 40253497›Full record

ArticleScientific reports2025

Application of machine learning in soil heavy metals pollution assessment in the southeastern Tibetan plateau.

Yan Li, Yilong Yu, Shiyuan Ding, Wenjing Dai, Rongguang Shi, Gaoyang Cui, Xiaodong Li

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Yan LiInstitute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China.
Yilong YuAgro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300170, China.
Shiyuan DingInstitute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China. dingshiyuan@tju.edu.cn.
Wenjing DaiInstitute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China.
Rongguang ShiAgro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300170, China. shirongguang@caas.cn.
Gaoyang CuiThe College of Geography and Environmental Science, Henan University, Kaifeng, 475004, Henan, China.
Xiaodong LiInstitute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China.

Funding

Key Research and Development Program of Ningxia 2023BEG01002the National Natural Science Foundation of China 42473071the Natural Science Foundation of Henan 222300420128
6 · The paper itself

Abstract

The Tibetan Plateau, a globally significant ecological region, is experiencing escalating pollution from heavy metals (HMs). This study applies a machine learning approach based on the self-organizing map hyper-clustering, alongside advanced methodologies such as Positive Matrix Factorization (PMF), Incremental Spatial Autocorrelation, and Bivariate Local Indicators of Spatial Association (BiLISA), to analyze the ecological risk of soil HMs in representative watersheds of the southeastern Tibetan Plateau, focusing on spatial pattern clustering, pollutant source identification, and interaction risk assessment. The results indicated higher HMs concentrations in the middle and downstream areas. A comprehensive ecological risk assessment integrating the Improved Potential Ecological Risk Index, Enrichment Factor, Contamination Factor, and Geo-accumulation Index identified Cd, Pb, and As as the primary pollutants of concern. By combining PMF with Mantel analysis, pollution was attributed to geological background, agricultural activities, traffic emissions, and atmospheric deposition. The BiLISA method revealed significant spatial interactions among HMs, with the composite pollution of As and Cd occupying the largest proportion in High (As)-High (Cd) aggregation zones, underscoring the need for integrated management strategies. This study offers novel insights into the spatial pollution patterns and source apportionment of soil HMs, providing an advanced analytical framework for their precise control and ecological restoration.

Indexed as

BiLISA analysisHMs sourceImproved Potential Ecological Risk IndexInteraction riskSelf-Organizing map

Identifiers

PMID40253497
PMCPMC12009381

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.