{"title":"Uncovering Soil Heavy Metal Pollution Hotspots and Influencing Mechanisms Through Machine Learning and Spatial Analysis","authors":"Xiaoyong Song, Yao Sun, Huijuan Wang, Xinmiao Huang, Zilin Han, Yilan Shu, Jiaheng Wu, Zhenglin Zhang, Qicheng Zhong, Rongxi Li, Zhengqiu Fan","doi":"10.1016/j.envpol.2025.125901","DOIUrl":null,"url":null,"abstract":"Soil heavy metal (HM) pollution is a significant and widespread environmental issue in China, highlighting the need to quantify influencing factors and identify priority concern areas for effective prevention and management. Based on published literature data of soil HM concentrations from 2000-2022, this study investigated the pollution characteristics and spatial distribution of eight soil HMs in China, and identified the hotspot areas of HM pollution and related influencing factors. The main findings were as follows: (1) The average concentrations of all eight HMs all exceeded their respective background values, with Cd (<em>I</em><sub><em>geo</em></sub>=1.41) and Hg (<em>I</em><sub><em>geo</em></sub>=0.85) showing the most serious pollution. (2) The Random forest-SHapley Additive exPlanations (RF-SHAP) model revealed that transportation and agriculture activities dominantly contribute to soil HM accumulation in China. (3) Bivariate local indicators of spatial association (LISA) based on Moran’s I identified industry and transportation activities as primary drivers of HM pollution in the Yangtze River Delta and Pearl River Delta, whereas a combination of agriculture and industry activities was the main cause of pollution in Central China. This study offers valuable insights for the control and management of soil HM pollution and provides a critical reference for shaping comprehensive policies aimed at addressing HM pollution on a regional or national scale.","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"2 1","pages":""},"PeriodicalIF":7.6000,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Pollution","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.envpol.2025.125901","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Soil heavy metal (HM) pollution is a significant and widespread environmental issue in China, highlighting the need to quantify influencing factors and identify priority concern areas for effective prevention and management. Based on published literature data of soil HM concentrations from 2000-2022, this study investigated the pollution characteristics and spatial distribution of eight soil HMs in China, and identified the hotspot areas of HM pollution and related influencing factors. The main findings were as follows: (1) The average concentrations of all eight HMs all exceeded their respective background values, with Cd (Igeo=1.41) and Hg (Igeo=0.85) showing the most serious pollution. (2) The Random forest-SHapley Additive exPlanations (RF-SHAP) model revealed that transportation and agriculture activities dominantly contribute to soil HM accumulation in China. (3) Bivariate local indicators of spatial association (LISA) based on Moran’s I identified industry and transportation activities as primary drivers of HM pollution in the Yangtze River Delta and Pearl River Delta, whereas a combination of agriculture and industry activities was the main cause of pollution in Central China. This study offers valuable insights for the control and management of soil HM pollution and provides a critical reference for shaping comprehensive policies aimed at addressing HM pollution on a regional or national scale.
期刊介绍：
Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health.
Subject areas include, but are not limited to:
• Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies;
• Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change;
• Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects;
• Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects;
• Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest;
• New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
