{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T18:42:47Z","timestamp":1785436967677,"version":"3.56.0"},"reference-count":70,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T00:00:00Z","timestamp":1782086400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007846","name":"Yunnan Provincial Department of Education","doi-asserted-by":"publisher","award":["2024J0752"],"award-info":[{"award-number":["2024J0752"]}],"id":[{"id":"10.13039\/501100007846","id-type":"DOI","asserted-by":"publisher"}]},{"award":["2024J0752"],"award-info":[{"award-number":["2024J0752"]}],"id":[{"id":"https:\/\/ror.org\/02yrxdp92","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Yunnan Fundamental Research Projects","award":["202501AU070093"],"award-info":[{"award-number":["202501AU070093"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Toxics"],"abstract":"<jats:p>Heavy metal(loid) pollution in watersheds surrounding mining areas originates from multiple and complex sources, posing persistent threats to terrestrial\u2013aquatic ecosystems and human dietary safety. This study systematically investigated the pollution characteristics, spatial distribution, ecological risks and human health hazards of seven typical heavy metal(loid)s (As, Pb, Cr, Cd, Cu, Zn, and Ni) in the integrated water\u2013soil\u2013vegetable continuum of a mining-affected watershed in Southwest China. Field sampling was carried out in three functional zones with different mining disturbance intensities, and inductively coupled plasma mass spectrometry (ICP-MS) was used to detect heavy metal(loid) concentrations in all samples. Multiple pollution evaluation indices and the USEPA human health risk assessment model were adopted for comprehensive quantitative analysis. The results showed that 44.0% of surface water samples exceeded national permissible limits, with high-pollution areas concentrated in intensive mining zones, presenting moderate overall aquatic heavy metal(loid) pollution. Although the average concentrations of seven heavy metal(loid)s in riparian soils complied with Chinese agricultural soil screening standards, localized significant enrichment was observed for As (1.98 times), Cd (4.62 times), Cu (1.81 times), and Zn (2.72 times) compared with regional background values, causing mild comprehensive soil pollution. Farmland soils exhibited prominent Cu and Zn accumulation, and leafy vegetables in the study area suffered severe Pb and Cd pollution, with potential dietary exposure risks. Health risk assessment indicated that children face higher non-carcinogenic and carcinogenic risks than adults via soil hand-to-mouth exposure; dietary intake of vegetables leads to moderate carcinogenic risks for children caused by As and Ni exposure. Overall, this study clarifies the migration and enrichment rules of heavy metal(loid)s in the water\u2013soil\u2013vegetable system of mining watersheds, confirms the prominent ecological and human health risks of Cd, As and Pb in the study area, and provides targeted basic data for regional heavy metal(loid) pollution prevention and food safety management.<\/jats:p>","DOI":"10.3390\/toxics14060539","type":"journal-article","created":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T03:09:17Z","timestamp":1782270557000},"page":"539","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Heavy Metal(loid) Pollution Characteristics and Risk Assessment in the Water\u2013Soil\u2013Vegetable System of a Watershed in Southwest China"],"prefix":"10.3390","volume":"14","author":[{"given":"Mengying","family":"Li","sequence":"first","affiliation":[{"name":"Open Education College, Yunnan Open University, Kunming 650023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinjie","family":"Zhao","sequence":"additional","affiliation":[{"name":"Open Education College, Yunnan Open University, Kunming 650023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenjing","family":"Shen","sequence":"additional","affiliation":[{"name":"Open Education College, Yunnan Open University, Kunming 650023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Duanyang","family":"Yuan","sequence":"additional","affiliation":[{"name":"Open Education College, Yunnan Open University, Kunming 650023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengchen","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0870-8551","authenticated-orcid":false,"given":"Ping","family":"Xiang","sequence":"additional","affiliation":[{"name":"Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming 650224, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"012007","DOI":"10.1088\/1755-1315\/493\/1\/012007","article-title":"Impact of Anthropogenic Activity and Lusi-Mud Volcano on Fish Biodiversity at the Brantas Delta, Indonesia","volume":"493","author":"Risjani","year":"2020","journal-title":"IOP Conf. 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