Hedian Yan , Jiangdi Deng , Yanqun Zu , Jianjun Chen , Kai Yan , Fangdong Zhan , Tao Zhang , Bo Li , Yuan Li
{"title":"草编方格屏障提高了铅锌矿废弃地人工植物群落重金属稳定效率","authors":"Hedian Yan , Jiangdi Deng , Yanqun Zu , Jianjun Chen , Kai Yan , Fangdong Zhan , Tao Zhang , Bo Li , Yuan Li","doi":"10.1016/j.ecoleng.2025.107749","DOIUrl":null,"url":null,"abstract":"<div><div>The ecological and health risks posed by heavy metals transport via runoff and sediment from lead‑zinc mine wastelands have attracted increasing attention. While straw checkerboard barriers (SCBs) are known to mitigate soil erosion, their combined effect with artificial plant communities on controlling heavy metals migration from such sites remains unclear. To evaluate the effectiveness of straw checkerboard barriers (SCBs) and artificial plant communities in mitigating soil erosion and controlling heavy metals diffusion in lead‑zinc mine wastelands, a field runoff plot experiment was conducted. Three artificial plant community patterns (grass, shrub-grass, tree-shrub-grass) were established on the wasteland, and SCBs were integrated into each plant community patterns (grass + SCBs, shrub-grass + SCBs, tree-shrub-grass + SCBs). Surface runoff, sediment yield, and heavy metals outputs (Cd, Pb, As) were monitored to investigate synergistic effects. Results demonstrated that artificial plant communities reduced the cumulative runoff by 23.18 % ∼ 40.11 % and sediment yield by 49.55 % ∼ 75.78 % compared to the control plot across six rainfall events. Integrating SCBs further decreased runoff by 17.20 % ∼ 25.10 % and sediment yield by 39.22 % ∼ 46.30 % within the same plant community. Soil quality improved markedly after plant community establishment, with significant increases in total nitrogen, total phosphorus, total potassium, organic matter, and soil moisture content. Vegetation coverage and soil moisture also increased when SCBs were constructed within plant communities. With increasing plant diversity, cumulative losses of Cd, Pb, and As, primarily in the particulate form, decreased significantly. SCBs further improved the ability of plant communities to stabilize heavy metals, reducing Cd by 9.36 % ∼ 19.27 %, Pb by 11.99 % ∼ 17.11 %, and As by 7.45 % ∼ 35.66 %. Key factors influencing Cd, Pb, and As outputs included soil erosion, vegetation coverage, plant community pattern, and the presence of SCBs. Sediment yield was strongly correlated with heavy metals loss and was the best predictor for particulate Cd output (<em>R</em><sup>2</sup> = 0.979). In conclusion, SCBs integration improves artificial plant communities' control of surface runoff, sediment yield, and heavy metals diffusion in abandoned lead‑zinc mine sites, which creates favorable conditions for ecological restoration and long-term stabilization.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"220 ","pages":"Article 107749"},"PeriodicalIF":4.1000,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Straw checkerboard barriers enhance heavy metals stabilization efficiency of artificial plant communities in lead‑zinc mine wastelands\",\"authors\":\"Hedian Yan , Jiangdi Deng , Yanqun Zu , Jianjun Chen , Kai Yan , Fangdong Zhan , Tao Zhang , Bo Li , Yuan Li\",\"doi\":\"10.1016/j.ecoleng.2025.107749\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The ecological and health risks posed by heavy metals transport via runoff and sediment from lead‑zinc mine wastelands have attracted increasing attention. While straw checkerboard barriers (SCBs) are known to mitigate soil erosion, their combined effect with artificial plant communities on controlling heavy metals migration from such sites remains unclear. To evaluate the effectiveness of straw checkerboard barriers (SCBs) and artificial plant communities in mitigating soil erosion and controlling heavy metals diffusion in lead‑zinc mine wastelands, a field runoff plot experiment was conducted. Three artificial plant community patterns (grass, shrub-grass, tree-shrub-grass) were established on the wasteland, and SCBs were integrated into each plant community patterns (grass + SCBs, shrub-grass + SCBs, tree-shrub-grass + SCBs). Surface runoff, sediment yield, and heavy metals outputs (Cd, Pb, As) were monitored to investigate synergistic effects. Results demonstrated that artificial plant communities reduced the cumulative runoff by 23.18 % ∼ 40.11 % and sediment yield by 49.55 % ∼ 75.78 % compared to the control plot across six rainfall events. Integrating SCBs further decreased runoff by 17.20 % ∼ 25.10 % and sediment yield by 39.22 % ∼ 46.30 % within the same plant community. Soil quality improved markedly after plant community establishment, with significant increases in total nitrogen, total phosphorus, total potassium, organic matter, and soil moisture content. Vegetation coverage and soil moisture also increased when SCBs were constructed within plant communities. With increasing plant diversity, cumulative losses of Cd, Pb, and As, primarily in the particulate form, decreased significantly. SCBs further improved the ability of plant communities to stabilize heavy metals, reducing Cd by 9.36 % ∼ 19.27 %, Pb by 11.99 % ∼ 17.11 %, and As by 7.45 % ∼ 35.66 %. Key factors influencing Cd, Pb, and As outputs included soil erosion, vegetation coverage, plant community pattern, and the presence of SCBs. Sediment yield was strongly correlated with heavy metals loss and was the best predictor for particulate Cd output (<em>R</em><sup>2</sup> = 0.979). In conclusion, SCBs integration improves artificial plant communities' control of surface runoff, sediment yield, and heavy metals diffusion in abandoned lead‑zinc mine sites, which creates favorable conditions for ecological restoration and long-term stabilization.</div></div>\",\"PeriodicalId\":11490,\"journal\":{\"name\":\"Ecological Engineering\",\"volume\":\"220 \",\"pages\":\"Article 107749\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2025-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ecological Engineering\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0925857425002393\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecological Engineering","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925857425002393","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ECOLOGY","Score":null,"Total":0}
Straw checkerboard barriers enhance heavy metals stabilization efficiency of artificial plant communities in lead‑zinc mine wastelands
The ecological and health risks posed by heavy metals transport via runoff and sediment from lead‑zinc mine wastelands have attracted increasing attention. While straw checkerboard barriers (SCBs) are known to mitigate soil erosion, their combined effect with artificial plant communities on controlling heavy metals migration from such sites remains unclear. To evaluate the effectiveness of straw checkerboard barriers (SCBs) and artificial plant communities in mitigating soil erosion and controlling heavy metals diffusion in lead‑zinc mine wastelands, a field runoff plot experiment was conducted. Three artificial plant community patterns (grass, shrub-grass, tree-shrub-grass) were established on the wasteland, and SCBs were integrated into each plant community patterns (grass + SCBs, shrub-grass + SCBs, tree-shrub-grass + SCBs). Surface runoff, sediment yield, and heavy metals outputs (Cd, Pb, As) were monitored to investigate synergistic effects. Results demonstrated that artificial plant communities reduced the cumulative runoff by 23.18 % ∼ 40.11 % and sediment yield by 49.55 % ∼ 75.78 % compared to the control plot across six rainfall events. Integrating SCBs further decreased runoff by 17.20 % ∼ 25.10 % and sediment yield by 39.22 % ∼ 46.30 % within the same plant community. Soil quality improved markedly after plant community establishment, with significant increases in total nitrogen, total phosphorus, total potassium, organic matter, and soil moisture content. Vegetation coverage and soil moisture also increased when SCBs were constructed within plant communities. With increasing plant diversity, cumulative losses of Cd, Pb, and As, primarily in the particulate form, decreased significantly. SCBs further improved the ability of plant communities to stabilize heavy metals, reducing Cd by 9.36 % ∼ 19.27 %, Pb by 11.99 % ∼ 17.11 %, and As by 7.45 % ∼ 35.66 %. Key factors influencing Cd, Pb, and As outputs included soil erosion, vegetation coverage, plant community pattern, and the presence of SCBs. Sediment yield was strongly correlated with heavy metals loss and was the best predictor for particulate Cd output (R2 = 0.979). In conclusion, SCBs integration improves artificial plant communities' control of surface runoff, sediment yield, and heavy metals diffusion in abandoned lead‑zinc mine sites, which creates favorable conditions for ecological restoration and long-term stabilization.
期刊介绍:
Ecological engineering has been defined as the design of ecosystems for the mutual benefit of humans and nature. The journal is meant for ecologists who, because of their research interests or occupation, are involved in designing, monitoring, or restoring ecosystems, and can serve as a bridge between ecologists and engineers.
Specific topics covered in the journal include: habitat reconstruction; ecotechnology; synthetic ecology; bioengineering; restoration ecology; ecology conservation; ecosystem rehabilitation; stream and river restoration; reclamation ecology; non-renewable resource conservation. Descriptions of specific applications of ecological engineering are acceptable only when situated within context of adding novelty to current research and emphasizing ecosystem restoration. We do not accept purely descriptive reports on ecosystem structures (such as vegetation surveys), purely physical assessment of materials that can be used for ecological restoration, small-model studies carried out in the laboratory or greenhouse with artificial (waste)water or crop studies, or case studies on conventional wastewater treatment and eutrophication that do not offer an ecosystem restoration approach within the paper.