Ecological risk assessment of heavy metals in farmland soils in Beijing by three improved risk assessment methods

Chen, Rui; Cai, Xuying; Ding, Guoyu; Ren, Fangfang; Wang, Qi; Cheng, Nuo; Liu, Jiaxing; Li, Lanxin; Shi, Rongguang

doi:10.1007/s11356-021-14695-8

Cited by 15 publications

(4 citation statements)

References 39 publications

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“…In addition to Pb and Cu, whose concentrations from 18 sample sites were lower than the background values, the remaining heavy metal concentrations were higher than the background at some sampling points and lower than the background at other sampling points, while the average contents of Cd, Sb and Ni were higher than the background content, especially Cd, whose maximum concentration was higher than the background values of Cd in Tibet by more than four times, which was essentially the same as the previous findings by Bing et al [30] and Hou et al [31]. It can be found that the differences in the spatial distribution characteristics of heavy metal concentrations in the study area are complex, on the one hand influenced by the soil-forming parent rocks [32], which are the main cause of the differences in the background values of heavy metals in different areas. On the other hand, rock weathering or erosion will release heavy metals into the environment, thus affecting the concentration of heavy metals in the environment.…”

Section: Variations In Heavy Metal Concentrationssupporting

confidence: 88%

Ecological risk evaluation and sensitivity analysis of heavy metals on soil organisms under human activities in the Tibet Plateau, China

Zeng

Liang

et al. 2023

PLoS ONE

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The Tibetan Plateau (TP), once considered a pristine environment, is now facing increased heavy metal pollution due to human activities, causing unprecedented ecological risks to soil organisms. However, little is known about the sensitivity and tolerance of different soil organisms to heavy metal toxicity in the high-altitude areas of the TP under the background of human activity intensity and future risk control priorities. In this study, we conducted an ecological risk assessment and threshold calculation for 10 heavy metals in soil for typical soil organisms, including Cd, Co, Cr, Cu, Ni, Pb, Zn, Mn, Sb, and Sn, using the species sensitivity distribution (SSD) method in the zone between Ranwu town and Renlongba glacier on the TP. The results revealed that most sampling sites had average levels of Cd, Sb and Ni exceeding their regional soil environmental background values and were the major contaminants. Impressively, the hitherto undeveloped Renlungba Glacier showed relatively high contamination levels of Sb and Ni. From the view of sensitivity differences, the toxicity risks of Cd, Cr, Cu, Ni and Pb were higher for terrestrial plants than for soil invertebrates based on the fitted heavy metal SSD curve trends. In terms of the ecological risk level, the average potentially affected fraction values of Zn and Ni reached 18.5% and 17.0%, respectively, with significant ecological risk at a few sampling sites. In terms of ecological risk thresholds, the Cd concentration at the 5% hazard concentration (HC5) control level was 0.05 mg/kg, which was the heavy metal with the highest risk in this study. Comparing the HC5 values of each heavy metal with the limit values in the current Chinese soil environmental quality standards, the existing administrative policies as a whole lack a powerful prevention of the potential ecological risk posed by heavy metals to soil organisms.

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Section: Variations In Heavy Metal Concentrationssupporting

confidence: 88%

Ecological risk evaluation and sensitivity analysis of heavy metals on soil organisms under human activities in the Tibet Plateau, China

Zeng

Liang

et al. 2023

PLoS ONE

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“…In addition, in order to accurately evaluate whether the residual heavy metals in the amendment materials would pose a potential risk of pollution to the environment, the Hakanson risk evaluation method was used to evaluate the potential hazard of heavy metals to the environment [43][44][45]. The potential ecological hazard indices RI of Cu, Cr, Cd, and Ni in the modified materials were 2.0586, 1.9864, 2.2207, and 2.5977 when the pH levels of the leaching solution were 8.5, 9.3, 10.3, and 11.3, respectively, which were much lower than 150, indicating that they were less ecologically hazardous.…”

Section: Discussionmentioning

confidence: 99%

Improving Physical and Chemical Properties of Saline Soils with Fly Ash Saline and Alkaline Amendment Materials

An,

Han,

et al. 2024

Sustainability

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Studies have demonstrated that the physicochemical properties of saline soils can be improved, and crop growth can be promoted by fly ash saline and alkaline soil amendment materials. Herein, the effects of fly ash saline and alkaline soil amendment materials on the physical and chemical properties of saline soil and growth conditions of Arrhenatherum elatius at room temperature were evaluated. Meanwhile, planting experiments of Zea mays L. were conducted in the demonstration field of saline–alkaline land amendment in Yinchuan, Ningxia. The results showed that the application of amendment materials significantly (p < 0.05) improved saline soil’s physical and chemical properties. The saline soil pH decreased from an average of 10.51 to 8.89; the Na+ content decreased from an average of 2.93 g·kg−1 to 0.7 g·kg−1 after 25 days of action. In addition, the soil bulk density decreased from an average of 1.49 g·cm−3 to 1.36 g·cm−3, and the total porosity increased by 15.60%. Soil available phosphorus and available potassium content also increased significantly, with mean values increasing from 6.74 mg·kg−1 and 173 mg·kg−1 to 58.30 mg·kg−1 and 330.76 mg·kg−1, respectively. In addition, the plant height and stem thickness of Arrhenatherum elatius increased from an average of 11.76 cm, 1.28 mm to 21.72 cm, 1.59 mm with the application of 2.5 wt% amendment material. The plant height and stem thickness of Zea mays L. increased from mean values of 210 cm and 21.94 mm to 315.7 cm and 26.75 mm, respectively, when 0.07 t·hm−2 of amendment material was applied in the field. Overall, it was concluded that applying fly ash saline and alkaline soil amendment materials improves the physicochemical properties of saline soils, reducing saline stress and promoting the growth of Arrhenatherum elatius and Zea mays L.

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“…However, other factors, such as industrial emissions, the historic application of mercurycontaining pesticides and fertilisers in agriculture, and sewage irrigation, also contribute to Hg pollution (Mirlean et al, 2008;Chen et al, 2013;Bavec et al, 2014;Schneider, 2021;Fisher et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Poison in the Nursery: Mercury Contamination in the Tadpole-Rearing Sites of an Amazonian Frog

Schlippe Justicia,

Lemaire,

Dittrich

et al. 2023

Preprint

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Ecological risk assessment of heavy metals in farmland soils in Beijing by three improved risk assessment methods

Cited by 15 publications

References 39 publications

Ecological risk evaluation and sensitivity analysis of heavy metals on soil organisms under human activities in the Tibet Plateau, China

Ecological risk evaluation and sensitivity analysis of heavy metals on soil organisms under human activities in the Tibet Plateau, China

Improving Physical and Chemical Properties of Saline Soils with Fly Ash Saline and Alkaline Amendment Materials

Poison in the Nursery: Mercury Contamination in the Tadpole-Rearing Sites of an Amazonian Frog

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