Revegetation of extremely acid mine soils based on aided phytostabilization: A case study from southern China

Yang, Shanshan; Liao, Bin; Yang, Zhihui; Chai, Liyuan; Li, Jintian

doi:10.1016/j.scitotenv.2016.03.208

Cited by 86 publications

(28 citation statements)

References 35 publications

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“…It is now widely accepted that stabilization of wastes disposed after ore exploitation by vegetation cover is far more desirable than physical or chemical methods of remediation (Tordoff et al 2000;Mendez and Maier 2008;Sheoran et al 2013;Yang et al 2016). Successful revegetation is treated as an ecologically justified, permanent, visually attractive and relatively inexpensive solution.…”

Section: Discussionmentioning

confidence: 99%

In vitro multiplication of Dianthus carthusianorum calamine ecotype with the aim to revegetate and stabilize polluted wastes

Muszyńska

Hanus-Fajerska

2016

Plant Cell Tiss Organ Cult

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Section: Discussionmentioning

confidence: 99%

In vitro multiplication of Dianthus carthusianorum calamine ecotype with the aim to revegetate and stabilize polluted wastes

Muszyńska

Hanus-Fajerska

2016

Plant Cell Tiss Organ Cult

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“…Since mine tailings represent a very unfavorable environment for plant growth [4], suitable amendments must be added to stabilize the metals in situ as well as to improve their physicochemical status to make these sites more favorable for plant growth and survival. When such an attempt at vegetation is conducted combined with metal immobilizing agents, i.e., amendments, it is often termed "assisted or aided phytostabilization" [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Phytostabilization of Pb-Zn Mine Tailings with Amorpha fruticosa Aided by Organic Amendments and Triple Superphosphate

et al. 2020

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A greenhouse pot trial was conducted to investigate the effect of organic amendments combined with triple superphosphate on the bioavailability of heavy metals (HMs), Amorpha fruticosa growth and metal uptake from Pb-Zn mine tailings. Cattle manure compost (CMC), spent mushroom compost (SMC) and agricultural field soil (AFS) were applied to tailings at 5%, 10%, 20% and 30% w/w ratio, whereas sewage sludge (SS) and wood biochar (WB) were mixed at 2.5%, 5%, 10% and 20% w/w ratio. Triple superphosphate (TSP) was added to all the treatments at 4:1 (molar ratio). Amendments efficiently decreased DTPA-extracted Pb, Zn, Cd and Cu in treatments. Chlorophyll contents and shoot and root dry biomass significantly (p < 0.05) increased in the treatments of CMC (except T4 for chlorophyll b) and SMC, whereas treatments of SS (except T1 for chlorophyll a and b), WB and AFS (except T4 for chlorophyll a and b) did not show positive effects as compared to CK1. Bioconcentration factor (BCF) and translocation factor (TF) values in plant tissues were below 1 for most treatments. In amended treatments, soluble protein content increased, phenylalanine ammonialyase (PAL) and polyphenol oxidase (PPO) decreased, and catalase (CAT) activity showed varied results as compared to CK1 and CK2. Results suggested that A. fruticosa can be a potential metal phytostabilizer and use of CMC or SMC in combination with TSP are more effective than other combinations for the in situ stabilization of Pb-Zn mine tailings.

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“…Nonetheless, the widespread application of revegetation remains limited by its inconsistent performances over a range of mine tailings ponds with different geochemical properties (Tordoff et al, 2000;Mendez and Maier, 2008;Li and Huang, 2015). In particular, there have been too few reports on revegetation of extremely acidic (pH < 3) mine tailings (see Yang et al, 2016 and the references therein), although acidification occurs widely in sulphidic mine tailings (Johnson, 2003). A major difficulty in practicing revegetation on highly acidic mine wastelands lies in the selection of suitable plant species (e.g., metal-and acid-tolerant fast-growing herb legumes) and the maintenance of their growth during revegetation, especially given that such wastelands are deficient in soil nutrients (Tordoff et al, 2000;Mendez and Maier, 2008;Li and Huang, 2015).…”

Section: Introductionmentioning

confidence: 99%

Contrasting soil fungal communities at different habitats in a revegetated copper mine wasteland

et al. 2020

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Little is known about the responses of soil fungal communities to revegetation of mine wastelands, representing a major gap in the knowledge needed to improve the performances of revegetation schemes for mine wastelands. To shed some light on this matter, we reestablished 4000 m 2 of vegetation on an extremely acidic (pH 2.5) copper mine tailings pond and collected soil samples from three different types of habitats: amended layer of the reclaimed tailings (ALRT), unamended layer of the reclaimed tailings (ULRT), and unreclaimed tailings (UT). Soil fungal communities in the 120 samples collected in two consecutive years were characterized via high-throughput sequencing. The fungal diversities at ALRT and ULRT were found to be significantly higher than those at UT. Ascomycota whose relative abundance ranged from 74.5% to 98.4% was the most predominant phylum across all habitats, exhibiting the lowest predominance at ALRT. Two acidophilic fungal genera, Acidomyces and Acidiella, dominated UT with relative abundances being as high as 37.8% and 15.2%, respectively. In contrast, three genera with plant growth-promoting species (Talaromyces, Trichoderma and Penicillium) were abundant at ULRT and ALRT. Remarkably, their relative abundances at ULRT could be up to 29.0%, 26.9% and 9.7%, respectively. The three types of habitats differed considerably in the overall soil fungal community composition at species level, which became more pronounced as time progressed. The abovementioned differences between habitats in soil fungal community features were related to the reduced availability of soil copper and zinc.These results improved our understanding of fungal ecology of mine wastelands.

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Revegetation of extremely acid mine soils based on aided phytostabilization: A case study from southern China

Cited by 86 publications

References 35 publications

In vitro multiplication of Dianthus carthusianorum calamine ecotype with the aim to revegetate and stabilize polluted wastes

In vitro multiplication of Dianthus carthusianorum calamine ecotype with the aim to revegetate and stabilize polluted wastes

Phytostabilization of Pb-Zn Mine Tailings with Amorpha fruticosa Aided by Organic Amendments and Triple Superphosphate

Contrasting soil fungal communities at different habitats in a revegetated copper mine wasteland

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