Fraction distribution and bioavailability of soil heavy metals under different planting patterns in mangrove restoration wetlands in Jinjiang, Fujian, China

Hu, Bo; Su, Haitao; Deng, Jun; Zheng, Meiyan; Wang, Jinyang; Wu, Yaqing; Jin, Yifan

doi:10.1016/j.ecoleng.2021.106242

Cited by 19 publications

(7 citation statements)

References 65 publications

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“…Among them, phytoremediation technology is used as a suitable and effective restoration technique. Phytoremediation is a specific class of bioremediation, that uses metabolic processes in plants and the rhizosphere to remove polluting substances from the environment [ 4 ]. However, some plants take months or even years to repair [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Phytoremediation is a specific class of bioremediation, that uses metabolic processes in plants and the rhizosphere to remove polluting substances from the environment [ 4 ]. However, some plants take months or even years to repair [ 4 , 5 ]. In recent years, the use of short-acting crops for restoration has also achieved remarkable results [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

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Phytoremediation Competence of Composite Heavy-Metal-Contaminated Sediments by Intercropping Myriophyllum spicatum L. with Two Species of Plants

Song

Zhang

et al. 2023

IJERPH

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A variety of remediation approaches have been applied to reduce the harm and diffusion of heavy metals in aquatic sediments; however, phytoremediation in co-contaminated soils is still not clear. In order to explore the phytoremediation of sediments contaminated by Cu and Pb, two submerged plants with different characteristics, Vallisneria natans and Hydrilla verticillata, were interplanted with Myriophyllum spicatum. By simulating a submerged plant ecological environment, medium-scale-simulated ecological remediation experiments were carried out. The results showed that the two planting patterns were effective in repairing the sediments in the Cu and Pb contaminated sediments. The intercropping of Myriophyllum spicatum and Vallisneria natans can be used as the plant stabilizer of Cu because of the TF > 1 and BCF < 1, and the intercropping with Hydrilla verticillata can regulate the enrichment efficiency of Myriophyllum spicatum. The removal rates of Cu and Pb in sediments reached 26.1% and 68.4%, respectively, under the two planting patterns. The risk grade of the restored sediments was RI < 150, indicating a low risk.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phytoremediation Competence of Composite Heavy-Metal-Contaminated Sediments by Intercropping Myriophyllum spicatum L. with Two Species of Plants

Song

Zhang

et al. 2023

IJERPH

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“…5 − 7 Heavy metal pollutants have been a hot topic in research since the heavy metals have diverse sources, strong resistance to decomposition, long residual time, high toxicity, etc., and may even cause great harm to biological and human health through the food chain or other migration pathways. 8 , 9 Up to now, numerous studies have been conducted on the pollution of heavy metals in mangrove ecosystems in diversified regions of the world. 2 , 10 , 11 However, previous studies are principally concentrated in industrial areas and ecological protection areas, and few studies have been carried out on heavy metal pollution of mangroves in the urban central business district.…”

Section: Introductionmentioning

confidence: 99%

“…It plays an important role in preventing wind and waves, purification of seawater, and carbon sequestration and storage . However, rapid urbanization, industrialization, and industrial and agricultural production activities in coastal areas in recent decades have generated a large number of heavy metal pollutants, which flow into the ocean along with surface runoff and directly discharge nearshore, causing serious destruction to mangroves. − The mangrove wetland ecosystem has a strong interception, adsorption, and fixation effects on heavy metals due to its unique habitat characteristics, and thus, it often becomes a pollution sink for heavy metal pollutants. − Heavy metal pollutants have been a hot topic in research since the heavy metals have diverse sources, strong resistance to decomposition, long residual time, high toxicity, etc., and may even cause great harm to biological and human health through the food chain or other migration pathways. , Up to now, numerous studies have been conducted on the pollution of heavy metals in mangrove ecosystems in diversified regions of the world. ,, However, previous studies are principally concentrated in industrial areas and ecological protection areas, and few studies have been carried out on heavy metal pollution of mangroves in the urban central business district. Therefore, this study selected the Zhanjiang Bay mangroves in the central business district of Zhanjiang City, Guangdong Province as a research object, covering the shortage of data for heavy metal pollution research.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Contamination and Ecological Risk Assessments in Urban Mangrove Sediments in Zhanjiang Bay, South China

2022

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With the acceleration of industrialization and urbanization, increasing attention has been paid to the problem of heavy metal pollution in mangroves and its ecological restoration. Urban mangroves can be used to measure the impact of human activities on the urban ecological environment because mangroves are sensitive to human activities. However, studies on the evaluation of heavy metal elements in urban mangroves are still limited. Consequently, this study selected the urban mangroves in a central commercial area of Zhanjiang Bay as a case study to investigate the content and distribution of the heavy metals (Co, V, Cu, Pb, Ni, As, Cd, and Hg) in mangrove surface sediments. Risk levels and possible sources of heavy metals were evaluated based on multivariate statistical analysis methods and pollution indices. The results showed that the average concentrations of heavy metals for Co, V, Cu, Pb, Ni, As, Cd, and Hg were 2.91, 29.96, 18.24, 20.07, 7.86, 5.0, 0.20, and 0.09 mg/kg, respectively. Cd, Cu, and Hg were most prominent within the Zhanjiang Bay mangrove sediments, whereas other metals showed a low contamination factor of therm. Cd displayed a high potential ecological risk followed by Hg and Cu. The sampling site, the sewage outlet sampling site, exhibited the highest pollution degree followed by the surrounding area of the sewage outlet sampling site. Those polluted heavy metals could arise from anthropogenic sources, including domestic sewage and automobile exhaust emission. Correlation analysis between the heavy metals and physicochemical properties indicated that fine particles and organic matter play a key role in controlling heavy metal enrichment.

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“…Unlike the A. Tessier et al scheme, a shorter set of chemical fractions is isolated by the BCR: F1acid-soluble (exchangeable and bound to carbonates), F2-reducible (bound to Fe/Mn oxides), F3-oxidizable (bound to organic matter and sulfides), F4-residual (metals within lithogenic minerals) fraction. BCR is also applied in some modifications to assess the ratio of HM forms in mangrove soils [47], soils in mining [9,48], industrial [49], and urban [5] areas; soils amended with waste composts or bio-sorbent materials [50,51]; airborne suspended particles [52]; river suspended sediments [53], soakaway sediments [54]; road dust in megacities [55], on various types of roads [56], and from industrial areas [57]; sewage sludge [58]; fly ash from wood biomass [59], and municipal waste incineration [10]; mining wastes [12], and ore-processing wastes [60]. For the sequential extraction of HMs from bottom sediments, the schemes according to M. Kersten and U. Förstner [61], H. Zeien and G.W.…”

Section: Introductionmentioning

confidence: 99%

Integrated Assessment of Affinity to Chemical Fractions and Environmental Pollution with Heavy Metals: A New Approach Based on Sequential Extraction Results

Vodyanitskii

Власов

2021

IJERPH

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To assess the affinity degree of heavy metals (HMs) to geochemical phases, many indices with several limitations are used. Thus, this study aims to develop a new complex index for assessing contamination level and affinity to chemical fractions in various solid environmental media. For this, a new integrated approach using the chemical affinity index (CAF) is proposed. Comparison of CAF with %F on the literature examples on fractionation of HMs from soils, bottom sediments, atmospheric PM10, and various particle size fractions of road dust proved a less significant role of the residual HMs fraction and a greater contribution of the rest of the chemical fractions in the pollution of all studied environments. This fact is due to the normalization relative to the global geochemical reference standard, calculations of contribution of an individual element to the total pollution by all studied HMs, and contribution of the particular chemical fraction to the total HMs content taken into account in CAF. The CAF index also shows a more significant role in pollution and chemical affinity of mobile and potentially mobile forms of HMs. The strong point of CAF is the stability of the obtained HM series according to the degree of chemical affinity and contamination. Future empirical studies are necessary for the more precise assessment of CAF taking into account the spatial distribution of HMs content, geographic conditions, geochemical factors, the intensity of anthropogenic impact, environmental parameters (temperature, humidity, precipitation, pH value, the content of organic matter, electrical conductivity, particle size distribution, etc.). The combined use of CAF along with other indices allows a more detailed assessment of the strength of HMs binding to chemical phases, which is crucial for understanding the HMs’ fate in the environment.

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Fraction distribution and bioavailability of soil heavy metals under different planting patterns in mangrove restoration wetlands in Jinjiang, Fujian, China

Cited by 19 publications

References 65 publications

Phytoremediation Competence of Composite Heavy-Metal-Contaminated Sediments by Intercropping Myriophyllum spicatum L. with Two Species of Plants

Phytoremediation Competence of Composite Heavy-Metal-Contaminated Sediments by Intercropping Myriophyllum spicatum L. with Two Species of Plants

Heavy Metal Contamination and Ecological Risk Assessments in Urban Mangrove Sediments in Zhanjiang Bay, South China

Integrated Assessment of Affinity to Chemical Fractions and Environmental Pollution with Heavy Metals: A New Approach Based on Sequential Extraction Results

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