Profiling multiple heavy metal contamination and bacterial communities surrounding an iron tailing pond in Northwest China

Li, Sha; Wu, Juan-Li; Huo, Yanli; Zhao, Xu; Xue, Lingui

doi:10.1016/j.scitotenv.2020.141827

Cited by 127 publications

(40 citation statements)

References 45 publications

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“…Prevotella 9, Blautia , Marmoricola, and Barnesiella were significantly enriched in the control group and negatively correlated with the concentration of heavy metals, which were sensitive to heavy metals. Consistent with the results of this study, Marmoricola abundance was shown to be significantly negatively correlated with soil heavy metal content [ 82 ]. Gemmatimonas , Microvirga , Massilia , Sphingomonas, and Blastococcus were significantly enriched in the highway disturbed area, and were positively correlated with heavy metals, indicating that they were heavy metal tolerant bacterium [ 83 , 84 , 85 ].…”

Section: Discussionsupporting

confidence: 90%

Effects of Elevation and Distance from Highway on the Abundance and Community Structure of Bacteria in Soil along Qinghai-Tibet Highway

Liu

Yang

et al. 2021

IJERPH

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In recent years, highway construction in the Qinghai-Tibet Plateau (QTP) has developed rapidly. When the highway passes through grassland, the soil, vegetation, and ecological environment along the line are disturbed. However, the impact on soil bacteria is still unclear. Soil bacteria play an important role in the ecological environment. The Qinghai-Tibet Highway (QTH) was selected as the research object to explore the changes in bacterial community structure, vegetation, soil, and other indicators. The results showed that the highway-related activities increased the degradation of vegetation along the road, significantly changed the physical and chemical properties of soil, and caused heavy metal pollution. These environmental factors affected the diversity and community structure of soil bacteria. This kind of disturbance shows a trend of gradually increasing from near to far from the highway. Gemmatimonas, Terrimonas, Nitrospira and Bacillus are more tolerant to environmental changes along the highway, while Barnesiella, and Blastococcus are more sensitive. The content of nitrate decreased and the content of ammonium nitrogen increased in the disturbed area, increasing the abundance of nitrifying bacteria. Therefore, the main factor of the disturbance of the QTH on the grassland is the decline of soil nutrient content, and the supplement of soil nutrients such as carbon and nitrogen should be taken into account in the process of ecological restoration of grassland along the line.

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Section: Discussionsupporting

confidence: 90%

Effects of Elevation and Distance from Highway on the Abundance and Community Structure of Bacteria in Soil along Qinghai-Tibet Highway

Liu

Yang

et al. 2021

IJERPH

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“…Molecular techniques such as high-throughput sequencing techniques have been used to evaluate the changes in microbial community due to HMs pollution (Ros et al, 2009;Gołębiewski et al, 2014). Changes in soil microbial community structure and diversity could serve as biomarkers to study the effect of HMs on soil health (Vinhal-Freitas et al, 2017;Li et al, 2020b;Di Cesare et al, 2020). However, it should be noted that some studies have reported that HMs contamination had limited effect on the microbial community structure (Lorenz et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Spatial Variation in Microbial Community in Response to As and Pb Contamination in Paddy Soils Near a Pb-Zn Mining Site

Zou¹,

Lu²,

Dai³

et al. 2021

Front. Environ. Sci.

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Mining activity is a growing environmental concern as it contributes to heavy metals (HMs) pollution in agricultural soils. Microbial communities play an important role in the biogeochemical cycling of HMs and have the potential to be used as bioindicators. Arsenic (As) and lead (Pb) are the most hazardous HMs and are mainly originated from mining activities. However, spatial variation in microbial community in response to As and Pb contamination in paddy soils remains overlooked. In this study, the biological and chemical properties of sixteen soil samples from four sites (N01, N02, N03, and N04) near a Pb-Zn mining site at different As and Pb levels were examined. The results showed that soil pH, total As and Pb, bioavailable As and Pb, nitrate-nitrogen (NO3−-N) and ammonia-nitrogen (NH4+-N) were the most important factors in shaping the bacterial community structure. In addition, significant correlations between various bacterial genera and As and Pb concentrations were observed, indicating their potential roles in As and Pb biogeochemical cycling. These findings provide insights into the variation of paddy soil bacterial community in soils co-contaminated with different levels of As and Pb.

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“…Heavy metal pollution is characterized by long duration, concealment, accumulation and irreversibility (Stylianou et al, 2020). This not only poses a threat to the soil and water environment, but also affects the quality of crops, etc., and causes risks to human health through the food chain (Li et al, 2020a;Ran et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Distribution and risk assessment of heavy metals in soil in a commonly used mining area

Xu¹,

Dai²,

Skuza³

et al. 2021

Preprint

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This study investigated the spatial, vertical and fraction distribution, multivariate statistical analysis, as well as assessed pollution levels and health risks posed by heavy metals at the Wenshan mining area. There were 6 sampling points at the site, from which a total of 32 samples were collected. The eastern and south-eastern parts of the site were heavily polluted, while the western and north-western parts were less contaminated. As pollution was particularly severe in the topsoil, with the mean value of 503.31 mg kg− 1 being more than 25-fold higher than the risk screening value. As content in all layers was greater than the standard risk screening value in the three typical profiles. The proportion of various Ni, Cu and As fractions changed slightly with depth at all three sampling points, and the residual fraction percentage accounted for more or nearly 80% of the total concentration. In addition, a significantly negative correlation (p < 0.05) was detected between Ni and As (-0.85), indicating a different source of these two elements. Principal component analysis demonstrated that two PCs, i.e. PC1, attributed to human activities, e.g. mining activities and transport, and PC2, defined as natural sources, were responsible for 80.632% of the total variance. As posed severe ecological and unacceptable health risks, i.e. non-carcinogenic and carcinogenic risks both for adults and children. Therefore, a comprehensive understanding of the characteristics of mining pollutants and improved emission management in the mining process are essential to protect the environment and health of local residents.

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Profiling multiple heavy metal contamination and bacterial communities surrounding an iron tailing pond in Northwest China

Cited by 127 publications

References 45 publications

Effects of Elevation and Distance from Highway on the Abundance and Community Structure of Bacteria in Soil along Qinghai-Tibet Highway

Effects of Elevation and Distance from Highway on the Abundance and Community Structure of Bacteria in Soil along Qinghai-Tibet Highway

Spatial Variation in Microbial Community in Response to As and Pb Contamination in Paddy Soils Near a Pb-Zn Mining Site

Distribution and risk assessment of heavy metals in soil in a commonly used mining area

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