Heavy metal availability and impact on activity of soil microorganisms along a Cu/Zn contamination gradient

Wang, Yuanpeng; Shi, Jiyan; Lin, Qingfeng; Chen, Xincai; Chen, Yingxu

doi:10.1016/s1001-0742(07)60141-7

Cited by 86 publications

(39 citation statements)

References 24 publications

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“…With reductions of Cd and Pb bioavailability, the biochar-amended soils supported greater populations of fungi and actinomycetes. Soil microorganisms and their metabolisms are sensitive indicators of soil fertility and environmental changes (Wang et al 2007). Bacterial, fungal, and actinomycetes populations of soils are functions of the soils' organic carbon contents (Entry et al 2008); a pH at the upper end of the normal range often has been observed to encourage microbial growth (Silva and Nahas 2002).…”

Section: Discussionmentioning

confidence: 99%

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Influence of Biochar on Microbial Activities of Heavy Metals Contaminated Paddy Fields

Cui¹,

Yan²,

Yang³

et al. 2013

BioResources

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dBiochar (BC) amendments might decrease the bioavailability of metals in soils that are contaminated with heavy metals. In general, soil microbial communities are sensitive to changes in soil property changes. Microbial communities were tested in a Cd-and Pb-polluted paddy field in southern China. BC was applied as a basal soil amendment before rice transplantation in 2009. The BC was applied at rates of 0, 10, 20, and 40 tons per hectare. Soil heavy metal fractions with sequential extraction procedure, soil microorganisms, and enzymes were monitored in 2011. The soil pH and soil organic carbon (SOC) were significantly increased by 2% to 5% and 16% to 51% under BC amendment, respectively. Compared to the non-BC treatment, the cadmium (Cd) and lead (Pb) acid-soluble fraction concentrations were significantly decreased by 15.3% to 26.7% and 18.2% to 30.9%. The Cd and Pb reducible fraction were decreased by 13.5% to 25.6% and 21.9% to 23.53%.The Cd and Pb oxidizable fraction by 15.4% to 69.2% and 22.7% to 29.3% with BC application, respectively. The populations of actinomycetes and fungi were increased by 19.0% to 38.5% and 3.7 to 9.3 times, respectively. Meanwhile, BC significantly increased the cellulose, urine enzyme, neutral phosphatase, and sucrase activities by 117.4% to 178.3%, 31.1% to 37.6%, 29.7% to 193.8%, and 36.5% to 328.6%, respectively. BC amendment offers a basic option to reduce Cd and Pb bioavailability and change the fractions. The BC also increases microorganism quantity and soil enzyme activity.

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Section: Discussionmentioning

confidence: 99%

“…Soil neutral phosphatase activity was measured spectrophotometrically by the disodium phenyl phosphate method of Wang et al (2007). The assay for soil cellulose was adapted from Kandeler and Gerber (1988).…”

Section: Soil Sampling and Analysismentioning

confidence: 99%

Influence of Biochar on Microbial Activities of Heavy Metals Contaminated Paddy Fields

Cui¹,

Yan²,

Yang³

et al. 2013

BioResources

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“…It was found that both short-term and long-term exposures to heavy metals resulted in the reduction of soil microbial activity and diversity (Khan et al 2007;Sheik et al 2012). Heavy metals adversely affect the activity and diversity of soil microbial communities associating with elemental cycling (Wang et al 2007;Subrahmanyam et al 2014a, c). A significant decrease in bacterial diversity has been observed with increased soil pollution (Subrahmanyam et al 2014c).…”

Section: Introductionmentioning

confidence: 99%

Effect of long-term industrial waste effluent pollution on soil enzyme activities and bacterial community composition

Subrahmanyam

Shen

Liu

et al. 2016

Environ Monit Assess

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Although numerous studies have addressed the influence of exogenous pollutants on microorganisms, the effect of long-term industrial waste effluent (IWE) pollution on the activity and diversity of soil bacteria was still unclear. Three soil samples characterized as uncontaminated (R1), moderately contaminated (R2), and highly contaminated (R3) receiving mixed organic and heavy metal pollutants for more than 20 years through IWE were collected along the Mahi River basin, Gujarat, western India. Basal soil respiration and in situ enzyme activities indicated an apparent deleterious effect of IWE on microbial activity and soil function. Community composition profiling of soil bacteria using 16S rRNA gene amplification and denaturing gradient gel electrophoresis (DGGE) method indicated an apparent bacterial community shift in the IWE-affected soils. Cloning and sequencing of DGGE bands revealed that the dominated bacterial phyla in polluted soil were affiliated with Firmicutes, Acidobacteria, and Actinobacteria, indicating that these bacterial phyla may have a high tolerance to pollutants. We suggested that specific bacterial phyla along with soil enzyme activities could be used as relevant biological indicators for longterm pollution assessment on soil quality.

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“…Pb) tended to have broader leaves than small leaf plants. It was found that higher levels of metals is possible in grasses, surrounding mining sites (Nicholson et al, 2003;Vazquez et al, 2008;Wang et al, 2007). Literature has shown that bioaccumulation of As and resulting phytotoxicity to lower plant species were observed in wet mining areas that had several metal-tolerant plant species (e.g., Angophora floribunda, Cassinia laevis, and Chrysocephalum apiculatum) that colonized the periphery of the site (Clemente et al, 2005;Boularbah, et al, 2006;Han et al, 2006).…”

Section: Uptake and Effects On Floramentioning

confidence: 99%

Mining Activities and Associated Environmental Impacts in Arid Climates: A Literature Review

Sims¹,

Hooda²,

Gillmore³

2013

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Mining operations have released measurable levels of geogenic trace metals (e.g. Cd, Cr, Pb), metalloids (e.g. As, Se), and anthropogenic chemicals (e.g. CN -, Hg) into surrounding sediments. Abandoned mining sites in hyperarid climates has not been the focus of much research compared to wet and temperate areas. Research has focused on historical mining sites in semiarid and wetter regions in the United States, south pacific and Europe. Those areas have obvious risks associated with them including aqueous phase mobilization as a result of abundant precipitation. However, many mining areas in the American Southwest and aboard are located in hyperarid regions and viewed as not having a potential for mobilization of contaminants. Seasonal storm events can mobilize sediments containing contaminates beyond a small, localized area and into the wider environment. Literature indicates that arid and hyperarid mining regions have not been studied as extensively as those in wetter climates.

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Heavy metal availability and impact on activity of soil microorganisms along a Cu/Zn contamination gradient

Cited by 86 publications

References 24 publications

Influence of Biochar on Microbial Activities of Heavy Metals Contaminated Paddy Fields

Influence of Biochar on Microbial Activities of Heavy Metals Contaminated Paddy Fields

Effect of long-term industrial waste effluent pollution on soil enzyme activities and bacterial community composition

Mining Activities and Associated Environmental Impacts in Arid Climates: A Literature Review

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