Biochar soil amendment increased bacterial but decreased fungal gene abundance with shifts in community structure in a slightly acid rice paddy from Southwest China

Chen, Junhui; Liu, Xiaoyu; Zhang, Bin; Lu, Haifei; Zhong-zhi, Chi; Pan, Genxing; Li, Lianqing; Zheng, Jufeng; Xu-hui, Zhang; Wang, Jiafang; Yu, Xinyan

doi:10.1016/j.apsoil.2013.05.003

Cited by 331 publications

(127 citation statements)

References 84 publications

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“…This is in contrast to other experiments, in which lower fungi/ bacteria ratios have been observed 1 to 2 years after biochar addition (Jin 2010;Chen et al 2013), and specifically contradicts results from a short-term incubation study using the same soil (Mitchell et al 2015). However, Mitchell et al (2015) also found that the main effects occurred at biochar addition rates of 10 to 20 t ha −1 , whereas the control and 5 t ha −1 soils had a similar microbial community.…”

Section: Microbial Community Compositioncontrasting

confidence: 82%

Soil microbial responses over 2 years following biochar addition to a north temperate forest

et al. 2015

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Soil microbial biomass, activity, and community composition were studied 1 and 2 years after biochar, phosphorus (P), and biochar+P additions to the soil of a north temperate, mixed-deciduous, P-limited forest in Central Ontario, Canada. Biochar was pyrolyzed on site from sugar maple and white spruce sawdust at ca. 400°C, and P was added as triple superphosphate. Biochar additions of 5 t ha −1 (approximately 0.4 to 1 kg P ha −1 ) had minor effects on bacterial and fungal community composition, fungi/bacteria ratios, microbial biomass, and microbial C mineralization, with significant changes only being detected in the organic layer for additions of maple biochar. In contrast, additions of 200 kg P ha −1 did alter soil chemical properties and reduced both microbial biomass and fungi/bacteria ratios. We conclude that biochar addition at 5 t ha −1 is neither beneficial nor toxic to the soil microbes in a northern hardwood forest on acidic soils, suggesting that biochar amendments can be used to sequester C without adversely affecting the soil microbial community.

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Section: Microbial Community Compositioncontrasting

confidence: 82%

Soil microbial responses over 2 years following biochar addition to a north temperate forest

et al. 2015

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“…Nearly all the elements were associated and showed high values in the first component (PC1), while the different fraction of the Oxidizable Cd, Residual Cd, and Oxidizable Pb were grouped into the second component (PC2). The PCA results imply that biochar amendment led to a change in soil properties, heavy metals fractions, soil enzymes, and microbial community of the slightly acid paddy soil and they affected each other in soil (Chen et al 2013). With reductions of Cd and Pb bioavailability, the biochar-amended soils supported greater populations of fungi and actinomycetes.…”

Section: Discussionmentioning

confidence: 99%

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

Cui¹,

Yan²,

Yang³

et al. 2013

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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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“…Because BC is generally low in inorganic N, it is usually applied in conjunction with mineral fertilizer (Chen et al, 2013). In fact, the combination of BC and mineral fertilizers has been shown to synergistically affect crop yield and growth in field studies (Atkinson et al, 2010;Lehmann et al, 2003;Steiner et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

Tian

Wang

Dippold

et al. 2016

Science of The Total Environment

227

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Biochar soil amendment increased bacterial but decreased fungal gene abundance with shifts in community structure in a slightly acid rice paddy from Southwest China

Cited by 331 publications

References 84 publications

Soil microbial responses over 2 years following biochar addition to a north temperate forest

Soil microbial responses over 2 years following biochar addition to a north temperate forest

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

Biochar affects soil organic matter cycling and microbial functions but does not alter microbial community structure in a paddy soil

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