Biochar decreased microbial metabolic quotient and shifted community composition four years after a single incorporation in a slightly acid rice paddy from southwest China

Chen, Junhui; Pan, Genxing; Liu, Xiaoyu; Zhang, Xuhui; Li, Lianqing; Bian, Rongjun; Cheng, Kun; Zheng, Jufeng

doi:10.1016/j.scitotenv.2016.07.135

Cited by 261 publications

(117 citation statements)

References 68 publications

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“…It suggested that biochar amendment could enhance the C utilization efficiency of microorganisms (Chen et al, ). This finding was also supported by Zheng et al (), who reported that biochar decreased the microbial metabolic quotient 4 years after a single incorporation in a slightly acidic rice paddy. Similarly, Zhou et al () found an overall decrease of 13% in q CO 2 due to biochar addition by meta‐analysis.…”

Section: Discussionsupporting

confidence: 83%

“…dissolved organic matter, fresh/aged biochar, phospholipid fatty acid, SOC mineralization, soil microbial community composition finding was reported by Zheng et al (2016), who found that DOC content was significantly lower after 4 years of biochar amendment in paddy soil. It was reported that the biochar's labile C may rapidly degrade within several days (Smith, Collins, & Bailey, 2010) or a few months (Kuzyakov et al, 2009) in soil.…”

Section: Introductionsupporting

confidence: 56%

“…A study by Wang et al () showed that the dissolved organic carbon (DOC) content is generally higher in paddy soil with biochar amendment. However, a converse finding was reported by Zheng et al (), who found that DOC content was significantly lower after 4 years of biochar amendment in paddy soil. It was reported that the biochar's labile C may rapidly degrade within several days (Smith, Collins, & Bailey, ) or a few months (Kuzyakov et al, ) in soil.…”

Section: Introductionsupporting

confidence: 53%

“…For this reason, biochar soil application has been widely accepted as an important strategy to increase soil organic carbon (SOC) sequestration (Sohi, 2012;Zheng, Han, et al, 2017). The impacts of biochar application on SOC dynamics have been reported in detail in the literatures (Ameloot et al, 2014;Jiang, Tan, Cheng, Haddix, & Cotrufo, 2019;Zheng et al, 2016). Previous studies showed that aging of biochar is a vital factor influencing SOC mineralization (Maestrini, Nannipieri, & Abiven, 2015;Wang, Xiong, & Kuzyakov, 2016).…”

Section: Introductionmentioning

confidence: 99%

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The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

et al. 2019

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While biochar soil amendment has been widely proposed as a soil organic carbon (SOC) sequestration strategy to mitigate detrimental climate changes in global agriculture, the SOC sequestration was still not clearly understood for the different effects of fresh and aged biochar on SOC mineralization. In the present study of a two‐factorial experiment, topsoil samples from a rice paddy were laboratory‐incubated with and without fresh or aged biochar pyrolyzed of wheat residue and with and without crop residue‐derived dissolved organic matter (CRM) for monitoring soil organic matter decomposition under controlled conditions. The six treatments included soil with no biochar, with fresh biochar and with aged biochar treated with CRM, respectively. For fresh biochar treatment, the topsoil of a same rice paddy was amended with wheat biochar directly from a pyrolysis wheat straw, the soil with aged biochar was collected from the same soil 6 years following a single amendment of same biochar. Total CO2 emission from the soil was monitored over a 64 day time span of laboratory incubation, while microbial biomass carbon and phospholipid fatty acid (PLFA) were determined at the end of incubation period. Without CRM, total organic carbon mineralization was significantly decreased by 38.8% with aged biochar but increased by 28.9% with fresh biochar, compared to no biochar. With CRM, however, the significantly highest net carbon mineralization occurred in the soil without biochar compared to the biochar‐amended soil. Compared to aged biochar, fresh biochar addition significantly increased the total PLFA concentration by 20.3%–33.8% and altered the microbial community structure by increasing 17:1ω8c (Gram‐negative bacteria) and i17:0 (Gram‐positive bacteria) mole percentages and by decreasing the ratio of fungi/bacteria. Furthermore, biochar amendment significantly lowered the metabolic quotient of SOC decomposition, thereby becoming greater with aged biochar than with fresh biochar. The finding here suggests that biochar amendment could improve carbon utilization efficiency by soil microbial community and SOC sequestration potential in paddy soil can be enhanced by the presence of biochar in soil over the long run.

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Section: Discussionsupporting

confidence: 83%

Section: Introductionsupporting

confidence: 56%

Section: Introductionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

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The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

et al. 2019

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“…Different results were presented by Paz-Ferreiro et al [12], who showed a reduction in the metabolic quotient by, respectively, 35 and 63% after the introduction of 4 and 8% (w/w) doses of sewage sludge biochar into the soil. The lower metabolic quotient found in these treatments may be attributed to a shift of soil organic C toward a more recalcitrant form against microbial degradation [45]. This phenomenon is typical for the microorganism communities with a large proportion of young organisms.…”

Section: Effect Of Sewage Sludge Biochars On Soil Microbial Activitymentioning

confidence: 85%

Sewage sludge biochars management—Ecotoxicity, mobility of heavy metals, and soil microbial biomass

Mierzwa–Hersztek

Gondek

Klimkowicz‐Pawlas

et al. 2018

Enviro Toxic and Chemistry

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Production of biochar from sewage sludge may be a promising solution for sewage sludge management and improvement of soil properties, including carbon dioxide sequestration. The aim of the present study was to compare the effects of biochars derived from different sewage sludges on soil physicochemical and biological properties, ecotoxicity, and plant yield. Three biochars (produced at a temperature of 300 °C) were applied into sandy acid soil in doses of 0.5, 1, and 2% (w/w). Depending on the type and dose, the application of sewage sludge biochars into the soil caused diverse effects on the parameters of soil biological activity (microbial biomass [Cmic], soil respiration, and value of metabolic quotient). No correlation between the applied dose of biochars and inhibition of Vibrio fischeri luminescence was observed. The factor with a stronger impact on the activity of V. fischeri was the type of biochar. The use of the OSTRACODTOXKIT F test (MicroBioTests) showed that the addition of sewage sludge biochar (regardless of its dose) reduced the soil toxicity to Heterocypris incongruens compared with the control soil. A significant increase of Poa pratensis L. biomass was obtained in soils with 1 and 2% additions of each of the biochars. The addition of biochars in doses of 1 and 2% to the soil had greater effect on the content of mobile forms of Cu, Pb, and Cd than the 0.5% dose compared with the control. Environ Toxicol Chem 2018;37:1197-1207. © 2017 SETAC.

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Biochar Assisted Remediation of Toxic Metals and Metalloids

Dhiman

Ibrahim

Devi

et al. 2021

Handbook of Assisted and Amendment: Enhanced Sustainable Remediation Technology

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Biochar decreased microbial metabolic quotient and shifted community composition four years after a single incorporation in a slightly acid rice paddy from southwest China

Cited by 261 publications

References 68 publications

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

Sewage sludge biochars management—Ecotoxicity, mobility of heavy metals, and soil microbial biomass

Biochar Assisted Remediation of Toxic Metals and Metalloids

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