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

Cui, Liqiang; Yan, Jinlong; Yang, Yage; Li, Lianqing; Quan, Guixiang; Ding, Cheng; Chen, YangQuan; Fu, Qiang; Chang, Andrew C.

doi:10.15376/biores.8.4.5536-5548

Cited by 68 publications

(20 citation statements)

References 43 publications

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“…3). As shown in the work by Cui et al (2013), biochar amendment reduced Cd and Pb bioavailability while increased microbial abundance and biochemical activity. This is also consistent with our previous finding in a microbial study by Liu et al (2012a) that metal pollution increased soil basal respiration, and in a field soil respiration measurement that soil CO 2 evolution was increased in the metal-polluted rice soil over the unpolluted one .…”

Section: Discussionsupporting

confidence: 53%

Enhanced rice production but greatly reduced carbon emission following biochar amendment in a metal-polluted rice paddy

Zhang

Bian

et al. 2015

Environ Sci Pollut Res

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Soil amendment of biochar (BSA) had been shown effective for mitigating greenhouse gas (GHG) emission and alleviating metal stress to plants and microbes in soil. It has not yet been addressed if biochar exerts synergy effects on crop production, GHG emission, and microbial activity in metal-polluted soils. In a field experiment, biochar was amended at sequential rates at 0, 10, 20, and 40 t ha(-1), respectively, in a cadmium- and lead-contaminated rice paddy from the Tai lake Plain, China, before rice cropping in 2010. Fluxes of soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) were monitored using a static chamber method during the whole rice growing season (WRGS) of 2011. BSA significantly reduced soil CaCl2 extractable pool of Cd, and DTPA extractable pool of Cd and Pb. As compared to control, soil CO2 emission under BSA was observed to have no change at 10 t ha(-1) but decreased by 16-24% at 20 and 40 t ha(-1). In a similar trend, BSA at 20 and 40 t ha(-1) increased rice yield by 25-26% and thus enhanced ecosystem CO2 sequestration by 47-55% over the control. Seasonal total N2O emission was reduced by 7.1, 30.7, and 48.6% under BSA at 10, 20, and 40 t ha(-1), respectively. Overall, a net reduction in greenhouse gas balance (NGHGB) by 53.9-62.8% and in greenhouse gas intensity (GHGI) by 14.3-28.6% was observed following BSA at 20 and 40 t ha(-1). The present study suggested a great potential of biochar to enhancing grain yield while reducing carbon emission in metal-polluted rice paddies.

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Section: Discussionsupporting

confidence: 53%

Enhanced rice production but greatly reduced carbon emission following biochar amendment in a metal-polluted rice paddy

Zhang

Bian

et al. 2015

Environ Sci Pollut Res

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“…The presence of potentially toxic substances, toxic heavy metals and polycyclic aromatic hydrocarbons (PAHs) in biochar and usually strongly alkaline pH may constitute a serious threat to soil quality, and in particular, to its biological life (Yang et al, 2016). Organic and inorganic contaminants introduced into the soil with biochar can have a significant impact on the population of microorganisms (Cui et al, 2013). The present study demonstrated that both rates (2.25 and 5 t ha -1 DM) of biochar added to the soil had a beneficial effect on dehydrogenases activity in the 2 nd and 3 rd year of the experiment (Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of coapplication of poultry litter biochar and mineral fertilisers on soil quality and crop yield

Mierzwa–Hersztek

Gondek

Klimkowicz‐Pawlas

et al. 2018

Zemdirbyste-Agriculture

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This study evaluated the effects of poultry litter biochar application on soil quality and yield of pasture grass mixture. A micro-plot field experiment was established on an Eutric Cambisol (CM-eu) with five treatments: 1) soil without fertilisation (control), 2) mineral fertilisation (NPK), 3) NPK + poultry litter at a rate of 5 t ha-1 DM (PL), 4) NPK + poultry litter biochar at a rate of 2.25 t ha-1 DM (PLBI) and 5) NPK + poultry litter biochar at a rate of 5 t ha-1 DM (PLBII). Given the need to create comparable conditions, the following rates of mineral fertilisers were used in the experiment: 100 kg ha-1 N, 40 kg ha-1 P and 120 kg ha-1 K. In 2014-2016, soil samples were analysed for changes in biological and chemical properties. Annual biomass production of pasture grass mixture was determined at three harvests per year. To characterize the biological soil properties, the soil enzymatic (dehydrogenases and urease) activity was determined. The results indicated that PLBI and PLBII reduced the contents of available forms of cadmium (Cd), lead (Pb) and zinc (Zn). Significant increase in dehydrogenases activity was observed in the soil with both rates of poultry litter biochar introduced. Coapplication of PLBI or PLBII with mineral fertilisers also increased the total production of biomass of pasture grass mixture compared to the NPK treatment.

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“…Furthermore, the sorption of organic C and organically bound nutrients on biochar may hinder soil microbial growth (Elzobair et al 2016). Cui et al (2013) also reported that heavy metals (Pb and Cd) in soil alter diversity, activities, and population size of microorganisms. Biochar application alters soil pH and reduced the heavy-metal bioavailability.…”

Section: Response Of Soil Microbes To Biochar Amendment In Contaminatmentioning

confidence: 99%

Response of microbial communities to biochar-amended soils: a critical review

Palansooriya

Wong

Hashimoto

et al. 2019

Biochar

441

138

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Application of biochar to soils changes soil physicochemical properties and stimulates the activities of soil microorganisms that influence soil quality and plant performance. Studying the response of soil microbial communities to biochar amendments is important for better understanding interactions of biochar with soil, as well as plants. However, the effect of biochar on soil microorganisms has received less attention than its influences on soil physicochemical properties. In this review, the following key questions are discussed: (i) how does biochar affect soil microbial activities, in particular soil carbon (C) mineralization, nutrient cycling, and enzyme activities? (ii) how do microorganisms respond to biochar amendment in contaminated soils? and (iii) what is the role of biochar as a growth promoter for soil microorganisms? Many studies have demonstrated that biochar-soil application enhances the soil microbial biomass with substantial changes in microbial community composition. Biochar amendment changes microbial habitats, directly or indirectly affects microbial metabolic activities, and modifies the soil microbial community in terms of their diversity and abundance. However, chemical properties of biochar, (especially pH and nutrient content), and physical properties such as pore size, pore volume, and specific surface area play significant roles in determining the efficacy of biochar on microbial performance as biochar provides suitable habitats for microorganisms. The mode of action of biochar leading to stimulation of microbial activities is complex and is influenced by the nature of biochar as well as soil conditions.

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

Cited by 68 publications

References 43 publications

Enhanced rice production but greatly reduced carbon emission following biochar amendment in a metal-polluted rice paddy

Enhanced rice production but greatly reduced carbon emission following biochar amendment in a metal-polluted rice paddy

Effect of coapplication of poultry litter biochar and mineral fertilisers on soil quality and crop yield

Response of microbial communities to biochar-amended soils: a critical review

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