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

Zhang, Afeng; Bian, Rongjun; Li, Lianqing; Wang, Xudong; Zhao, Ying; Hussain, Qaiser; Pan, Genxing

doi:10.1007/s11356-015-4967-8

Cited by 42 publications

(9 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Faleye et al (2013) concluded that agricultural inputs significantly increase agricultural production and provide food to the region. Zhang et al (2015) suggested that it is necessary to increase grain yield by using the potential of biochar, and reducing CO 2 emission by metal polluted rice paddies. Energy consumption needs effective planning to increase agriculture production especially rice production in a country.…”

Section: Resultsmentioning

confidence: 99%

Dynamic linkages among energy consumption, air pollution, greenhouse gas emissions and agricultural production in Pakistan: sustainable agriculture key to policy success

et al. 2016

View full text Add to dashboard Cite

This study examines the impact of energy demand, air pollution, fossil fuel energy and greenhouse gas emissions on agricultural production in Pakistan for the period 1980-2013. The study utilized the following variables for agricultural production, i.e., agriculture value added, cotton production, wheat production, rice production and sugarcane production in Pakistan. The study employed generalized method of moments estimator to evaluate different simultaneous equations in relation to environmental factors and agricultural production in a country. The results show that CO 2 emissions have a positive and energy sources have a negative impact on agricultural value added. The fossil source of energy has a direct relationship with the cotton and sugarcane production, while CO

show abstract

Section: Resultsmentioning

confidence: 99%

Dynamic linkages among energy consumption, air pollution, greenhouse gas emissions and agricultural production in Pakistan: sustainable agriculture key to policy success

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The inconsistent effect of biochar amendment on N 2 O emissions might be explained by the soil properties ( Cayuela et al, 2014 ). The above mentioned studies attributed the reduced N 2 O emissions in the paddy fields with biochar amendment to soil aeration improvement after biochar application and the decrease of

availability due to the absorption by biochar ( Lehmann et al, 2006 ; Zhang et al, 2010 ). These reasons could well explain the decreasing trend of N 2 O emissions in biochar treatment in the BH soil in this study, but not for the TY soil with a converse trend.…”

Section: Discussionmentioning

confidence: 99%

“…Biochar, a carbon sequestrating and recalcitrant material, is produced by the pyrolysis of plant residues under a zero or limited oxygen condition ( Cao et al, 2011 ), possessing the characteristics of a high pH, high cation exchange capacity (CEC), and a high hydrophilic characteristic, large porosity and surface area ( Lehmann et al, 2011 ). Biochar has been applied to soil as an optional amendment to improve soil fertility and grain yields via the promotion of nutrient turnover ( Zhang et al, 2010 ; Kang et al, 2016 ). Soil with a low fertility or pH value can be improved with biochar amendment ( Bakar et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Differentiated Mechanisms of Biochar Mitigating Straw-Induced Greenhouse Gas Emissions in Two Contrasting Paddy Soils

Wang

Bai

et al. 2018

Front. Microbiol.

View full text Add to dashboard Cite

Straw returns to the soil is an effective way to improve soil organic carbon and reduce air pollution by straw burning, but this may increase CH4 and N2O emissions risks in paddy soils. Biochar has been used as a soil amendment to improve soil fertility and mitigate CH4 and N2O emissions. However, little is known about their interactive effect on CH4 and N2O emissions and the underlying microbial mechanisms. In this study, a 2-year pot experiment was conducted on two paddy soil types (an acidic Utisol, TY, and an alkaline Inceptisol, BH) to evaluate the influence of straw and biochar applications on CH4 and N2O emissions, and on related microbial functional genes. Results showed that straw addition markedly increased the cumulative CH4 emissions in both soils by 4.7- to 9.1-fold and 23.8- to 72.4-fold at low (S1) and high (S2) straw input rate, respectively, and significantly increased mcrA gene abundance. Biochar amendment under the high straw input (BS2) significantly decreased CH4 emissions by more than 50% in both soils, and increased both mcrA gene and pmoA gene abundances, with greatly enhanced pmoA gene and a decreased mcrA/pmoA gene ratio. Moreover, methanotrophs community changed distinctly in response to straw and biochar amendment in the alkaline BH soil, but showed slight change in the acidic TY soil. Straw had little effect on N2O emissions at low input rate (S1) but significantly increased N2O emissions at the high input rate (S2). Biochar amendment showed inconsistent effect on N2O emissions, with a decreasing trend in the BH soil but an increasing trend in the TY soil in which high ammonia existed. Correspondingly, increased nirS and nosZ gene abundances and obvious community changes in nosZ gene containing denitrifiers in response to biochar amendment were observed in the BH soil but not in the TY soil. Overall, our results suggested that biochar amendment could markedly mitigate the CH4 and N2O emissions risks under a straw return practice via regulating functional microbes and soil physicochemical properties, while the performance of this practice will vary depending on soil parent material characteristics.

show abstract

“…Moreover, biochar alters microbial activity and abundance, thereby affecting arbuscular mycorrhizal fungi and GHG emissions. In a field experiment, increasing the biochar application rate from 0 to 10 t ha −1 , 20 t ha −1 , and 40 t ha −1 reduced N 2 O emissions from Cd‐ and Pb‐contaminated soils by 7.1%, 30.7%, and 48.6%, respectively, and increased rice yield by 10.0%, 25.1%, and 26.3% respectively (Zhang et al, 2015). The application rate of biochar was positively correlated with the suppression of N 2 O emissions, which was consistent with the results of meta‐analysis.…”

Section: Effect Of Biochar On Ghg Emissions From Various Environmentsmentioning

confidence: 99%

Biochar affects greenhouse gas emissions in various environments: A critical review

et al. 2022

View full text Add to dashboard Cite

Biochar application to the soil is a novel approach to carbon sequestration. Biochar application affects the emission of greenhouse gases (GHGs), such as CO2, CH4, and N2O, from different environments (e.g., upland soils, rice paddies and wetlands, and composting environments). In this review, the effect of biochar on GHGs emissions from the above three typical environments are critically evaluated based on a literature analysis. First, the properties of biochar and engineered biochar related to GHGs emissions was reviewed, targeting its relationship with climate change mitigation. Then, a meta‐analysis was conducted to assess the effect of biochar on the emissions of CO2, CH4, and N2O in different environments, and the relevant mechanisms. Several parameters were identified as the main influencing factors in the meta‐analysis, including the pH of the biochar, feedstock type, pyrolysis temperature, biochar application rate, C/N ratio of the biochar, and experimental scale. An overall suppression effect among different environments was found, in the following order for different greenhouse gases: N2O > CH4 > CO2. We conclude that biochar can change the physicochemical properties of soil and compost in different environments, which further shapes the microbial community in a specific environment. Biochar addition affects CO2 emissions by influencing oligotrophic and copiotrophic bacteria; CH4 emissions by regulating the abundance of functional genes, such as mcrA (a methanogen) and pmoA (a methanotroph); and N2O emissions by controlling N‐cycling functional genes, including amoA, nirS, nirK, nosZ. Finally, future research directions for mitigating greenhouse gas emissions through biochar application are suggested.

show abstract

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

Cited by 42 publications

References 52 publications

Dynamic linkages among energy consumption, air pollution, greenhouse gas emissions and agricultural production in Pakistan: sustainable agriculture key to policy success

Dynamic linkages among energy consumption, air pollution, greenhouse gas emissions and agricultural production in Pakistan: sustainable agriculture key to policy success

Differentiated Mechanisms of Biochar Mitigating Straw-Induced Greenhouse Gas Emissions in Two Contrasting Paddy Soils

Biochar affects greenhouse gas emissions in various environments: A critical review

Contact Info

Product

Resources

About