Rice Straw Biochar is More Beneficial to Soil Organic Carbon Accumulation and Stabilization than Rice Straw and Rice Straw Ash

He, Mengru; Jiang, Ya; Han, Yuhang; Zhu, Wenhao; Meng, Dan; Li, Cuilan; Cai, Hongguang; Zhang, Jinjing

doi:10.1007/s42729-023-01256-w

Cited by 5 publications

(2 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…O‐alkyl C) due to the enhancement of soil microbial activity under biochar amendment. Overall, adding rice straw biochar to soil increased aromatic structures in soil (He et al., 2023). The pH values of different biochar samples decline after oxidized ageing in our work (Table S1), which was mainly attributed to two reasons: first, this might be related to the surface oxidation of biochar promoting the rapid multiplication and formation of acidic oxygen‐containing functional groups during the oxidation ageing process (Wang et al., 2023); second, it might increase the organic carbon decomposition during the ageing process (Liu & Chen, 2022).…”

Section: Discussionmentioning

confidence: 99%

Alterations of bacterial community related C cycle by affecting soil carbon fractions under aged biochar application

El‐Desouki,

Li,

Abd‐Elkader

et al. 2024

Soil Use and Management

View full text Add to dashboard Cite

Biochar is a beneficial substance for sequestering organic carbon in soil. Application of fresh biochar (FB) to the soil leads to an increase in soil organic carbon (SOC). However, the effects of aged biochar on SOC stabilization in acidic soils are unclear. A 90‐day incubation study was assessed to evaluate the impact of adding rice straw biochar on acid soil. The study aimed to assess the alterations in carbon fractions, enzyme activity and bacterial communities in soil. We used different ageing processes (water‐washed biochar [WB] and H2O2 oxidation biochar [OXB]) at a rate of 2%, with control at 0% of biochar. The results indicated that aged biochar reduced CO2 efflux and increased microbial biomass carbon (MBC), reducing the microbial metabolic quotient (qCO2). The SOC and its fractions increased with ageing relative to the FB treatment. Compared with the FB treatment, the carbon pool management index (CPMI) also increased with the OXB application. Additionally, the application of OXB stimulated the soil enzymes involved in carbon cycling, specifically β‐1,4‐glucosidase (βG), β‐1,4‐xylosidase (βX) and cellobiohydrolase (CBH) relative to the FB and WB treatments. Moreover, biochar applications improved the structure and functions of the bacterial population in soil with high acidity. Proteobacteria, Acidobacteria, Actinobacteria and Chloroflexi were the most prevalent species in all treatments, as shown by their relative abundances. The redundancy analysis revealed that the DOC (dissolved organic carbon) and MBC significantly impacted on the microbial community. Furthermore, adding OXB altered the Bacterial community involved in the C cycle by affecting SOC. These findings help us learn more about how applying fresh or aged rice straw biochar changes different carbon fractions and microbial communities in soil. It may serve as an instance for studying the provision of soil organic carbon after applying biochar in acidic soil.

show abstract

Section: Discussionmentioning

confidence: 99%

Alterations of bacterial community related C cycle by affecting soil carbon fractions under aged biochar application

El‐Desouki,

Li,

Abd‐Elkader

et al. 2024

Soil Use and Management

View full text Add to dashboard Cite

show abstract

“…Some previous studies have found that mineral N addition increased the stabilization of plant C and SOC in humus by promoting hydrophobic protection(Luo et al 2019;Spaccini et al 2002). With the increase of incubation time, the accumulation of soil humus can protect plant C and SOC from microbial decomposition, thus increasing soil C sequestration(Giesler et al 2004;He et al 2023;Kleber et al 2015).…”

mentioning

confidence: 97%

Globally nitrogen deposition decreased net carbon sequestration in terrestrial ecosystems by increasing plant-derived carbon decomposition rather than soil priming effects: A meta-analysis

Dong,

Lu,

Liu

et al. 2023

Preprint

View full text Add to dashboard Cite

Aims Plant carbon (C) input and soil priming effects (PEs) together determine the net C sequestration of terrestrial ecosystems. These processes are recognized to be largely influenced by nitrogen (N) availability, the global patterns of N deposition effects on soil net C sequestration and the controlling factors for such effects remain unclear. Methods In this study, we conducted a meta-analysis of 2205 observations from 56 studies worldwide to explore the effect of mineral N addition on net C sequestration and the associated drivers. Results The meta-analysis found that although mineral N addition reduced soil PEs, it still decreased soil net C sequestration by increasing plant-derived C decomposition. The decrease of net C sequestration was much greater by urea addition than by ammoniacal and nitrate N addition. In addition, mineral N addition only decreased net C sequestration under pyrolytic C and residue C substrate forms. The higher soil organic C (SOC) and total N (TN) content increased net C sequestration by decreasing soil PEs rather than plant-derived C decomposition. Higher soil clay content reduced net C sequestration by increasing plant-derived C decomposition rather than soil PE. Higher incubation temperature reduced net C sequestration by increasing SOC and plant-derived C decomposition. Longer incubation time increased net C sequestration by reducing the decomposition of SOC and plant-derived C decomposition. Conclusions These results are beneficial for understanding the response of soil net C sequestration to global N deposition, and could improve the prediction of terrestrial ecosystems C balance under global climate changes.

show abstract

Soil Organic Carbon Accumulation and Stability Under Rice Straw, Ash, and Biochar Amendment in Saline‐Alkali Soil

Jiang,

Zhu,

Han

et al. 2024

Land Degrad Dev

View full text Add to dashboard Cite

Salinization and alkalization contribute significantly to soil degradation. Rice (Oryza sativa L.) cultivation is an effective approach to remediate saline‐alkali soil. However, how rice straw (RS), rice straw biochar (RSB), and rice straw ash (RSA) impact soil organic carbon (SOC) accumulation and stability in saline‐alkali soil remains unknown. Herein, SOC and SOC fractions contents in bulk soil and its particle‐ and aggregate‐size classes under RS, RSB, and RSA amendments and control with amendments (CK) were investigated by field experiment. Carbon‐13 nuclear magnetic resonance spectroscopy was used to evaluate bulk SOC chemical composition. The SOC and SOC fractions contents ranked as CK<RSA<RS<RSB. Aromatic C was higher whereas O‐alkyl C was lower in RSB relative to other treatments. The contents of SOC and SOC fractions in bulk soil were generally positively correlated with those in particle‐ and aggregate‐size classes as well as with aromatic C. Redundancy analysis showed that exchangeable sodium and electrical conductivity were the most significant factors in shaping SOC contents and chemical composition. The results indicated that RSB is more beneficial for SOC accumulation and stabilization as compared to RS and RSA. The primary mechanisms of SOC accumulation in RSB‐amended soil included physical protection afforded by aggregate classes, chemical protection mediated by silt and clay fractions, and biochemical protection with recalcitrant aromatic C. Our findings suggest that converting RS into RSB and the subsequent application of this biochar have the potential for improving soil quality in saline‐alkali paddy field.

show abstract

Rice Straw Biochar is More Beneficial to Soil Organic Carbon Accumulation and Stabilization than Rice Straw and Rice Straw Ash

Cited by 5 publications

References 51 publications

Alterations of bacterial community related C cycle by affecting soil carbon fractions under aged biochar application

Alterations of bacterial community related C cycle by affecting soil carbon fractions under aged biochar application

Globally nitrogen deposition decreased net carbon sequestration in terrestrial ecosystems by increasing plant-derived carbon decomposition rather than soil priming effects: A meta-analysis

Soil Organic Carbon Accumulation and Stability Under Rice Straw, Ash, and Biochar Amendment in Saline‐Alkali Soil

Contact Info

Product

Resources

About