Biochar application to agricultural soils has high carbon sequestration potential, with higher increases in medium to fine grain textured soils and higher C/N ratios compared to coarse grain textured soils.

Soil Organic Carbon Sequestration after Biochar Application: A Global Meta-Analysis

Biochar may be more efficient for sequestering soil carbon than crop residues, but may not be more cost-effective.

The impact of biochar on soil carbon sequestration: Meta-analytical approach to evaluating environmental and economic advantages.

Biochar amendment enhances soil organic carbon content by 40% and microbial biomass carbon by 18%, with variations in soil properties, land-use type, agricultural practices, and biochar characteristics.

Response of soil carbon dioxide fluxes, soil organic carbon and microbial biomass carbon to biochar amendment: a meta‐analysis

Biochar application significantly increases soil microbial biomass and enzyme activities, potentially improving soil quality and crop productivity without negative effects on enzymes.

Biochar increases soil microbial biomass with changes in extra- and intracellular enzyme activities: a global meta-analysis

Biochar application increases soil CO2 fluxes but decreases N2O fluxes, potentially contributing to increased global warming potential, but suppresses CO2 fluxes in fertilized soils.

Effects of biochar application on soil greenhouse gas fluxes: a meta‐analysis

Biochar application in acidic soils reduces its carbon sequestration potential, potentially overestimating its potential in China due to its widespread use.

Reduced carbon sequestration potential of biochar in acidic soil.

Biochar can improve soil fertility and carbon sequestration, but high pyrolytic temperatures may negatively impact nutrient availability.

Potential Role of Biochar on Capturing Soil Nutrients, Carbon Sequestration and Managing Environmental Challenges: A Review

Biochar shows promise for carbon sequestration in soil, but requires improved standards, long-term field studies, and comprehensive assessments to accurately reflect its benefits.

Carbon Sequestration Strategies in Soil Using Biochar: Advances, Challenges, and Opportunities.

Biochar produced from crop residues has potential for carbon sequestration and soil amendment, with variations in carbon content, pH, and nutrient content, but overall has a high carbon sequestration potential.

Characteristics of biochars from crop residues: potential for carbon sequestration and soil amendment.

Biochar application improves soil health, nutrient use efficiency, and crop productivity, but may negatively impact microbial biomass and activity.

Biochar and Its Broad Impacts in Soil Quality and Fertility, Nutrient Leaching and Crop Productivity: A Review

Biochar application in temperate soils may improve plant productivity, soil structure, and microbial communities, but more research is needed to confirm its potential as a long-term carbon sequestration site.

Potential mechanisms for achieving agricultural benefits from biochar application to temperate soils: a review

Aged biochar particles in the soil have improved mechanical properties and reduced CO2 and N2O emissions, potentially enhancing soil carbon sequestration and greenhouse gas emission reduction.

Effects of biochar aging in the soil on its mechanical property and performance for soil CO2 and N2O emissions.

Biochar can improve crop productivity and reduce greenhouse gas emissions, but long-term effects on soil health and weed control require further investigation.

Biochar for crop production: potential benefits and risks

Soil carbon sequestration and biochar have useful negative emission potential and have fewer disadvantages compared to other negative emissions technologies, making them potential climate stabilization solutions.

Soil carbon sequestration and biochar as negative emission technologies

Biochar offers potential benefits for carbon sequestration, greenhouse gas emissions, and soil improvement, but future research should focus on its long-term effects on biological organisms and their processes in the soil.

Agronomic and remedial benefits and risks of applying biochar to soil: Current knowledge and future research directions.

Biochar addition increases soil carbon sequestration, but high temporal variability limits its potential for carbon sequestration, making middle and low rates (1.8-3.6 Mg ha1 yr) cost-effective options in the North China Plain.

Temperature and moisture driven changes in soil carbon sequestration and mineralization under biochar addition

Biochar shows potential in contaminant management in soil and water, with its effectiveness depending on its surface area, pore size distribution, and ion-exchange capacity.

Biochar as a sorbent for contaminant management in soil and water: a review.

Biochar application in soil alters microbial communities and CO2 emission potential, with soil pH being the dominant factor affecting CO2 emission by increasing organic carbon bioavailability and abundance of copiotrophic bacteria in ferralsol soils and decreasing oligotrophic bacteria abundance in phaeozems.

Biochar alters microbial community and carbon sequestration potential across different soil pH.

Biochar shows promise for soil carbon sequestration through its recalcitrant nature and ability to promote stable aggregates and influence soil microorganisms.

Biochar for Soil Carbon Sequestration: Current Knowledge, Mechanisms, and Future Perspectives

Biochar implementation in agriculture can sequester over 920 kg CO2e per t of crop residues, with significant potential in China's central south, east, and northeast regions, and contribute to environmental benefits.

Country-level potential of carbon sequestration and environmental benefits by utilizing crop residues for biochar implementation

What is the potential of biochar in soil enhancement and carbon sequestration?

Some studies suggest biochar enhances soil organic carbon, microbial biomass, and enzyme activities, while other studies indicate it may increase soil CO2 fluxes and have variable effects depending on soil type, land-use, and biochar characteristics.