Applying biochar under topsoil facilitates soil carbon sequestration: A case study in a dryland agricultural system on the Loess Plateau

• Published in: Geoderma Vol. 403; p. 115186
• Main Authors: Li, Shuailin, Ma, Qiang, Zhou, Changrui, Yu, Wantai, Shangguan, Zhouping
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2021
• Subjects: biochar; Biochar application depth; carbon dioxide; carbon sequestration; case studies; China; dryland farming; edaphic factors; field experimentation; labile carbon; Metabolic quotient (qCO2); methane; Methane uptake; microbial biomass; pollution control; Soil respiration; subsurface soil layers; temperature; Temperature sensitivity (Q10); topsoil; upland soils; China; Metabolic quotient (qCO2); Methane uptake; Soil respiration; Biochar application depth; Temperature sensitivity (Q10)

•The effect of biochar application depth on soil CO2 and CH4 fluxes was examined.•Soil respiration and CH4 uptake highly depend on the soil environment at 0–10 cm.•Biochar incorporation into the 10–20 cm depth promoted soil C sequestration. The remarkable soil carbon sequestration and greenhouse gas...