Biochar and Straw Amendments over a Decade Divergently Alter Soil Organic Carbon Accumulation Pathways
Kunjia Lei,
Wenxia Dai,
Jing Wang
et al.
Abstract:Exogenous organic carbon (C) inputs and their subsequent microbial and mineral transformation affect the accumulation process of soil organic C (SOC) pool. Nevertheless, knowledge gaps exist on how different long-term forms of crop straw incorporation (direct straw return or pyrolyzed to biochar) modifies SOC composition and stabilization. This study investigated, in a 13-year long-term field experiment, the functional fractions and composition of SOC and the protection of organic C by iron (Fe) oxide minerals… Show more
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