Effects of Biochar Application on Greenhouse Gas (CH4 and N2O) Emission: A Review

doi:10.11924/j.issn.1000-6850.casb17070033

Abstract

Abstract: 【Objectives】Paddy field is one of the important sources of greenhouse gas (GHG) emissions. Reducing GHG emissions from paddy field is of great significance for mitigating global climate changes. Biochar has the characteristics of high carbon content, difficult decomposition, large specific surface area, highly porous structure and considerable recalcitrancy. Biochar could effectively improve soil properties and microbial properties, reduce the emission of CH4 and N2O, and increase rice yield. 【Method】Based on current research, the characteristics of biochar, the mechanism of biochar affecting GHG emissions from paddy field, effects of CH4 and N2O emissions, global warming potential (GWP), greenhouse gas emissions intensity (GHGI), the net ecosystem economic budget (NEEB) at home and abroad were comprehensively reviewed by combining with the latest research progress. 【Result】The future prospects about the mitigation of biochar on GHG emissions from paddy field were also discussed.

CLC Number:

S147.3

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