Greenhouse Gas Emissions according to Application of Biochar by Soil Type in the Closed Chamber

Recently, biochar-related research using agricultural by-products has been actively conducted as part of aresponse to climate change. However, the effect research of reducing greenhouse gas emissions by the applicationof biochar by soil type in Korea is still insufficient. Thus, the purpose of this study was to evaluate thegreenhouse gas reduction effect according to the application level of biochar by soil type. Closed chamberexperiments were carried out for 42 days. The closed chamber experiment was performed by applying a differentinput amount biochar (0, 5, 10 and 20 ton ha-1) by four soil types (upland soil, greenhouse soil, converted soil,reclaimed soil). The cumulative carbon dioxide (CO2) emission decreased by 21.1 - 25.7% on average ingreenhouse soil, converted soil, and reclaimed soil, but there was no significant difference. It was analyzedthat the cumulative nitric oxide (N2O) emission decreased significantly by 43.7 - 72.1% on average comparedto the control group. All four soil types were analyzed to have low N2O emissions in the treatment chamber towhich 20 ton ha-1 of biochar was applied. Long-term monitoring studies related biochar that can suppressnitrous oxide emissions and increase crop production are considered to needed for sustainable agriculture. KCI Citation Count: 1