바이오차의 농경지 토양 탄소 증진 및 온실가스 감축 효과 = Enhanced Soil Carbon Sequestration and Reduced Green House Gas Emission in Cropland Soils by Biochar Application

다국어 초록 (Multilingual Abstract)

Biochar is a carbon-rich solid material converted from agricultural biomass pyrolysis under limited oxygen supply. Due to the recalcitrant C of biochar, biochar application to the soils is of help in enhancing soil organic carbon (SOC) sequestration in croplands that might be a strategy of agricultural sector to mitigate climate change. This study include four topics: 1) literature review on the effect of biochar application on crop productivity and greenhouse gas emission as well as SOC content in East Asian countries, 2) the pattern of greenhouse gas emissions by application of different biochar, 3) SOC sequestration potential of soybean upland soil applied with soybean stalk biochar, and 4) the greenhouse gas emission and SOC storage in orchard soils amended with biochar produced from pruning branch using the pyrolyzer. SOC content increased with increasing the application rates of biochar. Nitrous oxide (N₂O) reduction was correlated with biochar application rate. The results of these studies suggest the potential use of biochar as a measures of low-C agricultural practices by providing evidences on the reduced greenhouse gases emission and increased SOC content by biochar application.