N2O and CH4 emission from soil amended with steam-activated biochar

作者：Fungo Bernard^*; Guerena David; Thiongo Margaret; Lehmann Johannes; Neufeldt Henry; Kalbitz Karsten

来源：Journal of Plant Nutrition and Soil Science, 2014, 177(1): 34-38.

DOI：10.1002/jpln.201300495

• greenhouse gasses
• tropical soil
• biochar
• steam activation
• feedstock
• temperature

Steam-activation increased CH4 emission of stover biochar but decreased it for wood biochar by 14%(-)70%. Biochar generally increased CH4 emission but reduced N2O emission by 10%-41%. Emission of N2O was 17% lower for maize-stover biochar compared to Eucalyptus-wood biochar, and 3% lower for 350 degrees C compared to 550 degrees C pyrolysis temperature. Emission of CH4 was 21% higher for activated stover biochar compared to Eucalyptus-wood biochar and 10% lower for 350 degrees C compared to 550 degrees C pyrolysis temperature. No difference in net CO2 equivalent was observed among biochar grades.

• 出版日期2014-2