왕겨 바이오차 연용시 배추 재배에서 온실가스 배출 및 토양 탄소 수지에 미치는 영향 평가

• Published in: Hanguk hwangyeong nonghak hoeji Vol. 43; no. 43; pp. 117 - 127
• Main Authors: 박도균, Do-gyun Park, 김혜원, Hye-won Kim, 이형석, Hyoung-seok Lee, 이민지, Min-ji Lee, 박혜란, Hye-ran Park, 오택근, Taek-keun Oh, 이선일, Sun-il Lee
• Format: Journal Article
• Language: Korean
• Published: 한국환경농학회 01.04.2024
• Subjects: Greenhouse gas emissions; Kimchi cabbage cultivation; Net ecosystem carbon balance; Rice hull biochar; Total GWP; 농학; Kimchi cabbage cultivation; Net ecosystem carbon balance; Rice hull biochar; Greenhouse gas emissions; Total GWP
• ISSN: 1225-3537; 2233-4173
• DOI: 10.5338/KJEA.2024.43.12

Biochar is increasingly recognized as a sustainable practice to enhance soil carbon balance and reduce greenhouse gas emissions. Produced through the pyrolysis of biomass in limited oxygen, biochar has shown promise in agriculture. However, its effects on the Net Ecosystem Carbon Balance (NECB), Total Global Warming Potential (GWP), and Net GWP, especially during autumn and spring Kimchi cabbage growing seasons, require further research. This study investigates the impact of rice hull biochar on NECB, CO 2 , and N 2 O emissions during these seasons. The Biochar application rates were control=0 ton/ha, B1=1 ton/ha, B3=3 ton/ha, and B5=5 ton/ha. In autumn, Total GWP, including CO 2 emissions, ranged from 3.55 to 3.93 t/ha, showing no significant impact from increased biochar application. However, Net GWP decreased substantially with higher biochar inputs, ranging from -6.84 t/ha in the control to -16.59 t/ha in the B5 treatment, indicating enhanced carbon sequestration. During spring, Total GWP increased slightly with more biochar, from 1.63 to 1.97 t/ha, but Net GWP consistently decreased, from -8.80 to -18.74 t/ha. These results suggest that while Total GWP varies seasonally, biochar improves NECB and reduces Net GWP, highlighting its potential for mitigating climate change through sustainable agricultural practices.