지중저장 이산화탄소의 잠재적 누출 모사에 따른 옥수수 초기 반응 및 생장 연구 (Corn Growth and Development influenced by Potential CO2 Leakage from Carbon Capture and Storage (CCS) Site)

서지정보

· 발행기관 : 한국기후변화학회
· 수록지 정보 : 한국기후변화학회지 / 8권 / 3호 / 257 ~ 264페이지
· 저자명 : 김유진, 첸쉔린, 허웬메이, 유가영

초록

Carbon capture and storage (CCS) technology has been suggested as an ultimate strategy for mitigating climate change. However, potential leakage of CO2 from the CCS facilities could lead to serious damage to environment. Plants can be a bio-indicator for CO2 leakage as a cost-effective way, although plants’ responses vary with plant species. In this study, a greenhouse experiment was conducted to investigate the relation between the CO2 tolerance of corn species and the initial physiological responses to the elevated soil CO2 concentration. Treatment groups included CI (99.99% CO2 gas injection) and BI (no gas injection). Mean soil CO2 concentration for the CI treatment was 19.5∼39.4%, and mean O2 concentration was 6.6∼18.4%. The soil gas concentrations in the BI treatment were at the ambient levels. In the CI treatment, chlorophyll content was not decreased until the 13th day of the CO2 injection. On the 15th day, leaf starch content and stomatal conductance were increased by 89% and 25% in the CI treatment compared to the BI treatment, respectively. This might be due to the compensatory reaction of corn to avoid high soil CO2 stress. However, the prolonged CO2 injection decreased chlorophyll content after 13 days. After CO2 injection, plant biomass was reduced by 25% in the CI treatment compared to the BI treatment. Due to the inhibited root growth, leaf phosphorous and potassium contents were decreased by 54% on average in the CI treatment. This study indicates that corn has a high tolerance to soil CO2 concentration of 30% for 2 weeks by its compensatory reactions such as an maintenance of chlorophyll content and an increase in stomatal conductance.

영어초록

Carbon capture and storage (CCS) technology has been suggested as an ultimate strategy for mitigating climate change. However, potential leakage of CO2 from the CCS facilities could lead to serious damage to environment. Plants can be a bio-indicator for CO2 leakage as a cost-effective way, although plants’ responses vary with plant species. In this study, a greenhouse experiment was conducted to investigate the relation between the CO2 tolerance of corn species and the initial physiological responses to the elevated soil CO2 concentration. Treatment groups included CI (99.99% CO2 gas injection) and BI (no gas injection). Mean soil CO2 concentration for the CI treatment was 19.5∼39.4%, and mean O2 concentration was 6.6∼18.4%. The soil gas concentrations in the BI treatment were at the ambient levels. In the CI treatment, chlorophyll content was not decreased until the 13th day of the CO2 injection. On the 15th day, leaf starch content and stomatal conductance were increased by 89% and 25% in the CI treatment compared to the BI treatment, respectively. This might be due to the compensatory reaction of corn to avoid high soil CO2 stress. However, the prolonged CO2 injection decreased chlorophyll content after 13 days. After CO2 injection, plant biomass was reduced by 25% in the CI treatment compared to the BI treatment. Due to the inhibited root growth, leaf phosphorous and potassium contents were decreased by 54% on average in the CI treatment. This study indicates that corn has a high tolerance to soil CO2 concentration of 30% for 2 weeks by its compensatory reactions such as an maintenance of chlorophyll content and an increase in stomatal conductance.

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