논문 상세보기
pp.382-388
Climate change may result in increases in air temperature and shifts in precipitation patterns as the result of increases in atmospheric CO2. Outdoor, naturally sunlit, plant growth chambers referred to as SPAR (Soil Plant Atmosphere Research) chambers are one of the important research facilities under controlled conditions. SPAR provide precise control of the major environmental variables influencing crop growth including temperature, humidity and atmospheric CO2 concentration. Especially the SPAR system is considered as the most realistic approach for studying crop canopy gas exchange including photosynthesis, respiration, transpiration. Indeed, many reports have confirmed that gas exchange values in SPAR is highly associated with dry matter and yield. So SPAR data can be used to develop quantitative relationships and functions, which are then tested against field data. In ARS, the SPAR system is widely used for research on: (1)Response and adaptation of crops and weeds to elevated CO2 and global warming, (2)Developing analytical and management strategies to improve crop utilization and to reduce losses due to the environment, (3)Mechanistic process-level crop simulation models for assessment of agricultural systems.
2. SPAR의 주요 기능 및 원리
2.1. 광합성량 및 호흡량 산정을 위한 CO2 Flux 측정원리
2.2. 저온 응축기(Condensing system)를 이용한 군락증발산량 측정 원리
3. SPAR를 통해 수집 가능한 작물 생육 정보 분석
3.1 작물 군락 광합성 데이터 분석
3.2 증발산량 데이터 분석
4. SPAR를 활용한 ARS의 기후변화 연구 현황
4.1 기후변화(고온, 고CO2)조건에서 작물과 잡초의 생육영향 평가
4.2 기후변화 피해 경감을 위한 재배관리법 분석 및 개발
4.3 실제 미래기후에 적용 가능한 작물생육모형 개발
적 요
ACKNOWLEDGMENTS
REFERENCES
