Current Research Works on Climate Change Issue using SPAR (Soil-Plant-Atmosphere-Research) System in USDA-ARS
2017
Sang, W.G., NICS, RDA, Wanju, Republic of Korea | Kim, J.H., NICS, RDA, Wanju, Republic of Korea | Shin, P., NICS, RDA, Wanju, Republic of Korea | Cho, H.S., NICS, RDA, Wanju, Republic of Korea | Seo, M.C., NICS, RDA, Wanju, Republic of Korea | Lee, G.H., NICS, RDA, Wanju, Republic of Korea
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.
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