Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Development of Korean SPAR(Soil-Plant-Atmosphere-Research) System for Impact Assessment of Climate Changes and Environmental Stress

기후변화 및 환경스트레스 영향평가를 위한 한국형 SPAR(Soil-Plant-Atmosphere-Research) 시스템의 개발

  • Sang, Wan-Gyu (National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Jun-Hwan (National Institute of Crop Science, Rural Development Administration) ;
  • Shin, Pyong (National Institute of Crop Science, Rural Development Administration) ;
  • Baek, Jae-Kyeong (National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Yun-Ho (National Institute of Crop Science, Rural Development Administration) ;
  • Cho, Jung-Il (National Institute of Crop Science, Rural Development Administration) ;
  • Seo, Myung-Chul (National Institute of Crop Science, Rural Development Administration)
  • 상완규 (농촌진흥청 국립식량과학원) ;
  • 김준환 (농촌진흥청 국립식량과학원) ;
  • 신평 (농촌진흥청 국립식량과학원) ;
  • 백재경 (농촌진흥청 국립식량과학원) ;
  • 이윤호 (농촌진흥청 국립식량과학원) ;
  • 조정일 (농촌진흥청 국립식량과학원) ;
  • 서명철 (농촌진흥청 국립식량과학원)
  • Received : 2019.08.27
  • Accepted : 2019.09.19
  • Published : 2019.09.30
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Abstract

The needs for precise diagnostics and farm management-decision aids have increased to reduce the risk of climate change and environmental stress. Crop simulation models have been widely used to search optimal solutions for effective cultural practices. However, limited knowledge on physiological responses to environmental variation would make it challenging to apply crop simulation models to a wide range of studies. Advanced research facilities would help investigation of plant response to the environment. In the present study, the sunlit controlled environment chambers, known as Korean SPAR (Soil-Plant-Atmosphere-Research) system, was developed by renovating existing SPAR system. The Korean SPAR system controls and monitors major environmental variables including atmospheric carbon dioxide concentration, temperature and soil moisture. Furthermore, plants are allowed to grow under natural sunlight. Key physiological and physical data such as canopy photosynthesis and respiration, canopy water and nutrient use over the whole growth period are also collected automatically. As a case study, it was shown that the Korean SPAR system would be useful for collection of data needed for understanding the growth and developmental processes of a crop, e.g., soybean. In addition, we have demonstrated that the canopy photosynthetic data of the Korean SPAR indicate the precise representation of physiological responses to environment variation. As a result, physical and physiological data obtained from the Korean SPAR are expected to be useful for development of an advanced crop simulation model minimizing errors and confounding factors that usually occur in field experiments.

기후변화에 따른 환경 스트레스 대응 기술과 영농의사결정 플랫폼 개발을 위해서는 환경 조건에 따른 작물의 반응을 이해하기 위한 시스템 개발이 매우 중요하다. 본 연구는 한국형 SPAR 시스템이 다양한 환경 조건에서 작물 생육 반응을 어떻게 정량화하고, 향후 작물 생육 모형 개발에 어떻게 연계될 수 있는지에 대해 방향을 제시하고자 수행되었다. 한국형 SPAR 시스템은 온도, $CO_2$ 농도 등의 기상요소와 양 수분 관리 등 재배요소를 동시에 정밀 조절할 수 있을 뿐 만 아니라 군락수준에서 광합성 및 호흡 등 작물의 생육 반응을 실시간으로 정량화하기에 최적화되어 있다. 본 시스템을 통해 수집된 군락 광합성 정보는 실제 작물의 환경조건에 따른 생육량 변동을 매우 유의하게 반영하여 향후 작물 생육 모형에 실질적으로 적용 가능한 환경-유전 요인간 특이적 반응 함수 개발에 크게 활용될 것으로 기대된다.

Keywords

References

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