Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Geographical Shift in Blooming Date of Kiwifruits in Jeju Island by Global Warming

지구온난화에 따른 제주도 내 참다래 개화일의 지리적 이동

  • Kwon, Young-Soon (Department of Ecosystem Engineering, Kyung Hee University) ;
  • Kim, Soo-Ock (Department of Ecosystem Engineering, Kyung Hee University) ;
  • Seo, Hyeong-Ho (National Institute of Horticultural and Herbal Sciences, Rural Development Administration) ;
  • Moon, Kyung-Hwan (National Institute of Horticultural and Herbal Sciences, Rural Development Administration) ;
  • Yun, Jin I. (Department of Ecosystem Engineering, Kyung Hee University)
  • 권영순 (경희대학교 생태시스템공학과) ;
  • 김수옥 (경희대학교 생태시스템공학과) ;
  • 서형호 (농촌진흥청 국립원예특작과학원) ;
  • 문경환 (농촌진흥청 국립원예특작과학원) ;
  • 윤진일 (경희대학교 생태시스템공학과)
  • Received : 2011.07.01
  • Accepted : 2012.11.14
  • Published : 2012.12.30
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Abstract

A kiwifruit cultivar 'Hayward' has been grown in Jeju Island where the current climate is suitable for growth and development of this crop. Prediction of the geographical shift in the phenology can help the kiwifruits growers to adapt to the local climate change in the future. Two phenology models (i.e., chill-day and DVS) were parameterized to estimate flowering date of kiwifruits 'Hayward' based on the data collected from field plots and chamber experiments in the southern coastal and island locations in South Korea. Spatio-temporally independent datasets were used to evaluate performance of the two models in predicting flowering date of 'Hayward'. Chill-day model showed better performance than DVS model (2.5 vs. 4.0 days in RMSE). Daily temperature data interpolated at a higher spatial resolution over Jeju Island were used to predict flowering dates of 'Hayward' in 2021-2100 under the A1B scenario. According to the model calculation under the future climate condition, the flowering of kiwifruits shall accelerate and the area with poor flowering might increase due to the warmer winter induced insufficient chilling. Optimal land area for growing 'Hayward' could increase for a while in the near future (2021-2030), whereas such areas could decrease to one half of the current areas by 2100. The geographic locations suitable for 'Hayward' cultivation would migrate from the current coastal area to the elevated mountain area by 250 m.

제주도의 새로운 소득 과수인 참다래 '헤이워드'를 대상으로 IPCC의 미래 시나리오 기후조건에서 개화기 분포를 정밀하게 추정함으로써 도내 재배적지의 지리적 이동을 가시화 하였다. 개화기 예측을 위해 휴면시계모형과 발육속도모형을 각각 '헤이워드' 품종에 맞도록 조정하였으며, 시공간적으로 독립적인 자료(해남 2006-2009, 제주 2010-2011)에 의해 검증한 결과 개화일 추정오차는 RMSE = 2.5일(휴면시계모형)과 4.0일(발육속도모형)로 나타났다. 제주도의 현재평년(1981-2010) 기온 및 A1B 시나리오에 따른 10년 단위 미래 기온을 종관기상자료와 공간기후추정기술에 의해 상세 격자형 분포도로 제작하였다. 일별 기온분포도를 이용하여 휴면시계모형을 구동시켰으며 그 결과를 30m 해상도의 상세 개화일분포도로 가시화 하였다. 이 모의결과에 따르면 미래로 갈수록 현재평년에 비해 개화일이 앞당겨지는 한편, 저온요구도의 부족으로 개화불량인 지역이 늘어날 것으로 추정된다. 개화기에 근거한 재배적지의 면적은 가까운 미래에는 증가하지만 먼 미래로 갈수록 급격히 줄어들어 21세기 말에는 현재의 절반이 될 것이며, 같은 기간 재배적지는 해안지대로부터 해발 250m 정도 한라산 방향으로 이동할 것으로 예측된다.

Keywords

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