Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Blooming Time of Tilia amurensis Rupr. in Mountainous Area and Prediction of its Blooming Progress Using Growing Degree Day Model

산악 지역에서의 피나무(Tilia amurensis Rupr.) 개화시기와 성장온일도를 이용한 개화 진행 예측

  • Kim, Min-Jung (Agricultural Science and Technology Research Institute, Andong National University) ;
  • Son, Minwong (Department of Plant Medicals, Andong National University) ;
  • Lee, Juhyeok (Department of Plant Medicals, Andong National University) ;
  • Jung, Chuleui (Agricultural Science and Technology Research Institute, Andong National University)
  • 김민중 (안동대학교 농업과학기술연구소) ;
  • 손민웅 (안동대학교 식물의학과) ;
  • 이주혁 (안동대학교 식물의학과) ;
  • 정철의 (안동대학교 농업과학기술연구소)
  • Received : 2021.11.09
  • Accepted : 2022.02.25
  • Published : 2022.03.30
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Abstract

Tilia amurensis is an important honey plant. As T. amurensis mainly distributes mountainous area with various elevations in Korea, accurate prediction of blooming time at the different elevation would benefit forest beekeepers. In this study, we measured time-dependent blooming progress of T. amurensis in Mt. Gariwang area ranging from 500-1500m. Additionally we collected blooming data from web and published literatures and estimated the variation of blooming time relative to the geographic locations. Flowers began to bloom from July 6 to July 22 with full blooming on July 14 in location where elevation is 638m in Mt. G ariwang area in 2021. Based on these databases, a growing degree day (G DD) model was developed for prediction of T. amurensis blooming progress using average daily temperatures. Using the starting date of G DD accumulation of January 1 and base temperature of 5 ℃, blooming period ranging from 10% to 90% of cumulative blooming rate was estimated as 860-1198 degree days (DD). This corresponded to the beginning to the end of July in Mt. Gariwaning area in 2021. This model could explain the phenological variations of T. amurensis flower blooming possibly affected by elevation within geographic area, latitude or year relative to the climate change, and aid forest beekeepers for better timing of nectar foraging by honey bees.

본 연구는 국내 중요 밀원식물인 피나무가 주로 자생하는 산악 지역에서 개화시기를 예측하기 위해 수행되었다. 이를 위해 가리왕산 일대 해발 638m 지점 기준목에서 개화 진행을 모니터링 하고, 고도별 개화율을 관찰하였다. 또한 문헌자료, 웹자료, 개화 판별이 가능한 표본자료들을 수집하였다. 이 자료들을 이용하여 고도와 위도에 따른 개화기 변화를 확인하였다. 또한 누적 GDD를 이용하여 누적 개화율 모델을 개발하였다. GDD 계산은 5 ℃의 기준온도와 일별 최고, 최저 온도를 이용하였다. 일일 온일도를 1월 1일부터 누적할 경우 피나무 개화기는 860~1198 DD로 추정되었다. 이 결과는 산림양봉이 이루어지는 산악지역에서 개화기 예측과 채밀 가능기간을 추정에 도움을 줄 수 있을 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 산림청(한국임업진흥원) 산림과학기술연구개발사업'(2021362E10-2223-BD01)'의 지원에 의하여 이루어진 것입니다. 조사를 도와주신 자연정원 권박사님께 감사드립니다.

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