Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
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Changes of Flowering Time Affected by Climate Change in the Subalpine Region of Mt. Gaya

기후변화에 따른 가야산 아고산지역 식물의 개화시기 변화

  • Sung, Jung Won (The Korea National Arboretum of Baekdudaegan) ;
  • Kim, Keun Ho (Department of Forest Resources and Landscape Architecture, College of Life and Applied Sciences, Yeungnam University)
  • 성정원 (국립백두대간수목원) ;
  • 김근호 (영남대학교 산림자원 및 조경학과)
  • Received : 2017.09.01
  • Accepted : 2017.12.15
  • Published : 2018.02.28
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Abstract

Global warming and climatic change have caused severe environmental problems and threatened subalpine plants. Identification of life cycles and construction of database on temperature and humidity would be useful for conservation strategies of subalpine plants. The aim of this study was to analyze flowering time and period of the five plants; Lilium cernuum Kom, Primula modesta var. fauriae, Trientalis europaea, Ligusticum tachiroei and Streptopus ovalis for bioclimatic research of subalpine region. These plants were naturally growing at the subalpine region of Mt. Gaya. For this study, we analyzed temperature and humidity of the study areas based on flowering time for 5 years. The result of reliability analysis showed a higher Cronbach Alpha value of 0.741. The result indicated that Lilium cernuum Kom. boomed on July 23rd(SD=6.5), Primula modesta var. fauriae on May 8th(SD=8.7), Trientalis europaea. on June 1st(SD=2.8), Ligusticum tachiroei on August 16th(SD=4.3) and Streptopus ovalis on May 22nd(SD=5.1). The correlation of flowering period with meteorological elements was positives (+) and correlation coefficient of daily maximum temperature(0.711) and daily average temperature(0.613) was relatively higher in flowering period. The research presented here is a first step to develop a conservation strategy for subalpine plants. The study only analyzed meteorological elements for flowering time and period of subalpine plants. Therefore, further researches on a more comprehensive analysis of subalpine species are needed.

지구온난화와 기후변화는 많은 환경문제를 야기하였고 특히 아고산식물의 생존을 위협하고 있다. 아고산식물종의 생활사 파악과 온 습도의 자료 구축은 아고산식물종의 보전전략 수립에 매우 유용할 것이다. 본 연구의 목적은 가야산국립공원의 아고산지대에 자생하는 솔나리, 설앵초, 기생꽃, 개회향 및 금강애기나리 등 5종을 대상으로 2012년부터 2016년까지 5년간 개화, 낙화시기 모니터링 조사와 및 온 습도변화는 개화, 낙화시작시기를 기준으로 각각 20일간 조사하여 개화와 온 습도 간 상관관계를 분석하였다. 이를 통해 아고산지역의 생물기후학적 연구를 위한 기초자료를 제공하고자 한다. 변수들에 대한 신뢰도 검정결과, Cronbach Alpha 값은 0.741로 신뢰성이 높았다. 각 식물종의 개화시기 분석결과 솔나리 평균 7월 23일(SD=6.5), 설앵초 평균 5월 8일(SD=8.7), 기생꽃 평균 6월 1일(SD=2.8), 개회향 평균 8월 16일(SD=4.3) 및 금강애기나리 평균 5월 22일(SD=5.1)로 나타났다. 개화기간은 기상요소 간의 상관관계에서 모두 정(+)의 관계를 보였으며, 일최고온도와 일평균온도의 상관계수가 각각 0.711, 0.613로 상대적으로 높게 나타났다. 한편, 식물종의 생활사를 파악하기에 기상자료만으로 분석하였으나 해발고도에 따른 상관성을 비롯하여, 사면, 향 및 미기후 등 다양한 환경요인을 종합적으로 분석하지 못한 한계점을 지니고 있어 향후 아고산지역 식물종을 모니터링 할 때 기초자료를 더욱 축적해 나갈 필요성이 있다.

Keywords

Acknowledgement

Supported by : 영남대학교

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