Studies on the Growth Environment of Calanthe Species Native to Cheju Province

제주(濟州) 자생(自生) 새우난초의 생육환경(生育環境)

  • Hyun, Myung-Ryuk (Dept. of Horticulture, Cheju National University) ;
  • Choi, Ji-Yong (Dept. of Horticulture, Cheju National University) ;
  • Suh, Jung-Nam (Dept. of Horticulture, Cheju National University) ;
  • So, In-Sup (Dept. of Horticulture, Cheju National University) ;
  • Lee, Jong-Suk (Dept. of Hort. Sci., Seoul Women's University)
  • Published : 1999.08.31

Abstract

Natural habitats for Calanthe species were generally established in forests of deciduous broad-leaved trees. The habitat areas had lower summer temperatures, more precipitation, and harrow humidity ranging 75~90% throughout the year than adjacent non-habitat areas. The most influential factor on the habitat establishment was light intensity. The light levels in the habitats are cut down by tree canopies, which also reduce temperature before the defoliation in autumn. The most frequent distribution of the habitat was in the areas with light intensity of 400~1,500 lux under tree canopies and of 30,000~50,000 lux in winter after defoliation. Calanthe was characteristically distributed in the broad-leaved forests where high levels of light are reduced in summer, and cold temperatures in winter are insulated by mulched layers of fallen leaves.

새우난초의 자생지 생태환경은 낙엽활엽수림대로 비자생지보다 여름철 기온이 낮고 강수량이 많았으며, 상태습도가 연중 75~90%로 고른 분포를 보였다. 새우난초의 자생분포에 가장 중요한 영향을 끼치는 환경요인은 광(光)이었는데, 낙엽이 지기 전까지는 수관에 의해 강한 광선이 차단되었고, 자생지의 온도가 낮아졌으며, 광도가 400~1,500lux에서 가장 많은 분포를 보였다. 낙엽이 진 겨울철에는 30,000~50,000lux의 광이 유입되어 자생지의 온도를 높여 새우난초의 월동이 가능하였다. 새우난초는 낙엽활엽수림대에 자생하여 여름철에는 강한 광선의 차단효과를 얻었고, 겨울철에는 광선의 유입을 도모하고 낙엽으로 인한 피복으로 보온효과를 얻은 것으로 사료되었다.

Keywords

Acknowledgement

Supported by : Ministry of Education