Journal of the Korean Institute of Landscape Architecture (한국조경학회지)

The Korean Institute of Landscape Architecture (한국조경학회)
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Cold Tolerance Assessment of Ever Ground-cover Plants for Extensive Green Roof System

저관리형 옥상녹화를 위한 상록 지피식물의 내한성 평가

  • Zhao, Hong-Xia (Dept. of Landscape Architecture, Graduate School, Dongguk University) ;
  • Li, Hong (Dept. of Landscape Architecture, Graduate School, Dongguk University) ;
  • Son, Hee-Jun (Dept. of Landscape Architecture, Graduate School, Dongguk University) ;
  • Kang, Tai-Ho (Dept. of Landscape Architecture, Dongguk University)
  • 조홍하 (동국대학교 대학원 조경학과) ;
  • 이홍 (동국대학교 대학원 조경학과) ;
  • 손희준 (동국대학교 대학원 조경학과) ;
  • 강태호 (동국대학교 조경학과)
  • Received : 2012.06.12
  • Accepted : 2012.08.13
  • Published : 2012.08.31
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Abstract

This study was carried out to suggest an experimental base in selecting the cold tolerance of plants. The cold tolerance of the plants were subject to laboratory low temperature treatments and cold processing time were evaluated using both electrolyte leakage and regrowth test. The Logistic model of nonlinear regression analysis was used to evaluate the lethal temperatures that were predicted with the range of $-16.1{\sim}-24.4^{\circ}C$. The order of low-temperature resistance was Sedum reflexum > S. spurium > Ophiopogon japonicus > S. album > S. takevimense > Dianthus chinensis. At the lowest temperature of $13.4^{\circ}C$ the electrolyte leakage value of the plants were lower than 50% demonstrating that they could be applied stably to the roof installed in Korea during the winter with the lowest temperature of $-13.5^{\circ}C$.

이 연구는 저관리 경량형 옥상녹화시스템을 위한 내한성 식물 선발을 목적으로 6종 식물을 대상으로 저온 처리시간과 온도에 따라 전해질 용출 평가와 재생 검사를 연구하였다. Logistic 비선형 회귀분석을 이용하여 전해질 용출 평가를 통하여 치사 온도는 $-16.1{\sim}-24.4^{\circ}C$ 범위로 예측되었으며, 저온에 대한 저항성은 Sedum reflexum > S. spurium > Ophiopogon japonicus > S. album > S. takevimense > Dianthus chinensis의 순으로 나타났다. 2012년 2월 최저 온도인 $-13.4^{\circ}C$에 모든 식물의 전해질 용출은 50% 이하로 나타났으며, 겨울철 최적기온 $-13.5^{\circ}C$ 이상의 지역에서 식물들을 옥상에서 안정적으로 생육될 수 있을 것으로 예측되었다.

Keywords

References

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  1. Cold Tolerance of Ground Cover Plants for Use as Green Roofs and Walls vol.32, pp.5, 2014, https://doi.org/10.7235/hort.2014.14035